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Hach POCKET COLORIMETER II Instruction Manual

Analysis systems, sulfate (so4), silica (sio2)
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59578-88
™
POCKET COLORIMETER
II
ANALYSIS SYSTEMS
INSTRUCTION MANUAL
Sulfate (SO
)
4
Silica (SiO
)
2
© Hach Company, 2006. All rights reserved. Printed in the U.S.A.
te/dk 12/06 3ed

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  • Page 1 59578-88 ™ POCKET COLORIMETER ANALYSIS SYSTEMS INSTRUCTION MANUAL Sulfate (SO Silica (SiO © Hach Company, 2006. All rights reserved. Printed in the U.S.A. te/dk 12/06 3ed...
  • Page 2 Important Note This manual is intended for use with the following Pocket Colorimeter II instruments: Silica, HR (SiO Cat. No. 59530-34 Sulfate (SO Cat. No. 59530-29 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 Silica, HR ........................ 1—15 Measuring Hints ....................1—15 Sampling and Storage..................
  • Page 4 Table of Contents, continued Measuring Hints ....................1—27 Sampling and Storage ..................1—36 Accuracy Check....................1—37 Standard Calibration Adjust Method..............1—38 Method Performance ..................1—38 Interferences ......................1—39 Summary of Method..................1—39 Instrument Operation ..................2—3 Key Functions......................2—3 Menu Selections ....................2—4 Switching Ranges....................2—4 Setting the Time ....................2—4 Recalling Stored Measurements ................2—5 Battery Installation .....................2—6 Error Codes ......................2—9...
  • Page 5 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..............
  • Page 6 1—6...

  • 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: 450 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: Silica, Hr

    After adding reagent, a yellow color will develop if silica or phosphorus is present. 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 16 Silica, HR, continued Press the key to Fill two 10-mL sample Add the contents of one POWER turn the meter on. cells with 10 mL of sample. Molybdate Reagent Powder Cap one of the cells (the Pillow to the remaining cell. The arrow should indicate blank) and set it aside.
  • Page 17 Silica, HR, continued HRS MIN SEC HRS MIN SEC Add the contents of one Wait 10 minutes. Uncap the cell. Add the Silica, HR Acid Reagent contents of one Citric Acid Powder Pillow. Cap the cell Reagent Powder Pillow. Cap and shake gently to mix.
  • Page 18 Silica, HR, continued HRS MIN SEC HRS MIN SEC Begin timing a Place the blank in the Cover the blank with the two-minute reaction period cell holder. instrument cap. and proceed with step 8. Wipe fingerprints or Note: liquid off both cells. 1—18...
  • Page 19 Silica, HR, continued Press Immediately after the Cover the sample cell ZERO/SCROLL two-minute reaction period, with the instrument cap. The display will show place the prepared sample in “- - - -” then “0”. the cell holder. Remove the blank from the cell holder.

  • Page 20: Sampling And Storage

    Silica, HR, continued Press READ/ENTER The display will show “- - - -”, followed by results in mg/L silica (SiO Sampling and Storage Collect samples in clean plastic or glass bottles. Analyze samples as soon as possible after collection. If necessary, store samples up to 7 days at 4 °C (39 °F) or below.

  • Page 21: Accuracy Check

    10 mg/L for each 0.1 mL of standard added. 3. If these increases do not occur, an interfering substance is likely present. See Interferences on page 1—22 or consult the Hach Water Analysis Handbook for more information on standard additions. Standard Solutions Method...

  • Page 22: Standard Calibration Adjust Method

    Silica, HR, continued Standard Calibration Adjust Method To perform a standard calibration adjustment using the 50 mg/L silica standard or using an alternative concentration, see Standard Calibration Adjust on page 2—13. Method Performance Typical Precision (95% CI): 50 ± 2 mg/L SiO Estimated Detection Limit: EDL = 1 mg/L SiO Interferences...
  • Page 23 Silica, HR, continued Occasionally a sample contains silica which reacts very slowly with molybdate. A pretreatment with sodium bicarbonate, then sulfuric acid will make these unreactive forms reactive to molybdate. Standard Methods for the Examination of Water and Wastewater provides pretreatment information in the “Silica Digestion with Sodium Bicarbonate”...

