Hardness Standards & Reagents
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H-22417-32
Hach alkali solution for calcium and magnesium
H-121-53
Hach calcium standard 1000 mg/l
H-22418-32
Hach calcium/magnesium indicator solution for hardness
C-6F
Calmagite aqueous solution, 0.1%
H-205-56
Hach EDTA standard solution, 0.0200N
H-22297-26
Hach EGTA solution in 50 ml self-contained dropping bottle and for calcium and magnesium hardness determination
E-50
Eriochrome Black T mixture, 1% with NaCl, hardness indicator
E-28
Eriochrome Blue Black R mixture, 1% with NaCL
H-424-32
Hach hardness 1 pH 10 buffer solution
H-424-49
Hach hardness 1 pH 10 buffer solution
H-424-53
Hach hardness 1 pH 10 buffer solution
H-425-32
Hach hardness 2 indicator solution
H-425-49
Hach hardness 2 test solution
H-5
Hardness buffer, APHA for hardness, Procedure 2340C
H-851-99
Hach ManVer® 2 hardness indicator powder pillow for 50 ml sample
H-962-99
Hach UniVer® 3 hardness reagent powder pillow
H-6
Hardness standard, 100 ppm as CaCO3
H-6A
Hardness standard, 1000 ppm as CaCO3
H-23199-00
Hach total hardness reagent set for range 0-4 mg/l
H-24476-00
Hach hardness reagent set for low range, 0-2500 mg/l