ISO 2221:1972
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Formaldehyde solutions for industrial use Limit test for inorganic chlorides
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
14-05-2019
English, French
01-12-1972
Important note : Users cannot be edited or removed once added to your Multi user PDF.
The method, as specified, is applicable when the required limit is not greater than 0,05 % and not less than 0,0005 %. If the required limit lies outside that range, the mass of the test portion should be changed. The principle of the test consists in comparison of the turbidity obtained by the addition of silver nitrate solution to a solution of the sample, in the presence of nitric acid, with that similary produced from a chloride solution of known concentration.
| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 04 036 : 1983 | Identical |
| BS 2942:1957 | Similar to |
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