Hanna Instruments HI 3831F Instruction Manual

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instruction manual

Hanna Instruments HI 3831F Instruction Manual Manual pdf 1 page image

SPECIFICATIONSInstruction Manualwww.hannainst.comDear Customer,Thank you for choosing a Hanna Product.Please read the instructions carefully before using thechemical test kit. It will provide you with the necessaryinformation for correct use of the kit.Remove the chemical test kit from the packing material andexamine it carefully to make sure that no damage hasoccurred during shipping. If there is any noticeable dam-age, notify your Dealer or the nearest Hanna officeimmediately.Each kit is supplied with:• 1 Color Comparator Cube;• Reagent 1 (20 mL);• Reagent 2 (15 mL).Note: Any damaged or defective item must be returned inits original packing materials.ISTR3831FR1 10/01 PRINTED IN ITALYHI 3831FFree ChlorineTest KitIn pools and drinking water supplies, chlorination serves tokill or deactivate disease-producing microorganisms. It canalso improve water quality by reacting with ammonia, iron,sulfide and some organic substances. However, an excessiveconcentration of chlorine in water can produce adverseconditions, such as formation of carcinogenic chloroform orother toxins. To maximize the purpose for chlorination andminimize any adverse effects, it is essential to monitor thechlorine levels closely.The Hanna Chlorine Test Kit determines the Free chlorineconcentration in water via a color cube. This makes the testkit practical for field use. No iodine or bromine can bepresent for this test to work properly.Range 0 to 2.5 mg/L (ppm) ChlorineSmallest Increment 0.5 mg/L (ppm) ChlorineAnalysis Method ColorimetricSample Size 5 mLNumber of Tests 50 (average)Case Dimensions 220x145x55 mm (8.7x5.7x2.1")Shipping Weight 176 g (6.6 oz.)SPECIFICATIONSSIGNIFICANCE AND USECHEMICAL REACTIONThe addition of chlorine to water produces hydrochloric andhypochlorous acids. The hypochlorous acid acts as thedisinfectant and bleaching agent. These are known as freechlorine, which is measured by a colorimetric method. Thereaction is buffered at approximately 6.3 pH; in thatcondition DPD (N,N-diethyl-p-phenylenediamine) is immedi-ately oxidized by chlorine producing a reddish color. Thecolor intensity of the solution determines the free chlorineconcentration.INSTRUCTIONSREAD THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT• Add 5 drops of Reagent 1 and 3 drops of Reagent 2 tothe color comparator cube.• Fill the color comparator cube with water sample to the5 mL mark.• Replace the cap and mix by carefully swirling the cubein tight circles and inverting it several times.• Determine which color band best matches the solution inthe vessel and record the results in mg/L (ppm) freechlorine.REFERENCESStandard Methods for the Examination of Water and Waste-water, 18th Edition, 1992, pages 445-446.The chemicals contained in this kit may be hazardous ifimproperly handled. Read Health and Safety Data Sheetbefore performing this test.HEALTH AND SAFETY5 3

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