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Water hardness refers to the total concentration of calcium and magnesium ions in a water sample, and it is an important indicator of water quality. This instrument adopts the electrode method for testing, and through extensive experiments, it has been proven that it is compatible withEDTAThe volumetric titration method has the same accuracy and can avoidEDTAThe titration method has many disadvantages, such as cumbersome operation, uncertainty in endpoint determination, and unsuitability for use in turbid and colored water samples.
This instrument is suitable for on-site use in colleges, research institutes, and industrial and mining enterprises, and is used for high-precision measurement of water hardness.
2Technical parameters of the instrument:
2.1. Measurement range:
(a) Water hardness value: 0 ~ 10 mmol/L
Equivalent to other units being: 0 ~ 1000 mg/L(CaCO3)
0 ~ 561mg/L(CaO)
0 ~ 20 mmol/L(Boiler)
0 ~ 401mg/L(Ca)
0 ~100 º fH (French degree)
0 ~56 º dH (German degrees)
0 ~70 º eH (UK degree)
Note: º eH, º dH, and º fH can only be selected for use in WH Link communication software
(b) Temperature range: 0~60.0 ℃
Note: The temperature units are ℃ and ℉, which can be set by oneself.
2.2. resolving power:
(a) Water hardness: 0.01 and 0.1 units of water hardness
(b) Temperature: 0.1 ℃
2.3. accuracy:
(a) Water hardness: ≤ ± 5% FS
(b) Temperature: ≤ ±0.5 ℃
2.4. Automatic temperature compensation range: 5~50 ℃
2.5. Measurement value storage capacity: 99 sets
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