NPK Explained![](images/return.GIF)
In
Australia, as well as New Zealand and South Africa the major element
values for PHOSPHOROUS and POTASSIUM are expressed in full units of
elemental (P) & (K).
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.
420
grams
1.32 Specific Gravity = 32% w/w Nitrogen hence 32-0-0 NPK w/w