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59571-88
POCKET COLORIMETER™ II
ANALYSIS SYSTEMS
INSTRUCTION MANUAL
Bromine (Br)
Chlorine Dioxide (ClO
)
2
Chlorine (Cl
) / pH
2
© Hach Company, 2004–2006. All rights reserved. Printed in the U.S.A.
te/dk 9/06 4ed

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Summary of Contents for Hach Pocket Colorimeter II

  • Page 1 59571-88 POCKET COLORIMETER™ II ANALYSIS SYSTEMS INSTRUCTION MANUAL Bromine (Br) Chlorine Dioxide (ClO Chlorine (Cl ) / pH © Hach Company, 2004–2006. All rights reserved. Printed in the U.S.A. te/dk 9/06 4ed...
  • Page 2 Important Note This manual is intended for use with the following Pocket Colorimeter™ II instruments: Bromine Cat. No. 59530-01 Chlorine Dioxide Cat. No. 59530-51 Chlorine / pH Cat. No. 59530-12 The Pocket Colorimeter™ II instruments listed above are not interchangeable. 1—2...

  • Page 3: Table Of Contents

    Table of Contents Safety Precautions ....................1—7 Laboratory Safety ....................1—7 Use of Hazard Information................1—7 Precautionary Labels..................1—8 Specifications ......................1—9 Instrument Keys and Display ................1—11 Instrument Cap Cord ..................1—12 Bromine, Total, LR ....................1—15 Measuring Hints ....................1—15 Sampling and Storage..................
  • Page 4 Table of Contents, continued Method Performance ..................1—35 Summary of Method..................1—35 Replacement Parts (LR and HR) ..............1—35 Chlorine, Free and Total, HR ................1—39 Measuring Hints ....................1—39 Accuracy Check....................1—44 Interferences ......................1—46 √ Spec Secondary Standards ................1—49 Method Performance ..................1—49 Summary of Method..................1—49 Replacement Parts.....................1—50 Chlorine Dioxide ....................1—53...
  • Page 5 Table of Contents, continued ..........................1—69 Measuring Hints ....................1—69 Accuracy Check ....................1—74 Method Performance..................1—74 Standard Calibration Adjust ................1—75 Summary of Method ..................1—75 Replacement Parts .................... 1—76 Instrument Operation ..................2—3 Key Functions ..................... 2—3 Menu Selections....................2—4 Switching Ranges ....................
  • Page 6 Table of Contents, continued User-Entered Calibration .................2—15 Overview ......................2—15 Calibration Procedure Using Prepared Standards.........2—17 Entering a Predetermined Calibration Curve..........2—20 Editing a User-entered or Factory Calibration Curve........2—22 Exiting the Calibration Routine ..............2—24 Deleting Calibration Points................2—24 Retrieving the Factory Calibration ..............2—25 Maximum/Minimum Displayed Value ............2—26 Certification ......................2—28 How to Order...

  • Page 7: Safety Precautions

    Safety Precautions Please read this entire manual before unpacking, setting up, or operating this instrument. Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. To ensure the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that which is specified in this manual.

  • Page 8: Precautionary Labels

    Safety Precautions, continued DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury. NOTE Information that requires special emphasis. Precautionary Labels Please pay particular attention to labels and tags attached to the instrument.

  • Page 9: Specifications

    Specifications Lamp: Light emitting diode (LED) Detector: Silicon photodiode Photometric precision: ± 0.0015 Abs Filter bandwidth: 15 nm Wavelength: 528 nm Absorbance range: 0–2.5 Abs Dimensions: 3.2 x 6.1 x 15.2 cm (1.25 x 2.4 x 6 inches) Weight: 0.2 kg (0.43 lb) ®...
  • Page 10 OPERATION DANGER Handling chemical samples, standards, and reagents can be dangerous. Review the necessary Material Safety Data Sheets and become familiar with all safety procedures before handling any chemicals. DANGER La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse. Lire les Fiches de Données de Sécurité...

  • Page 11: Instrument Keys And Display

    Instrument Keys and Display Item Description POWER/BACKLIGHT ZERO/SCROLL MENU Numeric Display Range Indicator Range Indicator Menu Indicator Calibration Adjusted Indicator Battery Low Indicator READ/ENTER 1—11...

