Gastec 230 Quick-measuring Detector tubes Methyl Iodide CH3I (0.5~108ppm)

Name: Gastec 230 Quick-measuring Detector tubes Methyl Iodide CH3I (0.5~108ppm)
Brand: Gastec

ຜູ້ຜະລິດGastec(ເບິ່ງສິນຄ້າອື່ນໆຂອງຍີ່ຫໍ້ນີ້)

Model230

ຕິດຕໍ່

ຈຳນວນ

ການຊຳລະເງິນທີ່ປອດໄພ

ການຮັບປະກັນຄຸນນະພາບ

ປ່ຽນ ແລະ ສົ່ງຄືນງ່າຍ

ມີບໍລິການຈັດສົ່ງ

Indicator: 2 to 20ppm
Measuring Range:
+ 0.5 to 1ppm, Number of Pump Strokes 4
+ 1 to 20ppm , Number of Pump Strokes 2
+ 20 to 46ppm , Number of Pump Strokes 1
+ 46 to 108ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Gray
Reaction Principle: CH3I + I2O5 + V2O5 + H2SO4 → I2
Coefficient of Variation: 5% (for 1 to 20ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Catalog

Manual

Performance

Measuring Range	0.5 to 1ppm	1 to 20ppm	20 to 46ppm	46 to 108ppm
Number of Pump Strokes	4	2	1	1/2
Correction Factor	0.5	1	2.3	5.4
Sampling Time	1.5 minutes per pump stroke
Detecting Limit	0.2ppm (n=4)
Colour Change	White → Gray
Reaction Principle	CH3I + I2O5 + V2O5 + H2SO4 → I2 I2 + 3,3,5,5-Tetramethylbenzidine ｢ｪ Reaction Products
Coefficient of Variation	5% (for 1 to 20ppm)
Shelf Life	2 Year
Corrections for temperature & humidity	Temperature correction is necessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.

Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change colour by itself to

Chlorine	1/1	+ (Two layers)	Brown (turns pale blue after a few minutes)
Nitrogen dioxide	1/1	(Two layers)	Pink
Methyl bromide	30 ppm	No	No
Dichloromethane	50 ppm	No	No
Carbon dioxide	1%	No	No

Calibration gas generation

Diffusion tube method

TLV-TWA	TLV-STEL	Explosive range
2 ppm (2014)	-	-

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