Hach Hardness (Calcium) Reagent Set
The Hach Hardness (Calcium) reagent set is designed to determine Calcium Hardness by EDTA Digital Titrator titration Method.
Features
- Range: 10-160 mg/L as CaCO₃
- Approximately 40-100 tests
- Powder pillows, standard solution, and titration cartridge
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Overview
The Hach Hardness (Calcium) reagent set is designed to determine Calcium Hardness by EDTA Digital Titrator Titration Method. The sample is made alkaline (pH 12-13) with potassium hydroxide to precipitate magnesium as magnesium hydroxide. CalVer 2 Indicator is added and combines with any calcium to form a pink-red color. As EDTA is added, it reacts with the free calcium ions present. When no free calcium ions remain, the EDTA then removes the calcium complexed with the indicator, causing a color change to blue.
- Range: 10-160 mg/L as CaCO3
- (100) CalVer 2 indicator powder pillows
- (1) 100 mL potassium hydroxide standard solution, 8.00 N
- (1) EDTA titration cartridge, 0.0800 M
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Hardness (calcium), EDTA method, 10 - 160 mg/L, 100 tests
$83.90
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