Than Standard International Measures for all other countries are expressed in units of P2O5 (Phosphorous) and as K2O (Potassium).
All other elements other than (P) & (K) are standard in all countries.
In Australia the standard analysis measurement for liquid materials is to use weight per volume (w/v) as oppossed to weight per weight (w/w).
e.g Our product 42N - which is a UAN solution that contains 420 grams nitrogen per 1000ml, hence in Australia it has an NPK analysis of 42:0:0 NPK w/v. 1000ml of 42N weighs 1320 grams containing 420 grams of Nitrogen.