硫化物检测管201LSulphideSulphideNO.201LPerformanceMeasuringRange0.002to0.02mgSamplingTime45secondsper1pompstrokeDetectingLimit0.0002mgColourChangeWhite→BrownReactionPrincipleGusgenerationtube:Sulphides+H2SO4→H2SDetectortube:H2S+Pb(CH3COO)2→PbSShelfLife3YearsCorrecti***fortemperature&humidityUnnecessaryCoefficientofVariation5%(for0.002to0.02mg)Possiblecoexistingsubstancesandtheirinterferences(NOTE)SubstanceConcentrationInterferenceChangecolourbyitselftoChlorideionNoNoChromateionNoNoCarbonateionNoNo)