GASTEC

Gas or Vapour to be Measured Chemical Formula	Gastec Tube No. & Name		Measuring Range (ppm)	No.of Pump Strokes	Shelf Life (year)	Note		TLV- TWA,C (ACGIH) (ppm)
Stoddardsolvent	128	Stoddardsolvent	50-8000 mg/m³	1	3	-		100
Styrene C6H5CH:CH2	124	Styrene	500-1500	1/2	3	-		20
			20-500	1
			10-20	2
	124L	Styrene	25-100	1	3	-
			2-25	4
	153	Methyl isobutyl ketone	0.075-0.9%	1	3	T
Sulphur dioxide SO2	5H	Sulphur dioxide	4-8%	1/2	3	-		2
			0.5-4%	1
			0.05-0.5%	2-10
	5M	Sulphur dioxide	1800-3600	1/2	3	T
			100-1800	1
			20-100	4
	5L	Sulphur dioxide	100-200	1/2	3	-
			5-100	1
			2.5-5	2
			1.25-2.5	4
	5La	Sulphur dioxide	30-60	1	3	-
			2-30	2
			1-2	4
			0.5-1	8
	5LC	Sulphur dioxide	10-25	1	3	T
			0.25-10	2
			0.1-0.25	4
	5Lb	Sulphur dioxide	5-10	1	3	-
			0.2-5	2
			0.1-0.2	4
			0.05-0.1	8
	45S	Hydrogen sulphide ,sulphur dioxide	10-20	1/2	3	+
			0.5-10	1
			0.25-0.5	2
	80	Acid gases	1.5-30	2	2	-
Sulphuric aicd	35	sulphuric acid	0.5-5mg/m³	10	2	T		-

T:Temp Correction

H:Humidity Correction

*:Refrigerator Store

Mesh:Correction Factor/Chart

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