This standard specifies the gravimetric method for determining the residue content of liquid anhydrous ammonia (liquid ammonia). This method is applicable to products with a residue content equal to or greater than 0.02% (m/m), and is an arbitration method for determining residue content.
GB 8570.3-1988 Gravimetric method for determination of residue content of liquid anhydrous ammonia was changed to GB/T 8570.3-2010 Determination of liquefied anhydrous ammonia.Part 3:Residue content.Gravimetric method.