Hach POCKET COLORIMETER II Instruction Manual
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Hach POCKET COLORIMETER II Instruction Manual

Analysis systems
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59576-88
™
POCKET COLORIMETER
II
ANALYSIS SYSTEMS
INSTRUCTION MANUAL
Reactive Phosphorous
Phosphonates
© Hach Company, 2006. All rights reserved. Printed in the U.S.A.
te/dk 9/06 2ed

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  • Page 1 59576-88 ™ POCKET COLORIMETER ANALYSIS SYSTEMS INSTRUCTION MANUAL Reactive Phosphorous Phosphonates © Hach Company, 2006. All rights reserved. Printed in the U.S.A. te/dk 9/06 2ed...
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  • 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 Phosphorus, Reactive ..................1—15 Using Powder Pillows (USEPA accepted for reporting)....... 1—16 Using AccuVac®...
  • Page 4 Table of Contents, continued Sampling and Storage ..................1—35 Interferences ......................1—35 Summary of Method..................1—36 Reagents and Apparatus ..................1—37 Phosphonates ......................1—39 Sampling and Storage ..................1—47 Accuracy Check....................1—47 Standard Calibration Adjust Method..............1—49 Interferences ......................1—49 Summary of Method..................1—51 Reagents and Apparatus ..................1—52 Instrument Operation ..................2—3 Key Functions......................2—3 Menu Selections ....................2—4...
  • Page 5 Table of Contents, continued Error Codes ......................2—9 Error Messages ....................2—9 Standard Calibration Adjust ................2—13 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..............
  • 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: ± 0.015 Abs Filter bandwidth: 15 nm Wavelength: 600 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 lbs) ®...
  • 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: Phosphorus, Reactive

    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 * Adapted from Standard Methods for the Examination of Water and Wastewater.

  • Page 16: Using Powder Pillows (Usepa Accepted For Reporting)

    Phosphorus, Reactive, continued Using Powder Pillows (USEPA accepted for reporting) HRS MIN SEC HRS MIN SEC Fill a 10-mL cell to the Add the contents of one Wait at least 2 min. (but 10-mL line with sample. PhosVer 3 Powder Pillow to less than 10 min.) for full the cell (the prepared color development before...
  • Page 17 Phosphorus, Reactive, continued Fill a second sample cell Press the key to Place the blank into POWER with 10 mL of sample (the turn the meter on. the cell holder. blank). Wipe off any liquid The arrow should indicate Cover the sample cell with or fingerprints.
  • Page 18 Phosphorus, Reactive, continued Press: Place the prepared Press: ZERO/SCROLL READ/ENTER sample into the cell holder The meter will show The meter will show with the diamond mark “- - - -” “- - - -” , followed by , followed by the facing the keypad.
  • Page 19 Phosphorus, Reactive, continued Table 1 To convert reading Multiply by from 3– mg/L P 0.747 mg/L PO 3– mg/L P 0.326 mg/L PO Subtract the reagent To convert results to Note: other units, use the blank from the reading for true concentration.

  • Page 20: Using Accuvac® Ampuls (Usepa Accepted For Reporting)

    Phosphorus, Reactive, continued Using AccuVac® Ampuls (USEPA accepted for reporting) ® Fill a 10-mL sample cell Fill a PhosVer Place an ampule cap ® to the 10-mL line with Phosphate AccuVac Ampul securely over the tip of the sample (the blank). Cap. with sample.
  • Page 21 Phosphorus, Reactive, continued HRS MIN SEC HRS MIN SEC Wait at least 2 minutes Press the key to Place the blank into the POWER (but no more than turn the meter on. cell holder. 10 minutes) for full Wipe off any liquid or The arrow should indicate Note: color development before...
  • Page 22 Phosphorus, Reactive, continued Press: Place the ampule Press: ZERO/SCROLL READ/ENTER containing the prepared The instrument will turn on, The meter will show sample into the cell holder. “- - - -” and the display will show , followed by the Cover the ampule with the “- - - -”...
  • Page 23 Phosphorus, Reactive, continued Table 2 To convert reading Multiply by from mg/L P 0.747 3– mg/L PO mg/L P 0.326 3– mg/L PO To convert results to other units, use conversion Table 2 Subtract the reagent Note: blank from the reading for true concentration.

