Standards

GB/T 1774-2009 Active

GB/T 1774-2009 Superfine silver powder

This standard specifies the requirements for ultra-fine silver powder, test methods, inspection rules, and marking, packaging, transportation, storage, and the content of purchase orders (or contracts), etc.
This standard applies to ultra-fine silver powder used in the electronics industry.

Publish Date: 2009-01-05

GB/T 23272-2009 Active

GB/T 23272-2009 Tungsten wire for lighting and electronic equipments

This standard specifies the classification, requirements, test methods, inspection rules, packaging, marking, transportation and storage of tungsten filaments, as well as the content of purchase orders (or contracts).
This standard is applicable to tungsten filaments used in the manufacture of various lighting filaments, grid filaments, brackets, leads, electrodes, springs, vacuum coating heating elements, furnace heating materials, high-temperature components, and so on.

Publish Date: 2009-01-05

GB/T 23273.1-2009 Active

GB/T 23273.1-2009 Methods for chemical analysis of cobalt oxalate—Part 1:Determination of cobalt content—Potentiometric titration method

This part of GB/T 23273 specifies the method for determining the cobalt content in cobalt oxalate.
This part is applicable to the determination of the cobalt content in cobalt oxalate. The measurement range is 30% to 33%.

Publish Date: 2009-01-05

GB/T 23273.2-2009 Active

GB/T 23273.2-2009 Methods for chemical analysis of cobalt oxalate—Part 2:Determination of lead content—Electrothermal atomic absorption spectrometry

This part of GB/T 23273 specifies the method for determining the lead content in cobalt oxalate.
This part is applicable to the determination of lead content in cobalt oxalate. The determination range is 0.001% to 0.01%.

Publish Date: 2009-01-05

GB/T 23273.3-2009 Active

GB/T 23273.3-2009 Methods for chemical analysis of cobalt oxatate—Part 3:Determination of arsenic content—Hydride generation-atomic fluorescence spectrometry

This part of GB/T 23273 specifies the method for determining the arsenic content in cobalt oxalate.
This part is applicable to the determination of arsenic content in cobalt oxalate. The determination range is 0.000 1% to 0.004%.

Publish Date: 2009-01-05

GB/T 23274.1-2009 Active

GB/T 23274.1-2009 Methods for chemical analysis of stannic oxide—Part 1:Determination of stannic oxide content—Potassium iodate titrimetric method

This part of GB/T 23274 specifies the determination method of tin dioxide in tin dioxide.
This part is applicable to the determination of tin dioxide in tin dioxide, with a determination range of >95%.

Publish Date: 2009-01-05

GB/T 23274.2-2009 Active

GB/T 23274.2-2009 Methods for chemical analysis of stannic oxide—Part 2:Determination of iron content—1,10-phenanthroline photometric method

This part of GB/T 23274 specifies the method for determining the iron content in tin dioxide.
This part is applicable to the determination of iron content in tin dioxide, with a measurement range of 0.010% to 0.070%.

Publish Date: 2009-01-05

GB/T 23274.3-2009 Active

GB/T 23274.3-2009 Methods for chemical analysis of stannic oxide—Part 3:Determination of arsenic content—Molybdoantimonyarsenate blue spectrophotometric method

This part of GB/T 23274 specifies the determination of arsenic content in tin dioxide.
This part is applicable to the determination of arsenic content in tin dioxide, with a measurement range of 0.000 20% to 0.050%.

Publish Date: 2009-01-05

GB/T 23274.4-2009 Active

GB/T 23274.4-2009 Methods for chemical analysis of stannic oxide—Part 4:Determination of lead and copper content—Flame atomic absorption spectrometric method

This part of GB/T 23274 specifies the determination methods for lead and copper content in tin dioxide.
This part is applicable to the determination of lead and copper content in tin dioxide, with a measurement range of 0.005% to 0.060% for lead and 0.0005% to 0.020% for copper.

Publish Date: 2009-01-05

GB/T 23274.5-2009 Active

GB/T 23274.5-2009 Methods for chemical analysis of stannic oxide—Part 5:Determination of antimony content—Malachite green photometric method

This part of GB/T 23274 specifies the method for determining the arsenic content in tin dioxide.
This part is applicable to the determination of arsenic content in tin dioxide, with a measurement range of 0.000 50% to 0.050%.

Publish Date: 2009-01-05

GB/T 23274.6-2009 Active

GB/T 23274.6-2009 Methods for chemical analysis of stannic oxide—Part 6:Determination of sulfate content—Visual turbidimetry method

This part of GB/T 23274.6 specifies the determination method of sulfate in tin dioxide.
This part is applicable to the determination of sulfate in tin dioxide, with a determination range of 0.030% to 0.60%.

Publish Date: 2009-01-05

GB/T 23274.7-2009 Active

GB/T 23274.7-2009 Methods for chemical analysis of stannic oxide—Part 7:Determination of soluble matter in hydrochloric acid—Gravimetric method

This part of GB/T 23274 specifies the method for determining the chloride soluble matter in tin dioxide.
This part is applicable to the determination of chloride soluble matter in tin dioxide, with a determination range of 0.10% to 0.80%.

Publish Date: 2009-01-05