User manual HANNA INSTRUMENTS HI 38033

[. . . ] Instruction Manual SPECIFICATIONS Range 0 to 30 gpg CaCO3 Smallest Increment 1 gpg CaCO3 Analysis Method EDTA titration Sample Size 10 mL Number of Tests 100 Case Dimensions 235x175x115 mm (9. 2x6. 9x4. 5") Shipping Weight 457 g (16. 1 oz) INSTRUCTIONS READ ALL THE INSTRUCTIONS BEFORE USING THE TEST KIT · Remove the cap from the plastic vessel. Rinse the plastic vessel with the water sample, fill to the 10 mL mark 10 mL and replace the cap. [. . . ] 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: · Buffer Solution pH 10. 2±0. 2, 1 bottle with dropper (30 mL); · Calmagite Indicator, 1 bottle with dropper (10 mL); · HI 38033-0 EDTA Solution, 2 bottles (2x75 mL); · 1 calibrated plastic vessel (20 mL) with cap; · 1 plastic pipette (1 mL). Note: Any damaged or defective item must be returned in its original packing materials. Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in water causing the precipitation were later found to be primarily calcium and magnesium. At the present time, water hardness is a quantitative measure of these ions in the water sample. Now it is also known that certain other ion species, such as iron, zinc and manganese, contribute to the overall hardness of water. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes. The Hanna hardness test kit makes monitoring easy and quick. The compact size provides the versatility to use the kit anywhere and the design makes the kit easy to handle. Note: 1 gpg (grains per gallon) CaCO3 is equivalent to 17 ppm CaCO3 (where ppm - parts per million - is equivalent to mg/L). x5 · Add 1 drop of Calmagite Indicator through the cap port and mix as described above. The solution becomes a redviolet color. HEALTH AND SAFETY The chemicals contained in this test kit may be hazardous if improperly handled. [. . . ] This color change from red to blue is the endpoint of the titration. PRINTED IN ITALY · Fill the plastic pipette with HI 38033-0 EDTA Solution and insert the tip into the cap port of the plastic vessel. Add the solution drop by drop, swirling to mix after each drop, while keeping an accurate count of the number of drops being added to the solution in the vessel. · Continue adding titration solution until the solution in the plastic vessel becomes purple. [. . . ]