  • Page 12: Instrument Cap Cord

    Instrument Cap Cord The instrument cap for the Pocket Colorimeter™ II doubles as a light shield. Accurate measurements cannot be obtained unless the sample or blank is covered with the cap. Use the instrument cap cord to secure the cap to the body of the colorimeter and prevent loss of the cap.
  • Page 13 Instrument Cap Cord, continued Figure 1 Attaching the Instrument Cap Cord 1—13...
  • Page 14 1—14...

  • Page 15: Bromine, Total, Lr

    Bromine, Total, LR (0.05 to 4.50 mg/L Br Method 8016 For water, wastewater, and seawater ® ® DPD Method* (PermaChem Powder Pillows or AccuVac Ampuls) Measuring Hints • Analyze samples immediately. Do not use plastic containers to collect samples. Note: The Pocket Colorimeter™...
  • Page 16 Bromine, Total, LR, continued Bromine, Total, Low Range (using Powder Pillows) Fill a 10-mL sample cell Press the key to Remove the instrument POWER sample (the blank). Cap. turn the meter on. cap. Place the blank in the cell holder. Cover the blank The arrow should indicate Samples must be Note:...
  • Page 17 Bromine, Total, LR, continued Press Fill a second sample cell Add the contents of one ZERO/SCROLL to the 10 mL line with DPD Total Chlorine Powder The display will show sample. Wipe off any liquid Pillow to the sample cell (the “- - - -”...
  • Page 18 Bromine, Total, LR, continued Cap and shake gently for Place the prepared Press READ/ENTER 20 seconds. sample in the cell holder and The display will show cover with the instrument Shaking dissipates Note: “- - - -”, followed by results cap.
  • Page 19 Bromine, Total, LR, continued ® Bromine, Total, Low Range (using AccuVac Ampuls) Fill a 10-mL sample Press the Remove the instrument POWER cell with sample (the to turn the meter on. cap. Place the blank in the blank). Cap. Collect at cell holder.
  • Page 20 Bromine, Total, LR, continued Press Fill a DPD Total Quickly invert the ZERO/SCROLL Chlorine Reagent AccuVac ampul several times to The display will show Ampul with sample. Keep mix. Wipe off any liquid or “- - - -” then “0.00”. the tip of the ampule fingerprints.
  • Page 21 Bromine, Total, LR, continued Place the prepared Press READ/ENTER sample in the cell holder The display will show and cover with the “- - - -”, followed by instrument cap. Wait at results in mg/L bromine. least three but no more than six minutes after filling the ampule.

  • Page 22: Sampling And Storage

    Bromine, Total, LR, continued Sampling and Storage Analyze samples immediately. Do not collect samples in plastic containers. Accuracy Check Standard Additions Method ® 1. Snap the neck off a low range Chlorine Standard Solution PourRite Ampule, 20–30 mg/L Cl ® 2.
  • Page 23 Standard solutions for bromine or chlorine are difficult and time-consuming to prepare. Errors can occur if attention to detail is not addressed during preparation of the standards. Hach Company prepares the calibration curve under rigorous analytical laboratory conditions. Hach strongly recommends using the factory calibration.

  • Page 24: Interferences

    Bromine, Total, LR, continued If a chlorine standard is used, multiply its concentration by 2.25 to determine the equivalent bromine concentration. Interferences Interfering Interference Levels and Treatments Substance Acidity Greater than 150 mg/L CaCO . May not develop full color or color may fade instantly.
  • Page 25 Bromine, Total, LR, continued Interfering Interference Levels and Treatments Substance Hardness No effect at less than 1,000 mg/L as CaCO Iodine, I Interferes at all levels Manganese, Adjust sample pH to 6–7. Oxidized Add 3 drops Potassium Iodide (30-g/L) (Cat. No. 343-32) , Mn ) or to a 25-mL sample.

  • Page 26: Method Performance

    Bromine, Total, LR, continued Method Performance Estimated Detection Limit (EDL) = 0.05 mg/L Br Typical Precision (95% confidence interval) = 2.25 ± 0.11 mg/L Br 1—26...

