Gastec 273 溶液中六价铬离子检测管(Cr6 +)(0.5~50 mg/L)
制造商: Gastec Model: 273 - 报价要求
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Indicator: 1 ~ 50 mg/L
Measuring Range: 0.5 ~ 50 mg/L
Sampling Time: 2 minute
Colour Change: White → Yellow
Reaction Principle: Cr6+ + Pb(CH3COO)2 → PbCrO4
Nr. of tests: 10
Measuring Range | 0.5 to 50 mg/L |
Sampling Time | 2 minutes |
Detecting Limit | 0.4 mg/L |
Colour Change | White → Yellow |
Reaction Principle | Cr6+ + Pb(CH3COO)2 → PbCrO4 |
Shelf Life | 3 Years |
Corrections for temperature & humidity | Water temperature correction is necessary |
Store the tubes at cool and dark place. |
Substance | Concentration | Interference | Change colour by itself to |
Cl- | ≧ 20 mg/L | + | No |
CH3COO- | ≧ 20 mg/L | + | No |
NO3- | ≧ 30 mg/L | + | No |
S2- | ≧ 0.5 mg/L | Unclear | Brown ( ≧ 0.5 mg/L ) |
SO42- | ≧ 10 mg/L | + | No |
PO43- | ≧ 5 mg/L | + | No |
(i.e. in solution).
Dissolved sulphide detector tube
211H / 211M / 211 / 211LL
|
Liquid detector tube
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* Adjustment for pH is required when measuring with liquid detector tubes.
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