  • Page 24: Sampling And Storage

    Phosphorus, Reactive, continued Sampling and Storage Collect sample in plastic or glass bottles that have been cleaned with 1:1 Hydrochloric Acid Solution and rinsed with deionized water. Do not use commercial detergents containing phosphate for cleaning glassware used in phosphate analysis. Best results are obtained when samples are analyzed as soon as possible after collection.

  • Page 25: Interferences

    Phosphorus, Reactive, continued 4. Analyze each standard addition sample as described in the procedure. The phosphate concentration should increase 0.2 mg/L for each 0.1 mL of standard added. Standard Solution Method Use a 3.00 mg/L phosphate standard solution in place of the sample. Perform the procedure as described above.
  • Page 26 Phosphorus, Reactive, continued For highly turbid or colored samples, add the contents of one Phosphate Pretreatment Powder Pillow to 25 mL of sample. Mix well. Use this solution (instead of the blank) to zero the instrument. The following may interfere when present in concentrations exceeding those listed below Table 3 Aluminum...

  • Page 27: Method Performance

    Phosphorus, Reactive, continued Table 3 (Continued) Silica Greater than 50 mg/L Silicate Greater than 10 mg/L Turbidity (large May cause inconsistent results because the acid in the powder amounts) or color pillow may dissolve some of the suspended particles and because of variable desorption of orthophosphate from the particles.

  • Page 28: Summary Of Method

    Phosphorus, Reactive, continued Summary of Method Orthophosphate reacts with molybdate in an acid medium to produce a phosphomolybdate complex. Ascorbic acid then reduces the complex, giving an intense molybdenum blue color. Reagents and Apparatus Required Reagents Description Unit Cat. No. ®...
  • Page 29 Phosphorus, Reactive, continued Optional Reagents Drinking Water Quality Control Standard, mixed parameter, inorganics containing fluoride, nitrate, sulfate, and phosphate ......... 500 mL ..28330-49 Hydrochloric Acid Standard Solution, 6.0 N (1:1)..... 500 mL ..884-49 Phosphate Pretreatment Powder Pillows ........50/pkg ..14501-99 3–...
  • Page 30 Phosphorus, Reactive, continued Optional Apparatus Description Unit Cat. No. ® AccuVac Snapper ................each ..24052-00 Ampule Breaker Kit ................each ..21968-00 pH Indicator Paper, 1 to 11 pH ..........5 rolls/pkg ..391-33 ™ sens 1 Basic Portable pH Meter, with electrode...................each ..51700-10 Pipet, 2-mL, serological..............each ..

  • Page 31: Digestion For Total Phosphorus

    Digestion for Total Phosphorus Method 8190 (Also called Organic and Acid Hydrolyzable) For water, wastewater, and seawater. Acid Persulfate Digestion Method* USEPA accepted for reporting wastewater analysis** Measuring Hints • If the expected total phosphate concentration is greater than 3 mg/L, dilute the sample and apply the appropriate dilution factor to the results.
  • Page 32 Digestion for Total Phosphorus, continued Measure 25 mL of Add the contents of one Add 2.0 mL of 5.25 N sample into a 50-mL Potassium Persulfate Sulfuric Acid Solution. Erlenmeyer flask using a Powder Pillow. Swirl to mix. graduated cylinder. If only inorganic acid Note: hydrolyzable phosphorus...
  • Page 33 Digestion for Total Phosphorus, continued Place the flask on a Cool the sample to room Add 2.0 mL of 5.0 N hot plate. Boil gently for temperature. Sodium Hydroxide Solution. 30 minutes. Swirl to mix. Sample should be Use the 1-mL Note: Note: concentrated to less than...
  • Page 34 Digestion for Total Phosphorus, continued Use deionized water rinsings from the flask to adjust the Note: volume. Results of the reactive phosphorus test at this point will Note: include the organic phosphate plus the orthophosphate and the acid-hydrolyzable (condensed) phosphate. The organic phosphate concentration is determined by subtracting results of an acid hydrolyzable phosphorus test from this result.