  • Page 27: Bromine, Total, Hr

    Analyze samples immediately. Do not use plastic containers to collect samples. Note: The Pocket Colorimeter II is designed to measure solutions contained in sample cells. dip the meter in the sample or pour the sample directly into the cell holder.
  • Page 28 Bromine, Total, HR, continued Fill a 1-cm/10-mL Press the key to Remove the meter cap. POWER sample cell with sample. turn the meter on. Place the blank into the cell Cap. This is the blank. holder, with the diamond The arrow should indicate mark facing the back of the the high range channel (HR).
  • Page 29 Bromine, Total, HR, continued Press Fill another 1-cm/10-mL Add the contents of two ZERO/SCROLL sample cell to the 5-mL line DPD Total Chlorine Powder The display will show with sample. Pillows to the sample cell “- - - -” then “0.0”. (the prepared sample).
  • Page 30 Bromine, Total, HR, continued Cap and shake gently for Place the prepared Press READ/ENTER 20 seconds. sample in the cell holder and The display will show cover with the instrument Shaking dissipates “- - - -”, followed by results Note: cap.

  • Page 31: Sampling And Storage

    Bromine, Total, HR, continued Note: If the sample temporarily turns yellow after reagent addition, or if the display shows overrange (page 2—12), dilute a fresh sample and repeat the test. A slight loss of bromine may occur because of the dilution. Multiply the result by the appropriate dilution factor. Sampling and Storage Analyze samples immediately.
  • Page 32 Hach strongly recommends using the factory calibration. A user calibration or a user-prepared bromine standard may be required by a regulatory official or agency. Two options are available on the Pocket Colorimeter II to meet this requirement. A bromine standard may be prepared and used to validate the calibration curve using the Standard Calibration Adjust feature (see page 2—13 for more information.).

  • Page 33: Interferences

    Bromine, Total, HR, continued If a chlorine standard is used, multiply its concentration by 2.25 to determine the equivalent bromine concentration. Interferences Interfering Interference Levels and Treatments Substance Acidity Greater than 150 mg/L CaCO . May not develop full color or color may fade instantly.
  • Page 34 Bromine, Total, HR, continued Interfering Interference Levels and Treatments Substance Hardness No effect at less than 1,000 mg/L as CaCO Iodine, I Interferes at all levels Manganese, Adjust sample pH to 6–7. Oxidized Add 3 drops Potassium Iodide (30-g/L) (Cat. No. 343-32) to , Mn ) or a 25-mL sample.

  • Page 35: Method Performance

    Bromine, Total, HR, continued Method Performance Estimated Detection Limit (EDL) = 0.2 mg/L Br Typical Precision (95% confidence interval) = 11.3 ± 0.5 mg/L Br Summary of Method Bromine residuals react with DPD (N,N-diethyl-p-phenylenediamine) to form a pink color which is proportional to the total bromine concentration. The range of analysis is extended in the high range procedure by adding additional powder to increase the ratio of indicator to sample.
  • Page 36 Bromine, Total, HR, continued ® Required Apparatus (Using AccuVac Ampuls) Description Unit Cat. No. Beaker, 50 mL ..................each ..500-41H Optional Reagents ® Chlorine Standard Solution, Voluette Ampules, 50-75 mg/L, 10 mL..............16/pkg ..14268-10 Chlorine Standard Solution, Pour Rite Ampules, 25-30 mg/L..................
  • Page 37 Bromine, Total, HR, continued Optional Apparatus, continued Description Unit Cat. No. Cylinder, graduated, 25 mL, poly............each ..1081-40 Cylinder, graduated, 100 mL, PMP ........... each ..2172-42 sens ™1 Basic Portable pH Meter, with electrode ..... each ..51700-10 ®...
  • Page 38 1—38...

  • Page 39: Chlorine, Free And Total, Hr

    Chlorine, Free and Total, HR (0.1 to 10.0 mg/L Cl Method 10069 (Free) For water, treated water, estuary water, and seawater Method 10070 (Total) For water, treated waters, wastewater, estuary water, and seawater DPD Method* USEPA accepted for reporting drinking water analyses (free and total chlorine) and wastewater analyses (total chlorine) Measuring Hints •...
  • Page 40 Chlorine, Free and Total, HR, continued • High range free chlorine determinations are subject to variable levels of interferences from monochloramine. See Interferences on page 1—46. Note: The Pocket Colorimeter™ II is designed to measure solutions contained in sample cells. dip the meter in the sample or pour the sample directly into the cell holder.
  • Page 41 Chlorine, Free and Total, HR, continued Fill a 1-cm/10-mL cell to Press the key to Remove the meter cap. POWER the 5-mL line with sample turn the meter on. Place the blank into the cell (the blank). Cap. holder, with the diamond The arrow should indicate mark facing the back of the the chlorine channel...
  • Page 42 Chlorine, Free and Total, HR, continued Press: Fill another 1-cm/10-mL Add the contents of one ZERO/SCROLL sample cell to the 5-mL line DPD Free Chlorine or one The display will show with sample. Cap. DPD Total Chlorine Powder “- - - -” followed by “0.0”. Pillows to the sample cell Note: Do not use the same Remove the blank.
  • Page 43 Chlorine, Free and Total, HR, continued For free chlorine, place For total chlorine, place Press READ/ENTER the prepared sample cell in the prepared sample in the The instrument will show the cell holder within one cell holder and cover with “- - - -”...

