Gb T 16595 2019 Translated English Of Chinese Standard Gbt 16595 2019 Gb T16595 2019 Gbt16595 2019

This Standard specifies grid patterns that can be used to quantitatively describe surface defects on a circular semiconductor wafer. This Standard applies to silicon wafers of which the nominal diameter is 100 mm ~ 200 mm; it also applies to other semiconductor material wafers.

This Standard specifies procedures for using rectangular coordinates and polar coordinates to establish the front, back, and three-dimensional wafer coordinate systems. This Standard applies to the establishment of wafer coordinate systems with and without pattern. The coordinate system is used to determine and record the exact locations of test results such as defects and particles on the wafer.

This Standard specifies limit indicators and inspection methods for lead (Pb), cadmium (Cd), hexavalent chromium [Cr(VI)], mercury (Hg) in plastic materials. This Standard is applicable to all kinds of plastic materials, masterbatches and their products, including baby products, food contact materials, electronic and electrical products, automobile products, furniture products, and general plastic products.

This Part of GB/T 20671 specifies the principle, instruments and apparatuses, test samples, test procedures, test reports and precision of the method for determining the degree of influence on the physical properties of nonmetallic gasket materials after immersion in the test liquid. This Part applies to the determination of the liquid resistance of Type 1, Type 2, Type 3 and Type 7 materials which are described in GB/T 20671.1-2020.

This Standard stipulates the principle, sampling and sample preparation, reagents, instruments, test procedures and test result of test for neutrality of benzole products. This Standard is applicable to test for neutrality of benzole products, such as crude benzole, which is recovered from coke oven gas; coking benzene, coking toluene and coking xylene, which are obtained from light benzene through hydrogenation and rectification; petroleum benzene, petroleum toluene and petroleum mixed xylene, which are produced from petroleum fraction through catalytic reforming process, etc.

This Standard specifies the classification, technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of rubber antioxidant - polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (hereinafter referred to as rubber antioxidant TMQ).

This Standard specifies product classification, technical requirements, test methods, inspection rules, marking, package, transportation, storage, quality certificate, and ordering form (or contract) contents of platinum ingots. This Standard is applicable to the platinum ingots produced by the platinum-contained raw materials.

This Standard specifies general rules, technical requirements, inspection, testing and test requirements, accompanying documents, marks, packaging, transportation and storage for amusement rides coaster category. This Standard is applicable to amusement rides coaster category.