Gastec 146 Quick-measuring Detector tubes Isopropyl acetate CH3CO2CH(CH3)2 (10 ~ 500 ppm)

Name: Gastec 146 Quick-measuring Detector tubes Isopropyl acetate CH3CO2CH(CH3)2 (10 ~ 500 ppm)
Brand: Gastec

ຜູ້ຜະລິດGastec(ເບິ່ງສິນຄ້າອື່ນໆຂອງຍີ່ຫໍ້ນີ້)

Model146

ຕິດຕໍ່

ຈຳນວນ

ການຊຳລະເງິນທີ່ປອດໄພ

ການຮັບປະກັນຄຸນນະພາບ

ປ່ຽນ ແລະ ສົ່ງຄືນງ່າຍ

ມີບໍລິການຈັດສົ່ງ

Indicator: 10 ~ 500 ppm
Measuring Range: 10 ~ 500 ppm, Number of Pump Strokes 2
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Blackish brown → Pale blue after few minutes
Reaction Principle: CH3CO2CH(CH3)2+ Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 15% (for 20 to 100 ppm), 10% (for 100 to 500 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Catalog

Manual

Performance

Measuring Range	10 to 500 ppm
Number of Pump Strokes	2
Correction Factor	1
Sampling Time	2 minutes per pump stroke
Detecting Limit	5 ppm (n=2)
Colour Change	Yellow → Blackish brown → Pale blue after few minutes
Reaction Principle	CH3CO2CH(CH3)2+ Cr⁶⁺ + H2SO4 → Cr³⁺
Coefficient of Variation	15% (for 20 to 100 ppm), 10% (for 100 to 500 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

Alcohols	+	Blackish brown then turns to pale blue
Ketones	+	Blackish brown then turns to pale blue
Esters	+	Blackish brown then turns to pale blue

Calibration gas generation

Diffusion tube method

TLV-TWA	TLV-STEL	Explosive range
100 ppm	200 ppm	1.8 to 8%

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