  • Page 44: Accuracy Check

    Chlorine, Free and Total, HR, continued Accuracy Check Standard Additions Method ® a. Snap the neck off a high range Chlorine Standard Solution Voluette Ampule, 50–70 mg/L Cl ® b. Use a TenSette pipet to add 0.1, 0.2, and 0.3 mL of standard to three separate 5-mL samples.
  • Page 45 A user calibration or a user-prepared chlorine standard may be required by a regulatory official or agency. Two options are available on the Pocket Colorimeter II to meet this requirement. A chlorine standard may be prepared and used to validate the calibration curve using the Standard Calibration Adjust feature (see page 2—13...

  • Page 46: Interferences

    Chlorine, Free and Total, HR, continued Interferences Interfering Interference Levels and Treatments Substance Acidity Greater than 150 mg/L CaCO . May not develop full color or color may fade instantly. Neutralize to pH 6–7 with 1 N Sodium Hydroxide. Determine amount to be added on separate 5-mL sample, then add the same amount to the sample being tested.
  • Page 47 Chlorine, Free and Total, HR, continued Interfering Interference Levels and Treatments Substance Manganese, Adjust sample pH to 6–7. Oxidized Add 3 drops Potassium Iodide (30-g/L) (Cat. No. 343-32) , Mn ) or to a 5-mL sample. Chromium, Mix and wait one minute. Oxidized (Cr Add 3 drops Sodium Arsenite (5-g/L) (Cat.
  • Page 48 Chlorine, Free and Total, HR, continued Interfering Interference Levels and Treatments Substance Monochloramine For conventional free chlorine disinfection (beyond the breakpoint), monochloramine concentrations are very low. If monochloramine is present in the sample, its interference in the free chlorine test varies with the temperature, the relative amount of monochloramine to free chlorine, and the time required to do the analysis.

  • Page 49: Spec√ Secondary Standards

    Chlorine, Free and Total, HR, continued Spec√ Secondary Standards The DPD Chlorine Secondary Standards kit (Cat. No. 26353-00) cannot be used on the high range (HR) chlorine channel. Method Performance Estimated Detection Limit (EDL) = 0.1 mg/L Cl Typical Precision (95% confidence interval) = 5.0 ± 0.2 mg/L Cl Summary of Method Chlorine can be present in water as free chlorine and as combined chlorine.

  • Page 50: Replacement Parts

    Chlorine, Free and Total, HR, continued Subtract the results of the free chlorine test from the total chlorine test to obtain the combined chlorine concentration. The range of analysis using the DPD method for chlorine is extended by adding more indicator in proportion to sample volume.
  • Page 51 Chlorine, Free and Total, HR, continued Optional Reagents Description Unit Cat. No. Chlorine Standard Solution, Voluette Ampules, 50–75 mg/L, 2-mL ..............20/pkg..14268-20 Potassium Iodide Solution, 30 g/L ........100 mL MDB*..343-32 Sodium Arsenite Solution, 5 g/L ........100 mL MDB..1047-32 Sodium Hydroxide Standard Solution, 1 N ......100 mL MDB..
  • Page 52 Chlorine, Free and Total, HR, continued Optional Apparatus, continued Description Unit Cat. No. ® Pipet, TenSette , 0.1 to 1.0 mL ............each ..19700-01 ® Pipet Tips, For 19700-01 TenSette Pipet........50/pkg ..21856-96 Replacement Parts Cap for 1-cm/10 mL sample cell ............each ..52626-00 Instrument Cap/light shield..............each ..

