Foreword

This standard replaces GB 5009.4-2010 “National food safety standard Determination of ash in foods”, GB/T 5505-2008 “Inspection of grain and oils-Determination of the ash content by incineration”, GB/T 22427.1-2008 “Starch-Determination of ash”, GB/T 9695.18-2008 “Meat and meat products-Determination of total ash”, GB/T 12532-2008 “Determination of ash content in edible mushroom”, GB/T 9824-2008 “Determination of total ash in oilseed residues”, GB/T 9825-2008 “Oilseed residues-Determination of ash insoluble in hydrochloric acid”, GB/T 12729.7-2008 “Spices and condiments-Determination of total ash”, GB/T 12729.8-2008 “Spices and condiments-Determination of water-insoluble ash”, GB/T 12729.9-2008 “Spices and condiments-Determination of acid-insoluble ash”, GB/T 17375-2008 “Animal and vegetable fats and oils - Determination of ash”, GB/T 22510-2008 “Cereals, pulses and by-products-Determination of ash yield by incineration”, GB/T 8306-2013 “Tea-Determination of total ash content”, GB/T 8307-2013 “Tea-Determination of water-soluble ash and water-insoluble ash content”, GB/T 8308-2013 “Tea-Determination of acid-insoluble ash content”, SN/T 0925-2000 “Method for the determination of total ash of tea for import and export”, SN/T 0921-2000 “Method for the determination of water-soluble ash and water-insoluble ash of tea for import and export”, SN/T 0923-2000 “Method for the determination of acid-insoluble ash of tea for import and export”, and NY 82.8-1988 “Fruit juice Method for the determination of total ash”.

Compared with GB 5009.4-2010, the major changes of this standard are as follows:

——the determination of ash in starch and its derivatives has been added in accordance with GB/T 22427.1-2008;

——the determination of water-soluble ash, water-insoluble ash, acid-soluble ash and acid-insoluble ash in some foods has been added in accordance with GB/T 12729.8-2008, GB/T 12729.9-2008, GB/T 8307-2013 and GB/T 8308-2013.