苯氣體檢測管121SP C6H6
Benzene No.121SP

C6H6

Performance

Measuring Range

0.5 to 10 ppm

Number of Pump Strokes

Correction Factor

SamplingTime

1.5 minutes per pumpstroke

DetectingLimit

0.2 ppm (n=3)

ColorChange

White → Brown

ReactionPrinciple

2C6H6+ HCHO → C6H5CH2C6H5 + H2O
C6H5CH2C6H5 + H2S2O7 → Condensation poiymer

Coefficient ofVariation10% (for 0.5 to 3ppm)， 5% (for 3 to 10 ppm)ShelfLife2 YearsCorrectionsfor
temperature & humidityUnnecessaryStore the tubes at cool and darkplace.
Possible coexisting substances and theirinterferences(NOTE)

Substance

Concentration

Interference

Change color by itself

Hexane

500 ppm

No effect

No discoloration

Toluene

100 ppm

No effect

No discoloration

Xylene

100 ppm

No effect

No discoloration

Aromatichydrocarbons other than benzene are trapped in the brown layer inthe pretreatment tube.If the pretreatment reagent is entirelyconsumed (whole brown layer turns to dark brown)，ahigher reading will be given.

河南省鑫屬實業(yè)有限公司發(fā)布與 苯氣體檢測管121SP C6H6 相關的產(chǎn)品
醋酸芐基氣體檢測管147 Amtyl acetate 氨氣檢測管3L Ammonia NH3 苯氣體檢測管121SL C6H6 Benzene 苯氣體檢測管121S Benzene C6H6 苯檢測管121 Benzene C6H6 醋酸丁酯氣體檢測管142L Butyl acetate

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河南省鑫屬實業(yè)有限公司

苯氣體檢測管121SP C6H6 Benzene No.121SP

C6H6

苯氣體檢測管121SP C6H6
Benzene No.121SP