  • Page 53: Chlorine Dioxide

    Chlorine Dioxide (0.05 to 5.00 mg/L ClO Method 10126 For water and wastewater DPD Method* USEPA accepted for drinking water Measuring Hints • Chlorine dioxide samples cannot be stored, they must be analyzed immediately after collection to minimize loss of chlorine dioxide. •...
  • Page 54 Chlorine Dioxide, continued • Use a timer for reagent reaction and be consistent for all samples. • Gently swirl samples to mix reagents. Do not shake sample cells or ampules. Do not invert sample cells. AccuVac Ampuls can be inverted as they contain little air. Vigorous agitation may cause loss of volatile chlorine dioxide before it can react.
  • Page 55 Chlorine Dioxide, continued Chlorine Dioxide (using Powder Pillows) Fill a 10-mL sample cell Press the key to Place the cell into the cell POWER with sample (the blank). turn the meter on. holder. Cover the cell with the instrument cap. The arrow should indicate Note: Samples must be channel 1.
  • Page 56 Chlorine Dioxide, continued Press Fill a second sample cell Immediately add the ZERO/SCROLL with 10 mL of sample. contents of one DPD Free The display will show Immediately add four drops Powder Pillow. Cap and “- - - -” then “0.00”. of Glycine Reagent to the swirl gently for 20 sec.
  • Page 57 Chlorine Dioxide, continued Within one minute of Cover the sample with Press READ/ENTER adding the DPD to the the instrument cap. The display will show sample, place the prepared “- - - -”, followed by results sample into the cell holder. in mg/L ClO 1—57...
  • Page 58 Chlorine Dioxide, continued ® Chlorine Dioxide (using AccuVac Ampuls) Fill a 10-mL sample cell Press the key to Place the cell into the cell POWER with sample (the blank). turn the meter on. holder. Cover the cell with the instrument cap. The arrow should indicate Note: Samples must be channel 2.
  • Page 59 Chlorine Dioxide, continued Press Collect 40 mL of sample Fill a DPD Free Chlorine ZERO/SCROLL in a 50- or 100-mL beaker. Reagent AccuVac Ampul The display will show Add 16 drops of Glycine with the pretreated sample in “- - - -” then “0.00”. Reagent to the 40 mL of the beaker.
  • Page 60 Chlorine Dioxide, continued Quickly invert the Within one minute after Press READ/ENTER ampule several times to mix. filling the ampule, place it The display will show Wait 30 seconds for any into the cell holder. Cover “- - - -” followed by the undissolved powder to the ampule with the results in mg/L chlorine...

  • Page 61: Sampling And Storage

    Chlorine Dioxide, continued Sampling and Storage Analyze samples for chlorine dioxide immediately after collection. Chlorine dioxide is a strong oxidizing agent and is unstable in natural waters. It reacts rapidly with various inorganic compounds, but oxidizes organic compounds more slowly. Many factors, including reactant concentrations, sunlight, pH, temperature, and salinity influence decomposition of chlorine dioxide in water.
  • Page 62 Chlorine Dioxide, continued Because chlorine dioxide is difficult and hazardous to produce, check the DPD and Glycine Reagents by using chlorine standards. Proceed as follows: Prepare a 1-mg/L free chlorine standard. a. Obtain Free Chlorine Standards (Cat. No. 14268-10). b. Determine the concentration of the standard from the certificate of analysis shipped with the standard (50–75 mg/L Cl ).
  • Page 63 Hach recommends using the factory calibration. A user calibration or a user-prepared chlorine dioxide standard may be required by a regulatory official or agency. Two options are available on the Pocket Colorimeter II to meet this requirement. A chlorine dioxide standard may be prepared and used to validate the calibration curve...

  • Page 64: Method Performance

    Chlorine Dioxide, continued In addition, a user-generated calibration curve can be made and programmed into the Pocket Colorimeter™ II. See User-Entered Calibration on page 2—15. Method Performance Typical Precision (95% confidence interval): 4.78 ± 0.22 mg/L ClO (AccuVac) 2.08 ± 0.04 mg/L ClO (Powder Pillows) Estimated Detection Limit: EDL = 0.04 mg/L ClO...
  • Page 65 Chlorine Dioxide, continued Samples containing monochloramine will cause a gradual drift to higher chlorine dioxide readings. When read within one minute of reagent addition, 3.0 mg/L monochloramine will cause an increase of less than 0.10 mg/L in the chlorine dioxide reading.

