The Hardness Of The Water Analysis Kit Titrant (Degrees French) for Measuring the Content of Cal

الوصف

Agent reagent for measuring the hardness of water in degrees French. Each drop french corresponds to a degree. Mode of use Simple: Apply in the test tube 5 ml of water; with the first drop, the water will turn red. Pour a few drops of each time and shake the specimen. Count the number of drops that lie down until the water from red to green. The number of drops will with the degrees of hardness. Hardness of water: up to 7 °F: Very soft. Of 7 °F to 14 °F: Soft. Of 14 °F to 22 °F: approximately lasts. The 22 °F to 32 °F: Moderately hard. Of 32 °F to 54 °F: lasts. More than 54 degrees: Very Hard.