INST.48 Index GENERAL INFORMATION ..........3 Introduction to Palintest Photometers ......3 Kit Contents ............. 4 Instrument Layout ............ 6 BACKGROUND INFORMATION ........7 Introduction to Colorimetric Measurement ....7 Blanks and Samples ..........9 Taking a Reading ............9 Care and Maintenance ..........
This booklet describes the best way to use Palintest products, and provides instructions for the range of water tests that can be performed using this instrument.
Kit Contents These instructions are designed for use with the following instruments :- Compact Ammonia + Meter Compact Ammonia Duo Meter The kits contain :- Compact Ammonia + Compact Ammonia + Meter Instructions 16 mm Cuvette Adaptor Reagents...
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Compact Ammonia Duo Compact Ammonia Duo Meter Instructions 16mm Cuvette Adapter Crushing Rods Test Cuvette Brush Photometer Cuvettes Reagents Ammonia No. 1 Tablet (Indophenol) Ammonia No. 2 Tablet (Indophenol) For re-ordering reagents and accessories, please see Section 6.
BACKGROUND INFORMATION Introduction to Colorimetric Measurement Palintest tests are based on measuring the intensity of colours produced by Palintest reagents and using Palintest photometers to measure that intensity of colour. This is colorimetry and can be defined as any technique used to evaluate an unknown colour in reference to known colours.
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Palintest photometers calculate and then display the test results directly in milligrams per litre (mg/l) of the test factor, by comparing the amount of absorbed light to the calibration data programmed into the instrument.
Blanks and Samples Palintest photometers use a BLANK to set the instrument and a SAMPLE to take the reading. The blank setting is held in memory. It is not necessary to reset the blank each time a reading is taken if the water samples are similar and the conditions of use are the same.
Care and Maintenance The handling of the colorimeter cuvettes is important to ensure continuing accuracy. Scratches, finger-prints and water droplets on the cuvette or inside the light chamber can cause inaccurate results. It is imperative that the cuvettes and light chamber are clean and dry. The glassware must be clean and defect-free.
8 Keep the instrument in a clean, dry place when it is not in use. Keep it on a clean, dry bench away from chemicals, place it in a storage cupboard or keep it in a carrying case. Viewing the Instrument Memory To view the previous results (10 results are stored within the instrument memory), hold the ‘menu’...
To change the test selected, press the MENU key until the required test appears on the display. The ranges in each test refer to the lower limit of detection to the highest value meeting the analytical performance standard. * = Only available on the Compact Ammonia Duo Meter.
To use the adaptor :- The adaptor allows the use of 16 mm Tubetests in the Compact Ammonia +/Ammonia Duo. Insert the adaptor (shown below) into the test cuvette holder. It can only be inserted in one way (the small...
Ammonia Wavelength – 465nm Method – Nessler Method Range - Nes 15N = 0.06 - 15.0 mg/l N 1 Remove the cap of the Tubetests Ammonia/15N (Nessler) Cuvette and add 5.0 ml of sample by using the syringe. Cap cuvette and invert three times to mix.
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Nes 50N = 0.5 - 50.0 mg/l 1 Remove the cap of the Tubetests Ammonia/50N (Nessler) Cuvette and add 1.0 ml of sample by using the syringe. Cap cuvette and invert three times to mix. 2 Use this cuvette to Blank the instrument 3 Add 12 drops of Tubetests Ammonia (Nessler) Reagent.
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Nes 100N = 1.0 - 100.0 mg/l 1 Remove the cap of the Tubetests Ammonia/15N (Nessler) Cuvette and add 0.5 ml of sample by using the syringe. Cap cuvette and invert three times to mix. 2 Use this cuvette to Blank the instrument 3 Add 12 drops of Tubetests Ammonia (Nessler) Reagent.
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Wavelength – 620nm Method – Indophenol Method Range - Ind 1N = 0.02 - 1 mg/l N 1 Fill test cuvette with sample to the 10 ml mark. 2 Use this cuvette to Blank the instrument 3 Add one Ammonia No 1 tablet and one Ammonia No 2 tablet, crush and mix to dissolve.
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Ind 12N = 0.06 - 12.0 mg/l N 1 Remove Tubetests Ammonia/12N/50N (Indophenol) Cuvette and add 1.0 ml of sample by using the syringe. Cap cuvette and invert three times to mix. 2 Use this cuvette to Blank the instrument 3 Add one Tubetests Ammonia tablet, crush and mix to dissolve.
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Ind 50N = 0.1 - 50.0 mg/l N 1 Remove Tubetests Ammonia/12N/50N (Indophenol) Cuvette and add exactly 0.2 ml of sample using the syringe. Swirl cuvette to mix. 2 Use this cuvette to Blank the instrument 3 Add one Tubetests Ammonia tablet, crush and mix to dissolve.
Liability Under no circumstances shall Palintest Ltd be liable for loss of life, property, profits or other damages incurred through the use or misuse of their products.
Error 8 indicates a fault with one of the optics components, and requires service assistance. Error 9 indicates not enough light – follow ‘Cleaning the Optics’ routine. If the problem persists, contact your local Palintest Branch or distributor.
Technical Services Department. Servicing and Warranty Palintest Photometers are guaranteed for a period of two years from the date of purchase, excluding accidental damage or damage caused by unauthorised repair or misuse.
TROUBLESHOOTING 1 Nessler's reagent is toxic. Handle with care. This reagent is for use in professional water testing applications only. 2 Nessler's reagent is sensitive to air. Replace cap when not in use. 3 Ammonia concentrations can be expressed in a number of different ways.
Used cuvettes must always be treated using a proper waste disposal system. A cuvette disposal service is available through Palintest Ltd (UK only). The cuvettes must not be reused as they are designed for single use only. Compliance...
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