National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Page 14
... ml of water and 4 ml of concentrated nitric acid . To remove excess nitric acid , the solution was evaporated to dryness on a steam bath , several ml of water added to the residue , evaporated to dryness again and the procedure repeated ...
... ml of water and 4 ml of concentrated nitric acid . To remove excess nitric acid , the solution was evaporated to dryness on a steam bath , several ml of water added to the residue , evaporated to dryness again and the procedure repeated ...
Page 12
... water and dilute to 100 ml . Do not use solutions that are more than one day old . ( b ) Iron , high purity ( low manganese ) . Determine the manganese content of a suitably milled and well - mixed portion of the metal by the periodate ...
... water and dilute to 100 ml . Do not use solutions that are more than one day old . ( b ) Iron , high purity ( low manganese ) . Determine the manganese content of a suitably milled and well - mixed portion of the metal by the periodate ...
Page 13
( a ) Mixed acids . Add 100 ml of H2SO4 to 525 ml of water slowly , while stirring . Cool , add 125 ml of HPC and 250 ml HNO3 , and mix . H3PO4 = 0.001 g Cr ) . ( e ) Potassium dichromate solution ( 1 ml Dissolve 2.830 g of potassium ...
( a ) Mixed acids . Add 100 ml of H2SO4 to 525 ml of water slowly , while stirring . Cool , add 125 ml of HPC and 250 ml HNO3 , and mix . H3PO4 = 0.001 g Cr ) . ( e ) Potassium dichromate solution ( 1 ml Dissolve 2.830 g of potassium ...
Page 14
... ml with water and proceed as directed in paragraphs ( d ) and ( e ) . Use this solution for the standardization of the sodium arsenite solution . ( d ) Add 10 ml of AgNO3 solution and 15 ml of ( NH4 ) 2S208 solution . Heat the solution ...
... ml with water and proceed as directed in paragraphs ( d ) and ( e ) . Use this solution for the standardization of the sodium arsenite solution . ( d ) Add 10 ml of AgNO3 solution and 15 ml of ( NH4 ) 2S208 solution . Heat the solution ...
Page 17
... ml of solution , using a cell path of 2 cm . Stability of Color The color develops within 5 minutes at 98 ° C and is ... water and cool . Dissolve 20 g of ammonium molybdate in the acid and dilute to 1 liter with water . ( b ) Hydrazine ...
... ml of solution , using a cell path of 2 cm . Stability of Color The color develops within 5 minutes at 98 ° C and is ... water and cool . Dissolve 20 g of ammonium molybdate in the acid and dilute to 1 liter with water . ( b ) Hydrazine ...
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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