Preface

The Standard substitutes the GB/T 5009.33‐2008 “Determination of Nitrite and Nitrate in Foods”.

Compared with the GB 5009.33‐2008, main changes are following:

‐ In the Method I, the eluting condition is added for powder infant formula foods.

‐ The Method III: Oscillopolarography is deleted, and add determination of nitrite and nitrate in milk and dairy products as the Method III.

The replaced former editions are:

‐  GB 5009.33‐85, GB/T 5009.33‐1996, GB/T 5009.33‐2003, GB/T 5009.33‐2008.