1、STD.BSI BS EN IS0 172-ENGL L998 Lb24bbS 073LqtYb 370 BRITISH STANDARD Plastics - Phenol-formaldehyde mouldings - Detection of free ammonia (IS0 172:1978) ICs 83.140.99 BS EN IS0 172: 1998 Implementing AmendmentNo. 1 to BS 2782 :Part 4 : Method 451L : 1980 (?WWlbWSuLeBSaS BS EN IS0 172:1998) not publ
2、ished sepamtey nni n-m U- NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW u BS EN IS0 172:1998 Issue 2, October 1998 Foreword This British Standard is technicaiy identical to International Standard IS0 172: 1978 Plastics - Pherwl-formaldehyde muld.i.-llgs - Detection of free a
3、mmonia. In 1998 the European Committee for Standardization (CEN) accepted IS0 1721978 as European Standard EN IS0 172:1998. A British Standard does not purport to include ail the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance
4、with a British Standard does not of itself confer immunity from legal obligations. Amendments issued since publication O BSI 1998 ID* I 10253 October implementing European Standard I 1998 ISBN O 580 11301 9 STD.BS1 BS EN IS0 172-ENGL 1998 W Lb211bbS 07311188 143 E Isene 2 2 Issue 1, October 1998 BS
5、EN IS0 172:1998 Page issue EN IS0 title page 1 ii 1 Summary of pages The following table identifies the current issue of each page. Issue 1 indic b) full details necessary for the identification of the sample; c) the method used for reducing powder; d) the presence or absence of free volatile bases.
6、 the mouldings to ammonia or other Q BSI 1998 1 BS EN IS0 172:1998 BSI 389 Chiswick High Road London w4 4AL Issue 2, October 1998 BSI - British Standards Institution BSI is the independent national body responsible for preparing British Stanads. It presents the UK view on standasds in Europe and at
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