Formaldehyde Vapor Monitor

Method:

The formaldehdye monitor badge contains a chemically activated solid absorbant. The analysis is done by Liquid Chromatography.

Reference Method of Analysis:

OSHA Method 64

Newly Improved:

The new method was developed for the purpose of measuring greater sensitivity. In June 1999, it was tested and approved by Japanese Ministry of Land and Transportation. Highly recommended and used for indoor airquality testing in Japan.

Formaldehyde Monitor Pouch

Specifications
OSHA Exposure Limit	1.0 ppm for an 8 hour period (PEL) 5.0 ppm for a 15 minute (STEL)
Recommended Sampling Time	15 minutes to more than 8 hours.
Minimum Level of Quantitation	0.1 micrograms per sample. This is equivolent to less than 0.01 ppm for an 8 hour period and 0.2 ppm for 15 minutes.
Interferences	Alcohols, aldehydes, and ketones will not interfere. No interferences are known.
Sampling Rate	56 ml/minute
Accuracy	Overall System Accuracy with 95% confidence. Limits: 0.2% at 1.0 ppm for 8 hours. 13.0% at 5.0ppm for 15 minutes.
Effects of Temperature	Less than 10% for each 10°C change from 24°C.
Effects of Humidity	No effects detected from 30% Relative Humidity to 85% Relative Humidity at 24°C.
Storage Conditions	Pre-Exposure: Minimum shelf-life is one year prior to use. There are no special storage required. For optimal results, store the badge away from sources of formaldehyde. Post-Exposure: Analysis after exposure should be done within 2 weeks.