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ISO 4793

Laboratory sintered (fritted) filters; Porosity grading, classification and designation

Số trang: 7
Ngày phát hành: 1980-10-00

Liên hệ
Filters are graded according to their pore size index in one of the eight classes specified. This is applicable to laboratory filters made of glass, vitreous silica, ceramics, metals and plastic materials. Annex A specifies a method for determination of pore size index. Annex B and C concern with a procedure for assessing uniformity of filters and for determination of air permeability.
Số hiệu tiêu chuẩn
ISO 4793
Tên tiêu chuẩn
Laboratory sintered (fritted) filters; Porosity grading, classification and designation
Ngày phát hành
1980-10-00
Trạng thái
Có hiệu lực
Tiêu chuẩn tương đương
BS 1752 (1983-12-30), IDT * GB/T 11415 (1989), NEQ * NF B35-016 (1974-01-01), IDT * PN-B-13045-01 (1989-06-16), IDT * PN-B-13045-02 (1990-12-18), IDT * UNE 43343 (1985-12-15), IDT * NEN-ISO 4793 (1981), IDT * NP-2324 (1987), IDT * NS 4539 (1982), MOD * UNI ISO 4793 (1984), IDT * UNI ISO 4793:1984 (1984-02-28), IDT * STN 70 4850 (1987-02-02), NEQ * CSN 70 4850 (1988-01-01), NEQ * NEN-ISO 4793:1981 en (1981-06-01), IDT
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Lịch sử ban hành
ISO 4793 (1980-10)
Từ khóa
Classification * Classification systems * Designations * Dimensions * Filters * Fritted materials * Glass * Glassware * Graduations * Laboratory glassware * Laboratory ware * Permeability * Pores * Porosity * Sintered products * Testing * Tests
Số trang
7