NEN ISO 172 : 1979
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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PLASTICS - PHENOL-FORMALDEHYDE MOULDINGS - DETECTION OF FREE AMMONIA
01-08-1998
12-01-2013
Defines 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 powdered sample. It may be used when the absence of free ammonia is a requirement.
| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 172:1978 | Identical |
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