HANNA instruments HI 38023 Manual
Contents
1. Instruction Manual HI 38023 Total Chlorine Extended Range Test Kit E HANNE instruments www hannainst com Dear Customer Thank you for choosing a Hanna Product Please read the instruction sheet carefully before using the test kit It will provide you with the necessary information for correct use of the kit If you need additional information do not hesitate to e mail us at tech hannainst com Remove the chemical test kit from the packing material and examine it carefully to make sure that no damage has occurred during shipping If there is any noticeable dam age notify your Dealer or the nearest Hanna office immediately Each kit is supplied with e Potassium lodide Solution 1 bottle with dropper 30 ml e Sulfamic Reagent packets 100 pcs e Starch Indicator 1 bottle with dropper 25 ml e Thiosulfate Reagent 1 bottle 100 ml e 1 calibrated plastic vessel 50 ml e 1 syringe 1 ml with tip e plastic pipette 1 ml e 1 spoon Note Any damaged or defective item must be returned in its original packing materials PRINTED IN ITALY 12 00 ISTR38023 SPECIFICATIONS Range 10 to 200 mg L ppm as Chlorine Smallest Increment 10 mg L as Chlorine Analysis Method Drop count titration Sample Size I ml Number of Tests 100 Case Dimensions 235x175x115 mm 9 2x6 9x4 5 Shipping Weight 547 g 19 3 oz SIGNIFICANCE AND USE The chlorination of water supplies and polluted waters is used mainly t2. e exactly En 1 0 mL of sample L with the syringe push the plunger completely into the syringe and insert the tip into sample Pull the plunger out until the lower edge of the seal is on the 0 0 mL mark of the syringe Insert the syringe into the vessel and push the sample out until the lower edge of the seal is on the 1 0 ml mark 5 Add 4 drops of Starch Indicator and swirl gently to mix If chlorine is present the solution will turn a blue color oo T Using the 1 mL plastic pipette add Thiosulfate Reagent drop by drop swirling after each drop while keeping an accurate count of the drops being added to the solution 7 Continue adding Thiosulfate Reagent until the solution changes from blue to colorless 8 To obtain the concentration in mg L or ppm of total chlorine in your sample multiply by 10 the number of drops of Thiosulfate Reagent used to turn the solution from blue to colorless drops x 10 mg L Total Chlorine Standard methods for the Examination of Water and Wastewater 20 Ed 1998 APHA AWWA WEF HEALTH AND SAFETY The chemicals contained in this kit may be hazardous if improperly handled Read the relevant Health and Safety Data Sheet before performing this test
3. o destroy or deactivate disease producing microorganisms It also serves to improve the quality of drinking waters as chlorine reacts with ammonia iron manganese sulfide and some organic substances Nevertheless high amounts of chlorine will produce adverse effects like formation of compounds which are potentially carcinogenic e g chloroform or harmful to aquatic life e g chloramines Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effect Note mg L is equivalent to ppm parts per million CHEMICAL REACTION An iodometric titration method is used The water sample is treated with potassium iodide and strongly acidified with acid The amount of iodine generated is equivalent to the chlorine in the sample the concentration of iodine is calculated by titration with thiosulfate ions that reduce iodine back to iodide ions READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT 1 Fill the calibrated vessel with tap water up to the 50 mL mark the 50 al residual chlorine in tap water will not affect the test 2 Add 5 drops of Potassium lodide Solution and swirl gently to mix Add 1 packet of Sulfamic Reagent and use the spoon to mix and dissolve 4 Use the syringe to add 1 mL of your sample to the vessel dispensing the sample below the solution level in the ves sel Note To measur
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