CHROMAIR
SYSTEM
·       Immediate, on-site results				·   Immediate response for short-term
·       Easy-to-read color change				exposure measurements
·       Highly sensitive and selective				·   Patented design minimizes effects of
·       Exposure data read directly from badge				humidity and velocity
·       Measure TWA exposure				·   Light-weight and cost effective for
				personnel and area monitoring
Principle of Operations
The ChromAir badge is a colorimetric direct-read monitor. 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. 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 badge and color comparator is based on exposure dose [parts per million times hour
(ppm•hr)]. To determine the average concentration, locate the highest cell with a color change
and divide the corresponding dose level (ppm•hr) by the sampling time in hours (hr).
EXAMPLE: If the sampling time is 2 hours and the badge reads 40 ppm•hr, the average concentration
is determined by: 40 ppm•hr/2hr. Therefore, the time weighted average concentration is 20 ppm.
PART #	ANALYTE	RANGE (ppm•hr)			INTERFERENCES
380020	Acetone	20 - 24,000			NH3, MEK, MIBK, MPK
380003	Ammonia	4 - 300			RNH2
380008	Carbon Monoxide	10 - 525			Alkenes, H2, H2S
380004	Chlorine	0.4 - 13			Br2, I2, HCl
380007	Formaldehyde	0.3 - 12			Acrolein
380017	Glutaraldehyde	0.04 – 0.95			None Known
380009	Hydrogen Sulfide	1 -  240			None Known
380018	Mercury	0.125 – 1.6			Strong Oxidizers
380020	Methyl Ethyl Ketone	18 – 21,600			NH3, Acetone, MIBK, MPK
380020	Methyl Isobutyl Ketone	16 – 19,200			NH3, MEK, Acetone, MPK
380010	Ozone	0.08 – 1.6			H2O2, NO2
Color Comparators
For higher resolution and accuracy, the ChromAir badges may be used with the ChromAir color
comparators. The color scales on the color comparator identically match the colors formed on the
ChromAir badge. Available for following ChromAir badges:
PART#	ANALYTE		RANGE (ppm•hr)
384006	Carbon Monoxide		10 – 630
384001