WARNING: Personnel using this standard should have practical experience in formal laboratory work. This standard does not address all possible safety issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated by relevant national laws. Liquid anhydrous ammonia is highly toxic, corrosive to skin, mucous membranes and eyes, and can cause severe burns if contacted. Proper protection should be carried out during operation. This standard specifies the gravimetric determination of liquid anhydrous ammonia (liquid ammonia) residue content. This standard applies to products with a residue content of not less than 0.02%, and is an arbitration method for determining the residue content.
GB/T 8570.3-2010 Referenced Document
GB/T 8570.1-2008 Determination of liquefied anhydrous ammonia.Part 1:Taking a laboratory sample
HG/T 2843 Chemical fertilezer products-standard volumetrie,standard,reagent and indicator solutions for chemical analysis