Standard Guide for Monitoring Aqueous Nutrients in Watersheds
实施日期:1997-06-10
Standard Specification for Filters Used in Air or Nitrogen Systems
实施日期:2000-05-10
Respiratory protective devices - Self-contained closed-circuit breathing apparatus compressed oxygen or compressed oxygen-nitrogen type - Requirements, testing, marking (includes Amendment A1:2000); Ge...
Photography -- Processing waste -- Determination of ammoniacal nitrogen (microdiffusion method)
发布日期:2001-12-01 实施日期:2001-12-01
Water quality. Determination of nitrogen. Part 2:Determination of bound nitrogen,after combustion and oxidation to nitrogen dioxide,using chemiluminescence detection first edition
实施日期:1997-03-15
Bodenverbesserungsmittel und Kultursubstrate. Bestimmung von Stickstoff. Verfahren nach Dumas Improvers and Growing Media-Determination of Nitrogen-Part 2:Dumas Method Amendements du sol et supports de...
实施日期:2001-11-09
Method for determination of trace Nitrogen in electronic grade Argon--Concentration gas chromatographic method (Part two) ...
实施日期:1988-01-01
Micrographics. Visual density of microfilms. Method of measurement and values.
实施日期:1984-12-01
Standard Practice for Calculation of Pore Size Distributions of Catalysts from Nitrogen Desorption Isotherms
实施日期:1994-01-15
Pruefverfahren fuer Fleisch und Fleischerzeugnisse. Bestimmung des Stickstoffgehaltes (Bezugsverfahren) Methods of Test for Meat and Meat Products Part 2:Determination of Nitrogen Content (Reference Me...
实施日期:1980-01-01
实施日期:2008-02-29
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