TAPPI T 247 : CM 83
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
CALCIUM IN PULP
27-07-2024
12-01-2013
Is for the volumetric analysis by ethylene diamine tetraacetic acid (EDTA) titration of traces of acid soluble calcium in ashed pulp. Alternative methods for calcium which are less time consuming are flame photometric methods and particularly use of the atomic absorption spectrophotometer. Typically this determination is made on the filtrate from the acid insoluble ash as determined in TAPPI T 224 "Acid Insoluble Ash in Pulp". Any calcium present as calcium silicate in the acid insoluble material will be be determined.
| DocumentType |
Standard
|
| PublisherName |
Technical Association of the Pulp & Paper Industry
|
| Status |
Superseded
|
| SupersededBy |
| TAPPI T 244 : 2011 | ACID-INSOLUBLE ASH IN WOOD, PULP, PAPER, AND PAPERBOARD |
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