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Indoor and Built Environment, Vol. 8, No. 5, 287-292 (1999)
DOI: 10.1177/1420326X9900800503

A Bench-Top Microchamber Method for Measuring Formaldehyde Emission from Wood-Based Panel Products

C.W.F. Yu

Building Research Establishment, Indoor Environment Division, Watford, UK

D.R. Crump

Building Research Establishment, Indoor Environment Division, Watford, UK

R.W. Squire

Building Research Establishment, Indoor Environment Division, Watford, UK

In response to concerns about the possible adverse health effects caused by formaldehyde emission from wood-based products, the wood panel products industry has developed and produced lower emission materials over the past 15 years. There is a need for a reliable and inexpensive method in the industry to measure formal dehyde emission from these products that can be used on a routine basis and can provide data comparable to the environmental chamber test prescribed in the Euro pean pre-standard ENV 717-1. A 2.4-litre microchamber test has been developed in the UK, at the Building Research Establishment, as a bench-top method for measuring formaldehyde emission from wood-based materials. Microchamber tests of newly manufactured boards that were preconditioned for 28 days showed good correlation with the steady-state values obtained from the 1-m3 chamber tests determined in accordance with the ENV 717-1 standard. The airflow rate, the ratio of air change to material loading in the chamber and the amount of exposed edges were shown to affect the mea surement of emission rates.

Key Words: Microchamber test • Formaldehyde emission • Wood-based panel products • European standardisation


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