Download
Share
Print this page
Hanna Instruments HI96769C Instruction Manual
  1. Manuals
  2. Brands
  3. Hanna Instruments Manuals
  4. Measuring Instruments
  5. HI 96769C
  6. Instruction manual

Hanna Instruments HI96769C Instruction Manual

Anionic surfactants ism
Hide thumbs Also See for HI96769C:

Advertisement

Quick Links

Download this manual
HI96769C
Anionic Surfactants ISM

Advertisement

loading
Need help?

Need help?

Do you have a question about the HI96769C and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Hanna Instruments HI96769C

Summary of Contents for Hanna Instruments HI96769C

  • Page 1 HI96769C Anionic Surfactants ISM...
  • Page 2 If you need additional technical information, do not hesitate to e‑mail us at tech@hannainst.com or view our worldwide contact list at www.hannainst.com. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
  • Page 3 PRELIMINARY EXAMINATION ..................... GENERAL DESCRIPTION ..................... ABBREVIATIONS ....................... SPECIFICATIONS ....................... PRECISION AND ACCURACY ....................PRINCIPLE OF OPERATION ....................FUNCTIONAL DESCRIPTION ....................ERRORS AND WARNINGS ....................GENERAL TIPS FOR AN ACCURATE MEASUREMENT .............. STARTUP .......................... MEASUREMENT PROCEDURE ..................... VALIDATION PROCEDURE ....................CALIBRATION PROCEDURE ....................
  • Page 4 Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please contact your local Hanna Instruments Office. Each HI96769 Ion Selective Meter is supplied complete with: • Sample Cuvettes and Caps (2 pcs.) •...
  • Page 5 HI96769 is an auto diagnostic portable microprocessor meter that benefits from Hanna Instruments’ years of experience as a manufacturer of analytical instruments. It has an advanced optical system based on a special tungsten lamp and a narrow band interference filter that allows most accurate and repeatable readings.

  • Page 6: Required Reagents

    Range 0.00 to 3.50 mg/L (as SDBS) Resolution 0.01 mg/L Accuracy ±0.04 mg/L ±3 % of reading @25 °C (77 °F) Light Source Tungsten lamp Light Detector Silicon Photocell with narrow band interference filter @610 nm Adaptation of the USEPA method 425.1 and Standard Methods for the Method Examination of Water and Wastewater, 20 edition, 5540C, Anionic Sur‑...
  • Page 7 Precision is how closely repeated measurements agree with each other. Precision is usually expressed as standard deviation (SD). Accuracy is defined as the nearness of a test result to the true value. Although good precision suggests good accuracy, precise results can be inaccurate. The figure explains these definitions.
  • Page 8 The optical system of Hanna Instruments’ HI96 series colorimeters is based on special subminiature tungsten lamps and narrow‑band interference filters to guarantee both high performance and...

  • Page 9: Instrument Description

    INSTRUMENT DESCRIPTION 1) GLP/ key 2) CAL CHECK key 3) ZERO/CFM key 4) READ /TIMER key 5) ON/OFF key 6) Liquid Crystal Display (LCD) 7) Cuvette alignment indicator 8) Cuvette holder KEYPAD DESCRIPTION • ON/OFF: to turn the meter on and off. •...
  • Page 10 DISPLAY ELEMENTS DESCRIPTION 1) The measuring scheme (lamp, cuvette, detector), appears during different phases of zero or reading measurement 2) Error messages and warnings 3) The battery icon shows the charge state of the battery 4) The hourglass appears when an internal check is in progress 5) Status messages 6) The chronometer appears when the reaction timer is running 7) The month, day and date icons appear when a date is displayed...
  • Page 11 The instrument shows clear messages when erroneous condition appears. Messages are also displayed when the obtained values are outside expected range. The beeper is playing a beep on errors. a) on zero reading Light High: There is too much light to perform a measurement. Please check the preparation of the zero cuvette.
  • Page 12 Over Range: A flashing value of the maximum concentration indicates an over range condition. The concentration of the sample is beyond the programmed range: dilute the sample and re‑run the test. c) during calibration procedure Standard Low: The standard reading is less than expected. Standard High: The standard reading is higher than expected.
  • Page 13 The instructions listed below should be carefully followed during testing to ensure best accuracy. • For adding the exact amount of sample and deionized water class A pipette to the cuvette it is strongly recommended to use two class A laboratory pipettes. •...
  • Page 14 • Whenever the cuvette is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI731318 or a lint‑free cloth prior to insertion. • Shaking the cuvette can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette.
  • Page 15 • Turn the meter on by pressing ON/OFF. The display briefly shows all tags on. • When the beeper sounds briefly and the LCD displays dashes, the meter is ready. The blinking “ZERO” indicates that the instrument needs to be zeroed first. •...
  • Page 16 • Close the glass vial with its cap and invert to mix. The solution will turn blue. • Add exactly 10 mL of Chloroform reagent. For most accurate results, use a class A glass laboratory pipette is strongly recommended. Alternatively, it is possible to use another clean plastic pipette to fill the vial up to the 10 mL mark.
  • Page 17 Alternatively, wait for 2 minutes leaving the vial capped and undisturbed During this period, the chloroform layer separates from the aqueous layer: the color of the aqueous layer will fade slightly if anionic surfactants are present, while the chloroform layer will turn blue.
  • Page 18 • Close tightly the glass vial with its cap and shake it vigorously for 30 seconds. Note: Block the cap with a finger during shaking. • Press and hold READ /TIMER for three seconds and the display will show the countdown. The beeper is playing a beep at the end of countdown period.
  • Page 19 • If the solution is clouded, you can improve separation between the chloroform and aqueous layers by gently warming the cuvette (for instance by holding the cuvette in the hand). • If the chloroform layer contains some aqueous drops hanging on the cuvette wall, gently swirl or invert the cuvette.
  • Page 20 • Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. • After a few seconds, the display will show “-0.0-”. The meter is now zeroed and ready for measurement. • Remove the cuvette. •...