  • Page 24: Summary Of Method

    Silica, HR, continued Summary of Method Silica and phosphate in the sample react with molybdate ions under acidic conditions to form yellow silicomolybdic acid complexes and phosphomolybdic acid complexes. Addition of citric acid destroys the phosphate complexes. Silica is then determined by measuring the remaining yellow color. Required Reagents (Using Powder Pillows) Description Units...
  • Page 25 Silica, HR, continued Optional Reagents, continued Description Units Cat. No. Silica Standard Solution, 50 mg/L..........237 mL ..1117-10 Silica Standard Solution, 1000 mg/L .......... 500 mL ..194-49 Sodium Bicarbonate, ACS..............454 g ..776-01 Sulfuric Acid Standard Solution, 1.000 N ......100 mL MDB ..1270-32 Water, deionized..................4 L ..
  • Page 26 1—26...

  • Page 27: Sulfate

    Sulfate (2 to 70 mg/L) Method 8051 USEPA Accepted for reporting wastewater analysis* ® SulfaVer 4 Method** ® ® (PermaChem Powder Pillows or AccuVac Ampuls) Measuring Hints • The sample cell and cap should be cleaned thoroughly after each use. If this is not done, a white film will form on them and adversely affect the results.
  • Page 28 • Accuracy is not affected by undissolved powder. • Hach strongly recommends that, for optimum test results, reagent accuracy be checked with each new lot of reagents. Use the standard solution listed in Accuracy Check on page 1—37. ®...
  • Page 29 Sulfate, continued Sulfate (using Powder Pillows) Press the key to Fill a 10-mL sample cell Add the contents of one POWER turn the meter on. to the 10-mL line with SulfaVer 4 Powder Pillow to sample. the sample cell (the prepared The arrow should indicate sample).
  • Page 30 Sulfate, continued HRS MIN SEC HRS MIN SEC Invert the sample cell Wait 5 minutes. Allow Fill a second sample cell several times to mix. Wipe the cell to stand with 10 mL of sample (the off any liquid or undisturbed.
  • Page 31 Sulfate, continued Place the blank in the Cover the blank with the Press ZERO/SCROLL cell holder. instrument cap. The display will show “- - -” then “0”. Remove the blank from the cell holder. 1—31...
  • Page 32 Sulfate, continued Within 5 minutes after Cover the sample cell Press READ/ENTER the reaction period ends, with the instrument cap. The display will show place the prepared sample in “- - -” , followed by results the cell holder. in mg/L sulfate. 1—32...
  • Page 33 Sulfate, continued Sulfate (using AccuVac Ampuls) Press the Fill a 10-mL sample cell Fill a SulfaVer 4 POWER to turn the meter on. to the 10-mL line with AccuVac Ampul with sample (the blank). Cap. sample. Keep the tip of the The arrow should indicate Collect at least 40 mL of ampule immersed until...
  • Page 34 Sulfate, continued HRS MIN SEC HRS MIN SEC Quickly invert the Wait 5 minutes. Allow Place the blank in the ampul several times to the cell to stand cell holder. mix. Wipe off any liquid undisturbed. or fingerprints. 1—34...
  • Page 35 Sulfate, continued Cover the blank with Press Within 5 minutes after ZERO/SCROLL the instrument cap. the reaction period ends, The display will show place the prepared sample “- - -” then “0”. in the cell holder. Remove the blank from the cell holder.

  • Page 36: Sampling And Storage

    Sulfate, continued Cover the sample Press READ/ENTER cell with the instrument The display will show cap. “- - -” , followed by results in mg/L sulfate. Sampling and Storage Collect samples in clean plastic or glass bottles. Samples may be stored up to 28 days by cooling to 4 °C (39 °F) or lower.

  • Page 37: Accuracy Check

    Sulfate, continued Accuracy Check Standard Additions Method (Powder Pillows) 1. Snap the neck off a Sulfate Standard PourRite™ Ampule, 1000 mg/L SO ® 2. Use a TenSette Pipet to add 0.1, 0.2, and 0.3 mL of standard to three 10-mL samples.