  • Page 35: Sampling And Storage

    Digestion for Total Phosphorus, continued Sampling and Storage Collect samples in plastic or glass bottles that have been acid-cleaned with 1:1 Hydrochloric Acid Solution and rinsed with deionized water. Do not use commercial detergents containing phosphate for cleaning glassware used in this test.

  • Page 36: Summary Of Method

    Digestion for Total Phosphorus, continued Summary of Method Phosphates present in organic and condensed inorganic forms (meta-, pyro- or other polyphosphates) must be converted to reactive orthophosphate before analysis. Pretreatment of the sample with acid and heat provides the conditions for hydrolysis of the condensed inorganic forms.

  • Page 37: Reagents And Apparatus

    Digestion for Total Phosphorus, continued Reagents and Apparatus Required Reagents Description Unit Cat. No. Potassium Persulfate Powder Pillows ................100/pkg ..2451-99 Sodium Hydroxide Solution, 5.0 N........100 mL* MDB ..2450-32 Sulfuric Acid Solution, 5.25 N ..........100 mL* MDB ..2449-32 Required Apparatus Cylinder, graduated, 25-mL ...............
  • Page 38 Digestion for Total Phosphorus, continued Optional Apparatus Description Unit Cat. No. Cylinder, graduated, 50-mL ...............each ..508-41 Flask, Erlenmeyer, 125-mL..............each ..505-43 Hot Plate, 4-inch diameter, 120 Vac ..........each ..12067-01 Hot Plate, 4-inch diameter, 240 Vac ..........each ..12067-02 Pad, cooling, 4 x 4 inches ..............each ..18376-00 pH Indicator Paper, 1 to 11 pH ..........5 rolls/pkg ..391-33 ™...

  • Page 39: Phosphonates

    Check conversion efficiency by running a longer digestion and seeing if the readings increase. 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 * Adapted from Blystone, P., Larson, P., A Rapid Method for Analysis of Phosphonate...
  • Page 40 Phosphonates, continued Table 1 Expected Sample Concentration (mL) (mg/L PO 0-2.5 0-12.5 Choose a sample Pour the sample into a 0-25 size from Table 1 . Use a plastic 50-mL volumetric 0-125 graduated cylinder or pipet flask. Dilute to the mark to measure the sample.
  • Page 41 Phosphonates, continued Fill a mixing bottle to the Fill a sample cell with 10 Add the contents of one shoulder with the diluted mL of diluted sample (the Potassium Persulfate for sample (approximately blank) from the flask. Phosphonate Powder Pillow 25 mL).
  • Page 42 Phosphonates, continued Insert the ultraviolet After digestion, turn the Fill a 10-mL sample cell lamp into the mixing bottle. power supply off and to the 10-mL mark with the Turn the power supply on remove the lamp. digested sample. and digest the sample for Caution: Mixing bottle may Cool the sample to Note:...
  • Page 43 Phosphonates, continued HRS MIN SEC HRS MIN SEC Add the contents of one Wait at least 2 minutes Press the POWER ® PhosVer 3 Powder Pillow to (but no more than to turn the meter on. each sample cell (blank and 10 minutes) for full The arrow should indicate sample).
  • Page 44 Phosphonates, continued Place the blank into Press: Place the prepared ZERO/SCROLL the cell holder with the sample into the cell holder. The meter will show diamond mark facing “- - - -” Wipe off any liquid or followed Note: the keypad. “...
  • Page 45 Phosphonates, continued Table 2 Sample Multiplier Volume Press READ/ENTER. The meter will show “- - - -” , followed by the results in mg/L phosphate. Multiply this value by the appropriate multiplier in Table 2 to obtain the true phosphate concentration. 1—45...
  • Page 46 Phosphonates, continued Results may be expressed in terms of active phosphonic acid by multiplying the result by the appropriate conversion factor in Table 3 Table 3 Phosphonate Type Conversion Factor Bayhibit AM PBTC 2.84 Dequest 2000, Wayplex NTP, ATMP 1.050 Dequest 2010, Wayplex HEDPA-60, HEDP 1.085 Dequest 2041, EDTMPA...

