It is often interesting to know whether a polyurethane foam of doubtful origin contains blowing agents which could adversely affect the ozone layer. This is particularly relevant when buildings are to be demolished and the blowing agents within the building insulation may potentially be released to the atmosphere.
We have recently evaluated a small hand-held device, which can supposedly detect whether halogen-containing blowing agents have been used in the manufacture of a polyurethane foam. It is claimed that whilst the instrument can determine the presence of volatile halogenated materials in general, it cannot differentiate between CFCs, HCFCs and HFCs.
The video shows the use of this instrument and the reaction of the sensing mechanism to gases derived from a variety of foams. The foams were simply cut into small pieces and placed in a glass jar onto which was secured a gas-tight lid. The foam was briefly shaken and the jar left for a few minutes. The jar lid was then removed and the sensor placed within the air space above the foam sample.
It is evident that the instrument can detect the presence of the halogenated blowing agents and it is noticeable that there is no reaction to foams blown with either carbon dioxide or one of the pentanes.
This instrument may be of some value to those in the demolition industry where environmental concerns regarding the method of insulation disposal are being considered.
The instrument is a Model RD99 and is available from:
Kane International Ltd
Kane House
Swallowfield
Welwyn Garden City
AL7 1JG
Tel: 01707 384810
Click here to find out more
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