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These test methods cover two procedures for the qualitative determination and identification of the mineral constituents of filled and coated papers.
Formerly under the jurisdiction of Committee D06 on Paper and Paper Products, these test methods were withdrawn in 2011 without replacement. Based on discussions beginning over two years ago, plus an administrative ballot within D06 regarding the future of D06, it has become clear that member support for maintaining the D06 committee is lacking. It was agreed that many of the existing D06 methods should be withdrawn. The method is a former TAPPI Standard Method, is currently a TAPPI Useful Method (UM), and is in ballot within TAPPI to be readopted as a TAPPI Standard Test Method.
1.1 These test methods cover two procedures for the qualitative determination and identification of the mineral constituents of filled and coated papers.
1.2 Due to the similarity in chemical composition and physical size and shape of some of the various possible constituents contained in a given paper specimen, more precise, quantitative methods may at times be required for positive identification.
1.3 It is recommended that one become thoroughly familiar with these test methods by analyzing paper samples of known mineral component content.
1.4 The test methods appear as follows:
|Method A—Qualitative Chemical Analysis||4 to 11|
|Method B—Microscopical Identification||12 to 19|
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1—These test methods are technically equivalent to TAPPI T 421.
Note 1—These test methods are technically equivalent to TAPPI T 421.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D585 Practice for Sampling and Accepting a Single Lot of Paper, Paperboard, Fiberboard, and Related Product
D586 Test Method for Ash in Pulp, Paper, and Paper Products
D921 Test Method for Titanium Dioxide in Paper
D1030 Test Method for Fiber Analysis of Paper and Paperboard
TAPPI StandardsT421 Qualitative (Including Optical Microscopic) Analysis of Mineral Filler and Mineral Coating of Paper