User manual HANNA INSTRUMENTS HI 3811

[. . . ] Instruction Manual SIGNIFICANCE AND USE Alkalinity is the quantitative capacity of a water sample to neutralize an acid to a set pH. This measurement is very important in determining the corrosive characteristics of water due primarily to hydroxide, carbonate and bicarbonate ions. Other sources of alkalinity can be from anions that can be hydrolyzed such as phosphates, silicates, borates, fluoride and salts of some organic acids. [. . . ] · Read off the milliliters of titration solution from the syringe scale, and multiply by 300 to obtain mg/L (ppm) CaCO3. acidic and an acidity test must be carried out (see HI 3820 ­ Hanna Acidity Test Kit). · Take the titration syringe and push the plunger completely into the syringe. Insert the tip into HI 3811-0, and pull the plunger out until the lower edge of the plunger seal is on the 0 mL mark of the syringe. · Place the syringe tip into the cap port of the plastic vessel and slowly add the titration solution dropwise, swirling to mix after each drop. Continue adding titration solution until the solution in the plastic vessel turns yellow. · Read off the milliliters of titration solution from the syringe scale and multiply by 300 to obtain mg/L (ppm) CaCO3. x 300 = CaCO 3 Low Range Determinations If results are lower than 100 mg/L, the precision of the test can be improved as follows. Rinse the vessel with water sample, fill to the 15 mL mark and replace the cap. To obtain the result for both Phenophtalein and Total Alkalinity multiply the values on the syringe scale by 100. Note: Push and twist pipet tip onto tapered end of syringe ensuring an air-tight fit. Dear Customer, Thank you for choosing a Hanna Product. Please read the instructions carefully before using the chemical test kit. It will provide you with the necessary information for correct use of the kit. SPECIFICATIONS 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 damage, notify your Dealer or the nearest Hanna office immediately. Each kit is supplied with: · Phenolpthtalein Indicator, 1 bottle (10 mL) with dropper; · Bromophenol Blue Indicator, 1 bottle (10 mL) with dropper; · HI 3811-0, 1 bottle (120 mL); · 2 calibrated vessels (10 and 50 mL); · 1 calibrated syringe with tip. [. . . ] Standard Methods for the Examination of Water and Wastewater, 18th Edition, 1992, pages 445-446. PRINTED IN ITALY INSTRUCTIONS READ ALL THE INSTRUCTIONS BEFORE USING THE TEST KIT LOOK AT THE BACK PAGE FOR THE ILLUSTRATED PROCEDURE Determination of Phenophtalein Alkalinity · Remove the cap from the small plastic vessel. Rinse the plastic vessel with water sample, fill to the 5 mL mark and replace the cap. 07/02 HEALTH AND SAFETY The chemicals contained in this test kit may be hazardous if improperly handled. Read Health and Safety Data Sheets before performing the test. ISTR3811R4 HI 3811 ALKALINITY TEST KIT 1 PHENOLPHTHALEIN ALKALINITY 2P 3 5 mL sample 4 TOTAL ALKALINITY 2T 15 mL sample [. . . ]