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NEN ISO 172 : 1979

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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

Published date

12-01-2013

Superseded date

01-08-1998

Superseded by

NEN EN ISO 172 : 1998

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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Superseded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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