National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Page 11
... wash , it was found that the best protection to the copper plate consistent with high heat transfer and least moisture difficulties was accomplished by dressing the cast- ing surface with a very thin layer of colloidal graphite with ...
... wash , it was found that the best protection to the copper plate consistent with high heat transfer and least moisture difficulties was accomplished by dressing the cast- ing surface with a very thin layer of colloidal graphite with ...
Page 13
... sample is complete , and boil the solution until brown fumes have been expelled . Dilute to 75 ml with water , filter through a coarse paper , collecting the filtrate in a 500 - ml Erlenmeyer flask . Wash the residue with hot water , 13.
... sample is complete , and boil the solution until brown fumes have been expelled . Dilute to 75 ml with water , filter through a coarse paper , collecting the filtrate in a 500 - ml Erlenmeyer flask . Wash the residue with hot water , 13.
Page 14
Erlenmeyer flask . Wash the residue with hot water , adjust the volume to 125 ml and proceed as directed in paragraphs ( d ) and ( e ) . ( c ) Dissolve approximately the same weight of iron as the weight of the sample in 30 ml of the ...
Erlenmeyer flask . Wash the residue with hot water , adjust the volume to 125 ml and proceed as directed in paragraphs ( d ) and ( e ) . ( c ) Dissolve approximately the same weight of iron as the weight of the sample in 30 ml of the ...
Page 18
... wash the fuming and fume gently to remove HBr . wall of the flask with 5 ml of water , and evaporate to Cool somewhat and add 10 ml of water and 15 ml of fumes . Na2SO3 solution . Heat the solution to boiling and boil gently for 30 ...
... wash the fuming and fume gently to remove HBr . wall of the flask with 5 ml of water , and evaporate to Cool somewhat and add 10 ml of water and 15 ml of fumes . Na2SO3 solution . Heat the solution to boiling and boil gently for 30 ...
Page 19
solution to a 50 - ml volumetric flask . Wash the Erlenmeyer flask with 2 - ml portions of a dilute solution of the ammonium molybdate - hydrazine sulfate reagent ( 1 + 4 ) and transfer the washings to the 50 - ml flask . Dilute to the ...
solution to a 50 - ml volumetric flask . Wash the Erlenmeyer flask with 2 - ml portions of a dilute solution of the ammonium molybdate - hydrazine sulfate reagent ( 1 + 4 ) and transfer the washings to the 50 - ml flask . Dilute to the ...
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acid solution add 10 ml aliquot alloy ammonium Analytical Analytical curve assay average beaker boil Bureau of Standards butyl acetate calibration carbon Cartridge Brass cents chemical shift chill-cast chromium composition Cool copper Copper-Base Spectrochemical Standards COPPER-BASE STANDARDS determination dilute Dissolve electrolyte electron probe electron probe microanalysis elements Erlenmeyer flask ferrite Figure filter free-cutting brass fumes glass grain heat homogeneity inclusions Institute for Materials Laboratory Low-Alloy Steel manganese Materials Research mean free path measurement metal method microns ml of H2SO4 ml of HNO3 ml of water Mossbauer National Bureau NBS Misc NBS Miscellaneous Publication NBS Spectrometric nickel nitric acid obtained oxide paper pearlite percent photometric precipitate procedure Publ Reagents sodium sodium nitroprusside spectrometer standard deviation Standard Reference Materials sulfate sulfuric acid Technology titration Transfer uranium Vacuum fusion values vanadium viscosity volumetric flask wash weight white cast iron x-ray zinc