Water hardness is caused almost entirely by calcium and magnesium ions. Other di- and trivalent metals have a similar effect, but usually are not present in high enough concentration in potable waters to cause problems. Hardness increases soap consumption in laundries and causes scale in boilers. With Hach Water Quality Test Strips, technicians in the field can test many samples in only a few minutes, and make immediate evaluations on-site. No measuring, set-up, clean-up, or chemical handling are necessary. Hach test strips are also used in laboratories all over the world for pre-test screening-to detect the presence of materials that might interfere with lab testing. Strips are individually wrapped for maximum portability and stability. Contains 1,000 tests.
Hach水質分析試紙用於全球各地的實驗室進行量測前的快速篩檢，以檢測是否有可能干擾實驗室量測的物質。 試紙單獨包裝，以達到最大的方便度和穩定度。 包含 250 個測試。

Parameter : Hardness, Total (as CaCO₃)
Range : 0 - 425 ppm
Range 2 : 0 - 25 gpg
Smallest Increment : Intervalos de: 0, 1.5, 3, 7, 15, 25 gpg
Smallest Increment Steps Steps : 0, 25, 50,
120, 250, 425 ppm
0, 1.5, 3, 7, 15,
25 gpg

關鍵字 : 水中硬度 檢測 試紙, , 水質 硬度 檢測