  • Page 38: Standard Calibration Adjust Method

    Sulfate, continued Standard Solutions Method Use a 50 mg/L sulfate standard in place of the sample in the AccuVac Ampul Standard Additions Method. Perform the procedure as described. Multi-parameter standards that simulate typical wastewater and drinking water concentrations without dilution are available to confirm test results. See Optional Reagents on page 1—40.

  • Page 39: Interferences

    Sulfate, continued Interferences The following interfere at levels above those concentrations listed: Calcium: 20,000 mg/L as CaCO Chloride: 40,000 mg/L as Cl Magnesium: 10,000 mg/L as CaCO Silica: 500 mg/L as SiO Summary of Method Sulfate ions in the sample react with barium in the SulfaVer 4 Sulfate Reagent to form insoluble barium sulfate.
  • Page 40 Sulfate, continued Required Reagents and Apparatus (Using Powder Pillows) Description Units Cat. No. ® ® SulfaVer 4 Sulfate PermaChem Powder Pillows.....100/pkg ..21067-69 Required Reagents and Apparatus (Using AccuVac Ampuls) Description Units Cat. No. ® ® SulfaVer 4 Sulfate AccuVac Ampuls ........25/pkg ..25090-25 Beaker, 50-mL ..................each ..
  • Page 41 Sulfate, continued Sulfate Standard Solution, 1000 mg/L........500 mL ..21757-49 Sulfate Standard Solution, PourRite™ Ampule, 1000 mg/L, 2 mL ................. 20/pkg ..21757-20 Water, deionized..................4 L ..272-56 Optional Apparatus Description Units Cat. No. ® AccuVac Snapper Kit ................ each ..24052-00 Brush, cylinder ..................
  • Page 42 1—42...
  • Page 43 Section 2 Instrument Manual 2—1...
  • Page 44 2—2...

  • Page 45: 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 46: 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 47: 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 48: 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 49 Instrument Operation, continued Figure 1 Battery Installation 2—7...
  • Page 50 2—8...

  • Page 51: 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 52 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 53 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 54 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 55: 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 56 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 57: 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 58 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 59: 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. Press to quickly scroll through each option. Note: 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 60 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 61 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 62: 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 Entering a predetermined calibration curve requires at least two data pairs. Each data Note: pair requires a concentration value and the absorbance value for the given concentration.
  • Page 63 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 64: 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 65 User-Entered Calibration, continued . Press to select the new resolution, then press READ/ENTER ZERO/SCROLL to accept. “S0” will appear on the display. READ/ENTER 4. Press . The current concentration value for S0 will appear on the READ/ENTER display. 5. To edit the S0 value, press .

  • Page 66: Exiting The Calibration Routine

    User-Entered Calibration, continued 10. When all calibration data has been reviewed or edited, “ADD” will appear in the display. 11. Press to add more calibration points, or press twice to READ/ENTER MENU return to the measurement mode. When a factory calibration curve has been edited, the “calibration adjust” icon will Note: appear in the display.

  • Page 67: Retrieving The Factory Calibration

    User-Entered Calibration, continued 3. Press to select the point to delete (e.g., S0 or S1 or S2). Press ZERO/SCROLL READ/ENTER 4. The left digit will flash. Press until “dEL” appears. (“dEL” will ZERO/SCROLL appear after the numeral 9.) 5. Press to delete.

  • Page 68: Maximum/Minimum Displayed Value

    User-Entered Calibration, continued 4. Press the key to select dFL and restore the instrument to the READ/ENTER factory default calibration. For meters with factory-calibrated ranges or methods, Standard Calibration Adjust Note: (SCA) will be disabled when a user-entered method is programmed into the meter. To turn SCA back on, restore the meter to factory default calibration.
  • Page 69 0.000 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 70 2—28...

  • Page 71: 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 72 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—30...
  • Page 73 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 74 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 75: 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 76 2—34...

  • Page 77: 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 •...
  • Page 78 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 79: 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 80: 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 81 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 82 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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