Replacement Gastec Smoke Test Tubes Pack of 6

£43.90 excl. VAT
£52.68
incl. VAT

SKU - 1193868

GAS501

SKU -

1193868

Order now for 5 day delivery

Description
GASTEC Gas detector tubes

Gas detector tubes

GASTEC gas detector tubes are thin glass tubes with calibration scales printed on them so you can directly read the concentrations of the substances (gases and vapours) to be measured. Each tube contains a particulate matrix (e.g. silica gel, alumina), which binds carefully selected and highly stable detection reagents that are especially sensitive to the target substance to produce a distinct layer of colour change. The tubes are hermetically sealed at both ends.

Currently, over 600 types of target gas can be measured.

Features

On-site measurements can be performed easily by anybody, anytime and anywhere, quickly.
Easy-to-check direct reading possible due to calibrated scale directly printed on the tube
An extensive measuring range can be obtained by adjusting the sampling volume.
For high precision, each production lot is tested and calibrated independently. Each detector tube has its quality control number printed on the tube.
Long shelf-life with excellent long-term stability

Operating environment

Most GASTEC tubes can be used in the temperature range of 0 - 40ºC and relative humidity range of 0- 90%. However, a few tubes have different temperature or humidity ranges. Please refer to the instruction manuals before use.

Gas sampling pump

The handy design GASTEC GV-100 cylinder pump, with an inner capacity of 100mL, weighs only 240g. It is designed for use with almost all GASTEC short-term measurement detector tubes.

Standards

The following table provides an overview and comparison of JIS K 0814 and major international industrial standards.

	Standard / Requirements	JIS K 0804:2022	ISO17621:2015	lUPAC (published in 1982)	ANSl / ISEA 102-1990 (R2015)
Sampling pump	Volume	≦±5%	≦±5mL	≦±5%	≦±5%
	Air leakage	≦3%	≦3mL/min	≦ 3%/min	≦ 3%/min
	Durability	1000 pump strokes	1000 pump strokes	-	100 pump strokes
Detector tube	Obliqueness of the boundary discolouration	≦20%	≦20%	≦20%	≦20%
	Measurement performance	Class A B* ≦15% (Conc. of 33.3% or more of MS*) ≦15 to 25%(Conc. of 20 to 33.3% of MS) ≦25% (Conc. of 20% or less of MS*) (B+U) ≦30% (Conc. of 26.7% or more of MS) ≦30 to 50% (Conc. of 16 to 26.7% of MS) ≦50% (Conc. of 16 % or less of MS) Class B (B+U**)≦50%	U**≦50%	Class A Read value ≦± 25% (1, 2 and 5×MPC**) ≦± 35% (0.5×MPC) Class B Read value ≦± 35% (0.5, 1, 2 and 5×MPC**)	Read value ≦± 25% (1, 2 and 5×MPC**) ≦± 35% (0.5×MPC**)

*B: Bias of the scale reading against the test gas concentration
**U: Expanded uncertainty for a detector tube measurement system (The calculations of Expanded uncertainty are different for each standard.)
***MS: Maximum scale value of the detector tube
****MPC: Maximum permissible concentration, e.g. TLVs (Threshold limit values), etc.

Standards

JIS: Japanese Industrial Standard, JIS K 0804: 2022, “Gas detector tube measurement system ”
ISO: International Organization for standardization, ISO17621: 2015, “Workplace atmosphere - Short term detector tube measurement systems - Requirements and test methods”
lUPAC: International Union of Pure and Applied Chemistry, “Performance Standard for Detector Tube Units used to monitor gases and vapours in working areas”
ANSl / ISEA: American National Standards Institute / Industrial Safety Equipment Association, ANSI / ISEA102-1990 (R2015), “American National Standard for Gas Detector tube Units - Short Term Type for Toxic Gases and Vapors in Working Environments”