上海豫東電子科技有限公司
主營產(chǎn)品: 惡臭檢測儀 應(yīng)急檢測箱 水質(zhì)安全檢測箱 水質(zhì)檢測管 紅外測溫儀 紅外熱像儀 |
上海豫東電子科技有限公司
主營產(chǎn)品: 惡臭檢測儀 應(yīng)急檢測箱 水質(zhì)安全檢測箱 水質(zhì)檢測管 紅外測溫儀 紅外熱像儀 |
參考價(jià) | 面議 |
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更新時(shí)間:2017-12-21 13:51:43瀏覽次數(shù):10297
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Performance 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. Possible coexisting substances and their interferences (NOTE)
Performance | |||
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. | |||
Possible coexisting substances and their interferences (NOTE) | |||
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 |