  • Page 66: Summary Of Method

    Chlorine Dioxide, continued also interfere depending on their ability to prevent Glycine from reacting with any chlorine in the sample. It may be necessary to add more Glycine to overcome this interference. Summary of Method Twenty percent of the chlorine in the chlorine dioxide is reduced to chlorite, which reacts with DPD (N,N-diethyl-p-phenylenediamine) indicator to form a pink color.
  • Page 67 Chlorine Dioxide, continued Required Reagents (Using AccuVac Ampuls) Description Units Cat. No. ® DPD AccuVac /Glycine Reagent Set (25 tests) ........27710-00 Includes: ® (1) DPD Free Chlorine Reagent AccuVac Ampuls, 25/pkg (1) Glycine Reagent, 29 mL Require Apparatus (Using AccuVac Ampuls) Beaker, 50-mL, glass .................each..
  • Page 68 Chlorine Dioxide, continued Optional Reagents, continued Description Units Cat. No. Sodium Hydroxide Standard Solution, 1 N ....... 100-mL MDB ..1045-32 Sulfuric Acid Standard Solution, 1 N ........ 100-mL MDB ..1270-32 Water, deionized ..................4 L ..272-56 Optional Apparatus ®...

  • Page 69: Measuring Hints

    2 pH units. Note: The Pocket Colorimeter II is designed to measure solutions contained in sample cells. dip the meter in the sample or pour the sample directly into the cell holder. DO NOT...
  • Page 70 continued Collect about 50 mL of Press the key to Using the calibrated POWER sample in a beaker and fill a turn the meter on. dropper, add 0.5 mL of 10-mL sample cell to the Phenol Red Solution to the The arrow should indicate 10-mL mark with sample.
  • Page 71 continued Fill a second sample cell Place the blank into the Cover the cell with the to the 10-mL mark with the cell holder. instrument cap. original sample. Cap the Wipe liquid off sample Note: sample cell. This is the cells or damage to the blank.
  • Page 72 continued Press Place the prepared Cover the cell with the ZERO/SCROLL sample in the cell holder. instrument cap. The display will show Wipe liquid off sample “- - - -” then “0.0”. Note: cells. Remove the blank from the cell holder. 1—72...
  • Page 73 continued Press READ/ENTER The display will show “- - - -”, followed by results in pH units. 1—73...

  • Page 74: Accuracy Check

    continued Accuracy Check Preparation of pH 7.0 Standard Solution A pH 7.00 standard solution is necessary to calibrate or check the accuracy of the pH measurement using the Standard Calibration Adjust feature (see Standard Calibration Adjust on page 2—13). Use the pH 7.00 Buffer Vial (included in this kit) or bulk buffer solution (see Optional Reagents on page 1—76).

  • Page 75: Standard Calibration Adjust

    continued Standard Calibration Adjust To perform a standard calibration adjustment using the pH 7.0 buffer, see Standard Calibration Adjust on page 2—13. Summary of Method Proper pH control in drinking water and swimming pools is necessary for many reasons. Bactericidal activity of chlorine is greatest when the pH is less than 7.4. Alum-type flocculents, important for clear water, perform best in a pH range of 7.2 to 8.0.

  • Page 76: Replacement Parts

    continued Replacement Parts Required Reagents Description Unit Cat. No. Buffer Solution, pH 7.0..............25 mL ..12222-20 Phenol Red Solution, Spec-grade...........50 mL ..26575-12 Required Apparatus Sample Cells, 10 mL, with caps ............6/pkg ..24276-06 Optional Reagents Buffer Solution, pH 7.0..............500 mL ..12222-49 Water, deionized ................
  • Page 77 Section 2 Instrument Manual 2—1...
  • Page 78 2—2...

  • Page 79: Instrument Operation

    Instrument Operation Key Functions Description Function On/Off/Backlight POWER To turn on the backlight, turn on the instrument, then press and hold the power key until the backlight turns on. Press and hold again to turn off the backlight. This key functions the same in all instrument modes and ranges.

  • Page 80: Menu Selections

    Instrument Operation, continued Description Function Enter/Exit the menu mode MENU Press and hold for approximately 5 seconds to enter user-entered method mode. Menu Selections Press the key to access the menu selections. MENU Switching Ranges 1. Press the key. The display will show “SEL”. A flashing arrow indicates MENU the current range.

  • Page 81: Recalling Stored Measurements

    Instrument Operation, continued 2. Press . The digit to be edited will flash. READ/ENTER 3. Use the key to change the entry, then press ZERO/SCROLL READ/ENTER accept and advance to the next digit. The time is entered in 24-hour format. Recalling Stored Measurements 1.