  • Page 21: Conversion Factors

    • At the end of measurement, the instrument directly displays concentration in mg/L (ppm) of anionic surfactants (MBAS) as SDBS on the LCD. CONVERSION FACTORS The anionic detergent content is expressed as mg/L of SDBS . Convert the reading to mg/L (ppm) of a different anionic detergent concentration (DX) of known molecular weight (MW ), as follows: Reading (mg/L SDBS) x MW...
  • Page 22 Use the validation procedure to ensure that the instrument is properly calibrated. Warning: Do not validate the instrument with any standard solutions other than the Hanna Instruments CAL Check Standards, otherwise erroneous results will be obtained. For accurate validation, please perform test at room temperature: 18 to 25 °C (64.5 to 77.0 °F)
  • Page 23 • Remove the cuvette. • Place the CAL Check Standard HI96769‑11 Cuvette B into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. • Press CAL Check and the lamp, cuvette and detector icons together with “CAL CHECK” will appear on the display, depending on the measurement phase.
  • Page 24 Note: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or ON/OFF keys. Warning: Do not calibrate the instrument with standard solutions other than the Hanna Instruments CAL Check Standards, otherwise erroneous results will be obtained. For accurate validation, please perform test at room temperature: 18 to 25 °C (64.5 to 77.0 °F)
  • Page 25 • Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. • After a few seconds the display will show “-0.0-”. The meter is now zeroed and ready for calibration. The blinking “READ” asks for reading calibration standard. •...

  • Page 26: Date Input

    • After measurement the instrument will show for three seconds the CAL Check Standard value. Note: If the display shows “STD HIGH”, the standard value was too high. If the display shows “STD LOW”, the standard value was too low. Verify that both CAL Check Standards HI96769-11 Cuvettes, A and B are free of fingerprints or dirt and that they are inserted correctly.
  • Page 27 • Press GLP/ to edit the desired month (01‑12). If the key is kept pressed the month number is automatically increased. • When the correct month has been set, press ZERO/CFM or READ /TIMER to confirm. Now the display will show the day blinking. •...

  • Page 28: Last Calibration Date

    In the GLP mode, the last user calibration date can be verified and the factory calibration can be restored. LAST CALIBRATION DATE To display the calibration date: • Press GLP/ to enter GLP mode. The calibration month and day will appear on the main display and the year on the secondary display.
  • Page 29 • Press ZERO/CFM to restore the factory calibration or press GLP/ again to abort factory calibration restore. • The instrument briefly indicates “donE” upon restoration of factory calibration prior to returning to measurement mode. To save battery, the instrument shuts down after 10 minutes of non‑use in measurement mode and after 1 hour of non‑use in calibration mode.
  • Page 30 To replace the instrument’s battery, follow the steps: • Turn the instrument off by pressing ON/OFF. • Turn the instrument upside down and remove the battery cover by turning it counterclockwise. • Extract the battery from its location and replace it with a fresh one. •...

  • Page 31: Recommendations For Users

    If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number from the Customer Service Department and then send it with shipment costs prepaid.
  • Page 32 World Headquarters Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA www.hannainst.com Local Office Hanna Instruments USA 270 George Washington Highway Smithfield, RI 02917 Phone: 800.426.6287 Fax: 401.765.7575 e‑mail: tech@hannainst.com MAN96769 Printed in ROMANIA...