Filter blocks, slabs and plates, of paper pulp
Part of: 48 — Paper and paperboard; articles of paper pulp
954602 · 1993-10-20 — Internal advice; classification of industrial depth filters; paper pulp; cellulose; diatomaceous earth; article of paper pulp; slab, plate, block.
A sample has been submitted to this office for examination. FACTS: The submitted sample, designated as SWK supra 100, is a depth filter imported by Seitz Filtration, Incorporated, from Germany. The sample is composed of approximately 45 percent diatomaceous earth and 45 percent cellulose. The remaining 10 percent is comprised of cotton linters and resin. Descriptive literature accompanying the sample suggests that the diatomaceous earth is used as a replacement for or in lieu of asbestos. In addition, the literature indicates that the filter is principally used for liquid and industrial…
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