  • Page 82: Battery Installation

    Instrument Operation, continued Battery Installation Figure 1 on page 2—7 provides an exploded view of battery installation. 1. Unhook the latch and remove the battery compartment cover. The polarities are shown on the battery holder. 2. Place the four batteries provided with the instrument in the holder as indicated and replace the battery compartment cover.
  • Page 83 Instrument Operation, continued Figure 1 Battery Installation 2—7...
  • Page 84 2—8...

  • Page 85: Error Codes

    Error Codes When the instrument cannot perform the function initiated by the operator, an error message will appear in the display. Refer to the appropriate message information below to determine what the problem is and how it can be corrected. Resolve error messages in the order that they appear on the display.
  • Page 86 Error Codes, continued 3. E-2 LED Error The LED (light source) is out of regulation. • Replace batteries. • Verify LED lights up (inside the cell holder) when the READ/ENTER key is pressed. ZERO/SCROLL • If the problem persists, contact a Service Center (page 2—37).
  • Page 87 Error Codes, continued • If the problem persists, contact a Service Center (page 2—37). 5. E-6 Abs Error (User mode) Indicates that the absorbance value is invalid, or indicates an attempt to make a curve with less than two points. •...
  • Page 88 Error Codes, continued 8. Underrange—flashing number below stated test range • Verify instrument cap is correctly seated. • Check zero by measuring a blank. If error recurs, re-zero the instrument. • If the problem persists, contact a Service Center (page 2—37).

  • Page 89: Standard Calibration Adjust

    Standard Calibration Adjust The Pocket Colorimeter™ II instrument is factory-calibrated and ready for use without user calibration. Use of the factory calibration is recommended unless the user is required to generate a calibration. The Standard Calibration Adjust can be used to meet regulatory requirements. This feature allows the factory default calibration curve to be adjusted with a known standard.
  • Page 90 Standard Calibration Adjust, continued 7. Press to access the Edit function, then press ZERO/SCROLL READ/ENTER begin editing. The digit to be edited will flash. Use the key to ZERO/SCROLL change the entry, then press to accept and advance to the READ/ENTER next digit.

  • Page 91: User-Entered Calibration

    User-Entered Calibration Overview The Pocket Colorimeter™ II will accept a user-prepared calibration curve. The curve can extend from 0 to 2.5 absorbance. A user-prepared calibration curve may be entered into any channel that does not contain a factory-programmed curve. These channels are labeled “abs”...
  • Page 92 User-Entered Calibration, continued • CAL—Used to enter and edit standard values and measure absorbance values, or review the existing calibration. • Edit—Used to enter and edit standard values and absorbance values with the keypad or review the existing calibration. Used to enter a predetermined calibration curve.

  • Page 93: Calibration Procedure Using Prepared Standards

    User-Entered Calibration, continued • Once in the CAL or Edit option, press the key to navigate through READ/ENTER each option. Note: Press to quickly scroll through each option. ZERO/SCROLL Calibration Procedure Using Prepared Standards Note: Deionized water or a reagent blank can be used to zero during the calibration procedure. Calibrations generated with deionized water as the zero will give less accurate results if the reagent blank is significantly more turbid or colored than deionized water.
  • Page 94 User-Entered Calibration, continued 3. Insert the reagent blank or deionized water into the meter and cover with the cap. Press the key. The meter will display “- - - -”, followed by ZERO/SCROLL “0.000”. This initializes (zeroes) the meter. 4. Press the key and hold it down until the display shows “USER”, followed MENU by “CAL”.
  • Page 95 User-Entered Calibration, continued 9. Insert the reagent blank or deionized water into the cell holder. Cover the blank with the instrument cap. 10. Press the key. The meter will measure and display the absorbance READ/ENTER value for “S0”. 11. Remove the sample blank. Press the key.

  • Page 96: Entering A Predetermined Calibration Curve

    User-Entered Calibration, continued 16. Press the key twice to exit and accept the changes. The instrument will MENU use this calibration to determine the displayed concentration of future sample measurements. Entering a Predetermined Calibration Curve Note: Entering a predetermined calibration curve requires at least two data pairs. Each data pair requires a concentration value and the absorbance value for the given concentration.
  • Page 97 User-Entered Calibration, continued 4. Enter the concentration value and absorbance value of the first data pair (S0, A0). 5. To enter the S0 value, press . Use the key to select READ/ENTER ZERO/SCROLL the numerical value, then press the key to accept the entry and READ/ENTER advance to the next decimal place.

