Gastec Passive Dosi-Tubes: Top Choice in Selangor, Malaysia, Kuala Lumpur (KL), Klang Inter Products Marketing Sdn Bhd

Description

Gastec Colour Dosimeter Tubes (Dosi-tubes) provide reliable, on-the-spot Time-Weighted Average (TWA) monitoring of worker exposure to gases and vapours. The system is simple-to-use and easy-to-read, with no need for a pump, chart, or laboratory analysis. The Dosi-tube system allows an operator to evaluate the level of exposure over a long time period such as a working shift.

The system consists of Gastec Dosi-tubes and a tube holder (part number 810-710). The pre-scored ends of the tube are simply snapped off and the tube inserted into a tube holder. Air diffuses passively through the tube and reacts with the detecting reagent within, giving a colour change result that is indicated on the printed scale. The tube holder can either be attached in a worker’s breathing zone or installed in work areas to act as an area monitor.

Using a simple equation, the Dosi-tube system produces an average concentration of exposure over a set period of time – commonly known as a Time Weighted Average (TWA). To calculate the ppm level simply read the printed calibrated scale on the tube for exposure measurement in parts-per-million-hours (ppm-hours), and divide the reading by the number of hours sampled.

Note: When measuring carbon dioxide, mount the tube holder on the worker’s waist rather than in their breathing zone. This will avoid overstating CO2 levels due to exhalation.

Description	Pack Size	Part Number
Dosi-Tube Holder	3	710
Tube Breaker	Each	722

Gas or Vapour to be Measured	Measuring Range (ppm)	Gastec Tube No.
Acetaldehyde (Dosi tube)	1.2-360	152D
Acetaldehyde (Dosi tube)	4-1,200	151D
Acetaldehyde (Dosi tube)	0.1-20	91D
Acetic acid (Dosi tube)	0.5-100	81D
Acetic anhydride (Dosi tube)	0.3-60	81D
Acetone (Dosi tube)	5-1,500	151D
Acetone (Dosi tube)	1.4-420	152D
Ammonia (Dosi tube)	0.1-10	3DL
Ammonia (Dosi tube)	2.5-1,000	3D
Benzene (Dosi tube)	2.4-600	122DL
1,3-Butadiene (Dosi tube)	1.3-200	174D
Carbon dioxide (Dosi tube)	0.02-12%	2D
Carbon monoxide (Dosi tube)	1.04-2,000	1D
Carbon monoxide (Dosi tube)	0.4-400	1DL
Chlorine (Dosi tube)	0.08-100	8D
Cumene (Dosi tube)	3.4-850	122DL
trans-1,2-Dichloroethylene (Dosi tube)	3.9-600	174D
Dimethylamine (Dosi tube)	1.9-750	3D
N,N-Dimethylethylamine (Dosi tube)	4-1600	3D
Ethanol (Dosi tube)	100-25,000	112D
Ethyl benzene (Dosi tube)	2.8-700	122DL
Ethylene (Dosi tube)	1.56-240	174D
Formaldehyde (Dosi tube)	0.1-20	91D
Formic acid (Dosi tube)	0.55-110	81D
Furfural (Dosi tube)	0.3-60	91D
Hydrazine (Dosi tube)	1.6-650	3D
Hydrogen Chloride (Dosi tube)	1.8-180	132D
Hydrogen chloride (Dosi tube)	1-100	14D
Hydrogen cyanide (Dosi tube)	1-200	12D
Hydrogen fluoride (Dosi tube)	1-100	17D
Hydrogen fluoride (Dosi tube)	2.5-250	14D
Hydrogen peroxide (Dosi tube)	0.5-40	32D
Hydrogen sulphide (Dosi tube)	0.2-200	4D
Isoprene (Dosi tube)	2.6-400	174D
Methy ethyl ketone (Dosi tube)	2-600	152D
Methyl ethyl ketone (Dosi tube)	0.125-25	91D
Methyl ethyl ketone (Dosi tube)	6.5-1,950	151D
Methyl isobutyl ketone (Dosi tube)	11.5-3,450	151D
Methyl isobutyl ketone (Dosi tube)	4-1200	152D
Methylamine (Dosi tube)	0.19-19	3DL
Nitric acid (Dosi tube)	0.8-80	14D
NItric acid (Dosi tube)	0.32-32	17D
Nitrogen dioxide (Dosi tube)	0.01-3.0	9DL
Nitrogen dioxide (Dosi tube)	0.1-30	9D
Styrene (Dosi tube)	26-6,500	122DL
Sulphur dioxide (Dosi tube)	10-600	5DH
Sulphur dioxide (Dosi tube)	0.2-100	5D
Tetrachloroethylene (Dosi tube)	1.5-150	132D
Tetrachloroethylene (Dosi tube)	3-150	133D
Toluene (Dosi tube)	2-500	122DL
Trichloroethylene (Dosi tube)	3-300	132D
Triethylamine (Dosi tube)	5.3-2,100	3D
Trimethylamine (Dosi tube)	0.23-23	3DL
Vinyl Chloride (Dosi tube)	1.56-240	174D
Xylene (Dosit tube)	3.4-850	122DL

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