ISO 172:1978
$13.00
Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia
| Published By | Publication Date | Number of Pages |
| ISO | 1978-08 | 3 |
Specification of a qualitative method of detecting the presence of free ammonia or other volatile bases in phenol-formaldehyde mouldings by the exposure of an indicator paper to the vapour from a moistened powdered sample. It may be used when the absence of free ammonia is a requirement.
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