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Thiourea Analysis

Thiourea Analysis, Total:11 items.

In the international standard classification, Thiourea Analysis involves: Welding, brazing and soldering, Metalliferous minerals, Non-ferrous metals, Electrical accessories.

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Thiourea Analysis

GB/T 10574.4-1989 Tin-lead solders--Determination of bismuth content--Thiourea spectrophotometric method
GB/T 17418.4-1998 Methods for analysis of noble metals in geochemical samples--Determination of iridium content-Preconcentration by thiourea-Catalytic spectrophotometric method
GB/T 17418.2-1998 Methods for analysis of noble metals in geochemical samples--Determination of platinum and rhodium content-Preconcentration by thiourea-Catalytic polarographic method
GB/T 17418.3-1998 Methods for analysis of noble metals in geochemical samples--Determination of palladium content-Preconcentration by thiourea-Graphite furnace atomic absorption spectrophotometric method

Professional Standard - Machinery, Thiourea Analysis

JB/T 7774.3-1995 Method for chemical analysis of silver zinc oxide electrical contact materials Determination of bismuth content by thiourea spectrophotometry
JB/T 7776.6-1995 Method for chemical analysis of silver cadmium oxide electrical contact materials Determination of bismuth content by thiourea spectrophotometry
JB/T 7776.5-2008 Test method for chemical analysis of silver-cadmium oxide electric contact material. Part 5: Determination of bismuth content
JB/T 7774.3-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material.Part 3:Determination of bismuth content

Professional Standard-Ships, Thiourea Analysis

CB/T 3905.15-2005 Method for chemical analysis of tin-base bearing alloy - Part 15: Thiourea photometric method for the determination of bismuth content
CB/T 3905.15-1999 Determination of bismuth content by thiourea spectrophotometric method for chemical analysis of tin-based bearing alloys

Professional Standard - Aviation, Thiourea Analysis

HB 5422.7-1989 Method for chemical analysis of copper alloy Potassium iodide-thiourea absorbance photometry for determination of bismuth content