BS 6215-1 81st Edition, November 30, 1981
Methods of Test for Agricultural Food Products Part 1: Determination of Crude Fibre Content (General Method)
Includes all amendments and changes through Reaffirmation Notice , October 15, 1996
Published By:British Standards Institution (BSI)
The prepared sample is boiled with dilute sulphuric acid, the residue separated, washed and boiled with dilute sodium hydroxide solution. Residue remaining is separated, washed, dried and loss in mass on incineration determined.