Titrant Water Filters Hardness Analysis Kit (French Degrees) for Measuring Limestone, Set of 6

Titrant Set of 6 pieces; the operation is simple to insert 5 ml of water into the measuring cup at the first drop, the same will become red color add little by little more drops and shake the measuring cup with each added drop, count the inserted drops until the change of the reagent occurs from red to blue; the kit contains 3 tubes, and 6 bottles of 10 ml each Before use, read the instructions inside the cardboard; the water hardness analysis kit comes complete with test tube With the water to be tested, fill the test tube up to 5 ml, enter one drop at a time of Titrant and shake with each added drop until the colour changes from red to blue; the number of drops used indicates the hardness in French degrees; one drop corresponds to a French degree; example 50 drops are equal to 50° French Water hardness: up to 7°f:very sweet; 7°F to 14°F:sweet; 14°F to 22°F:medium hard; 22°F to 32°F:discreetly hard.32°F to 54°F:hard; over 54°F:very hard, Manufacturer: Filtri Acqua Italia