  • Page 98: Editing A User-Entered Or Factory Calibration Curve

    User-Entered Calibration, continued 10. When all the calibration data has been entered, press twice to return to MENU the measurement mode. Editing a User-entered or Factory Calibration Curve 1. Press the key and hold it down until the display shows “USER”, followed MENU by “CAL”.
  • Page 99 User-Entered Calibration, continued 5. To edit the S0 value, press . Use the key to select the READ/ENTER ZERO/SCROLL numerical value, then press the key to accept the entry and READ/ENTER advance to the next decimal place. Repeat this sequence until the S0 concentration value is entered.

  • Page 100: Exiting The Calibration Routine

    User-Entered Calibration, continued Note: When a factory calibration curve has been edited, the “calibration adjust” icon will appear in the display. Exiting the Calibration Routine Exit the calibration routine by pressing the key to return to measurement MENU mode. The instrument uses the last completed user-entered calibration or the factory calibration if no user-entered calibration has been completed.

  • Page 101: Retrieving The Factory Calibration

    User-Entered Calibration, continued 5. Press to delete. Repeat for all points to be deleted. READ/ENTER Note: The minimum number of valid points is two. For example, if five points have been entered, three can be deleted using this feature. 6. Press to return to the measurement mode.

  • Page 102: Maximum/Minimum Displayed Value

    User-Entered Calibration, continued Maximum/Minimum Displayed Value In meters with absorbance (Abs) ranges, the maximum displayed value and minimum displayed value is related to the value of the standards entered in a user calibration. Measurements that exceed the minimum or maximum standards entered in the user calibration will return a flashing number indicating “underrange”...
  • Page 103 Example 2 For a calibration with the following standards: S0=1.00 S1=2.00 S2=4.00 Maximum Displayed Value 4.00 Minimum Displayed Value 1.00 For Hach-calibrated programs, the maximum and minimum displayed values always equal the factory-calibrated values and cannot be changed. 2—27...

  • Page 104: Certification

    Certification Hach Company certifies this instrument was tested thoroughly, inspected, and found to meet its published specifications when it was shipped from the factory. The Pocket Colorimeter™ II instrument has been tested and is certified as indicated to the following instrumentation standards:...
  • Page 105 Interference-causing Equipment Regulations. Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. FCC Part 15, Class “A” Limits: Supporting test records from Hach EMC Test Facility, certified compliance by Hach Company. 2—29...
  • Page 106 Certification, continued This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
  • Page 107 Certification, continued 1. Remove power from the Pocket Colorimeter instrument by removing one of its batteries to verify that it is or is not the source of the interference. 2. Move the Pocket Colorimeter instrument away from the device receiving the interference.
  • Page 108 2—32...

  • Page 109: General Information

    GENERAL INFORMATION At Hach Company, customer service is an important part of every product we make. With that in mind, we have compiled the following information for your convenience. 2—33...
  • Page 110 2—34...

  • Page 111: How To Order

    (800) 227-HACH (800-227-4224) Loveland, Colorado 80539-0389 U.S.A. By FAX: For order information by E-mail: (970) 669-2932 (Hach Loveland) orders@www.hach.com Information Required: • • Hach account number (if available) Purchase order number • • Billing address Catalog number • • Shipping address Brief description or model number •...
  • Page 112 Call 1-800-227-4224 or E-mail techhelp@hach.com. International Customers Hach maintains a worldwide network of dealers and distributors. To locate the representative nearest you, send E-mail to intl@hach. com or call (970) 669-3050. In Canada Hach Instrument Service Centre, Winnipeg, Manitoba, Canada Telephone: (204) 632-5598;...

  • Page 113: Repair Service

    Repair Service Authorization must be obtained from Hach Company before sending any items for repair. Please contact the Hach Service Center serving your location. In the United States: Canada: Hach Company Hach Sales & Service Canada Ltd. 100 Dayton Avenue...

  • Page 114: Warranty

    In the event that a defect is discovered during the warranty period, Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price, excluding original shipping and handling charges.
  • Page 115 Hach Company • any product not used in accordance with the instructions furnished by Hach Company • freight charges to return merchandise to Hach Company • freight charges on expedited or express shipment of warranted parts or product • travel fees associated with on-site warranty repair...
  • Page 116 On the basis of strict liability or under any other legal theory, in no event shall Hach Company be liable for any incidental or consequential damages of any kind for breach of warranty or negligence.

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