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3800 ChromAir Monitoring Badges

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The ChromAir badge is a colorimetric direct read monitor and a color comparison chart. It relies on the principle of diffusion, therefore it requires no pump to operate. Unlike traditional diffusion tubes, the patented design of the ChromAir badge provides a short and constant diffusion path irrespective of the sampling time or concentration of the contaminant. This unique feature provides accurate results immediately and throughout the sampling period.

The ChromAir monitor provides the user with six exposure levels*. Most ChromAir badges indicate from 1/10 to 2 times the time weighted average for an eight hour work period. The scale** printed on the badges and color comparators is based on exposure dose (parts per million time hour (ppm x hr). To determine the average concentration, the user locates the highest cell with a color changes and divides the corresponding dose level (ppm x hr) by the sampling time in hours (hrs). If the sampling time is 2 hours and badge reads 40 ppm x hr, the average concentration is 20 ppm.

For higher resolution and wider range, the ChromAir badge may be used in conjunction with the ChromAir color comparator. The color scales on the color comparators identically match the colors formed on the ChromAir badges.

*50 per box

Analyte	Range (ppm x hr)	Min. Detectable Concentration in 8 hours***	Humidity Range	Interferences	Catalog No.
Acetone	20-24,000	2.5 ppm	15-95%	NH3, MEK, MIBK, MPK	380020-10
Ammonia	4-300	0.5 ppm	15-90%	RNH2	380003-10
Carbon monoxide	10-525	1.25 ppm	19-85%	Alkenes, H2, H2S	380008-10
Chlorine	0.4-13	0.05 ppm	35-85%	Br2, I2	380004-10
Formaldehyde	0.3-12	0.04 ppm	30-80%	None Known	380007-10
Glutaraldehyde	STEL (15 min)	0.04-0.95 ppm	25-85%	None Known	380017-10
Hydrogen sulfide	1-240	0.13 ppm	33-80%	None Known	380009-10
Mercury	0.125-1.6 mg/m3 x hr	0.02 mg/m3	10-80%	Strong Oxidizers	380018-10
Methyl ethyl ketone	18-21,600	2.25 ppm	15-95%	NH3, acetone, MIBK, MPK	380020-10
Methyl isobutyl ketone	16-19,200	2.0 ppm	15-95%	NH3, MEK, Acetone, MPK	380020-10
Ozone	0.08-1.6	0.01 ppm	20-90%	H2O2, NO2**	380010-10

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