Gastec 13L Quick-measuring Detector tubes Carbon disulphide CS2 (0.1~8.1ppm)

Manufacturer: Gastec
Model: 13L
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Specifications
Manufacturer Info

Indicator: 0.1 ~ 3.0 ppm
Measuring Range:
+ 0.1 ~ 3.0 ppm, Number of Pump Strokes 2
+ 3.0 ~ 8.1 ppm, Number of Pump Strokes 1
Sampling Time: 3 minutes per pump stroke
Colour Change: Bluish purple → White
Reaction Principle: CS2 + CrO3 + H2S2O7 → SO2 + CO2, CS2 + CrO3 + H2S2O7 → SO2 + CO2
Coefficient of Variation: 10% (for 0.1 to 1.0 ppm), 5% (for 1.0 to 3.0 ppm)
Nr. of tests: 5
Pump: GV-100S/110S

Details

Performance

Measuring Range

0.1 to 3.0 ppm

3.0 to 8.1 ppm

Number of Pump Strokes

Correction Factor

Sampling Time

3 minutes per pump stroke

Detecting Limit

0.05 ppm (n=2)

Colour Change

Bluish purple → White

Reaction Principle

CS2 + CrO3 + H2S2O7 → SO2 + CO2
SO2 + I2 + H2O → HI + H2SO4

Coefficient of Variation

10% (for 0.1 to 1.0 ppm), 5% (for 1.0 to 3.0 ppm)

Shelf Life

2 Years

Corrections for temperature & humidity

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

Chloroform	150ppm	+	White
Carbon tetrachloride	50ppm	+	White
o-Dichlorobenzene	20ppm		No(20ppm)
Dichloromethane	100ppm	+	White
Tetrachloroethylene	80ppm	+	White
Trichloroethylene	10ppm	+	White
Hydrogen sulphide	50ppm	+	No(50ppm)
Acetone	750ppn	No	No
Ethyl acetate	200ppm	No	No
Toluene	40ppm	No	No
n-Hexane	100ppm	No	No
Methanol	300 ppm	No	No
Methyl ethyl ketone	250ppm	No	No