  • Page 47: Sampling And Storage

    Phosphonates, continued Sampling and Storage Collect samples in plastic or glass bottles that have been cleaned with 1:1 Hydrochloric Acid Solution and rinsed with deionized water. Do not use commercial detergents containing phosphate for cleaning glassware used in phosphate analysis. Best results are obtained when samples are analyzed as soon as possible after collection.
  • Page 48 Phosphonates, continued ® 3. Use a TenSette Pipet to add 0.1 mL, 0.2 mL, and 0.3 mL of standard, respectively, to the three water samples. Dilute to the 50-mL mark with deionized water and mix each thoroughly. 4. Analyze each standard addition sample as described in the procedure. The displayed phosphate concentration should increase 1.0 mg/L for each 0.1 mL of standard added (due to a dilution factor of 10 in the calibration).

  • Page 49: Standard Calibration Adjust Method

    Phosphonates, continued Standard Calibration Adjust Method To perform a standard calibration adjustment using the 2.0 mg/L phosphate standard (= 20 mg/L due to the dilution), or using an alternative concentration, see Standard Calibration Adjust on page 2—13 Preparation of 2 mg/L Phosphate Standard Solution 1.
  • Page 50 Phosphonates, continued Calcium 5000 mg/L CDTA 100 mg/L Chloride 5000 mg/L Chromate 100 mg/L Copper 100 mg/L Cyanide 100 mg/L (Increase the UV digestion to 30 minutes.) Diethanoldithio- 50 mg/L carbamate EDTA 100 mg/L Iron 200 mg/L Nitrate 200 mg/L 250 mg/L Orthophosphate 15 mg/L...

  • Page 51: Summary Of Method

    Phosphonates, continued Phosphites and React quantitatively. Meta- and polyphosphates do not organophos-phorus interfere. compounds Silica 500 mg/L Silicate 100 mg/L Sulfate 2000 mg/L Sulfide Interferes at all levels Sulfite 100 mg/L Thiourea 10 mg/L Highly buffered samples May exceed the buffering capacity of the reagents or extreme sample pH and require sample pretreatment.

  • Page 52: Reagents And Apparatus

    Phosphonates, continued Reagents and Apparatus Required Reagents Phosphonate Reagent Set (100 tests) ........24297-00 Includes: ® (2) PhosVer 3 Phosphate Reagent Powder Pillows (1) Potassium Persulfate Powder Pillows Required Apparatus Description Unit Cat. No. Bottle, mixing ..................6/pkg ..439-06 Cylinder, graduated, 5-mL..............each ..508-37 Flask, volumetric, 50-mL, Nalge ............each ..
  • Page 53 Phosphonates, continued Optional Reagents Description Unit Cat. No. Hydrochloric Acid Standard Solution, 6.0 N (1:1)..... 500 mL ..884-49 Phosphate Standard Solution, 100 mg/L as PO ..... 946 mL ..14368-16 ™ Phosphate Standard Solution, Voluette Ampule, 50 mg/L as PO , 10-mL ............
  • Page 54 Phosphonates, continued Optional Apparatus, continued Description Unit Cat. No. UV Lamp (for ac power supply)............each ..26710-00 UV lamp (for 9 V battery power supply)..........each ..26708-00 UV lamp power supply for 26708-00 lamp (requires 9 V batteries) ..............each ..26706-00 Replacement Parts Batteries, alkaline, AAA ..............4/pkg ..
  • Page 55 Section 2 Instrument Manual 2—1...
  • Page 56 2—2...

  • Page 57: 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 58: 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 59: 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 60: 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 61 Instrument Operation, continued Figure 1 Battery Installation 2—7...
  • Page 62 2—8...

  • Page 63: 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 64 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 65 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 66 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 67: 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 68 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 69: 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 70 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 71: 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 72 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 73 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 74: 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 75 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 76: 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 77 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 78: 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 79: 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 80: 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 81 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 82: 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 83 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 84 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 85 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 86 2—32...
  • Page 87 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 88 2—34...

  • Page 89: 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 90 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 91: 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 92: 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 93 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 94 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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