Why do you dry the urine instead of using the liquid urine?

Dried urine is a solid, granular, shelf-stable product with concentrated nutrients, making it easier to store, transport and use in conventional large scale farming equipment.  

Our liquid urine fertiliser is stabilised and concentrated urine .  

Both fertilisers are nutrient dense with an elemental NPK of 15-2-4.  

The unconcentrated and stabilised urine has a much lower nutrient ratio (NPK = 0.6-0.02-0.08) but can also be used as a fertiliser, which is attractive for arid areas, as the urine still contains all the water.  Larger storage area is needed; however, it is great to use for irrigation as well as fertilisation, also known as fertigation. The unconcentrated urine also works well with drip irrigation systems (the Rich Earth Institute’s “Farmer Guide to Fertilising with Urine” is a great resource to check out: https://richearthinstitute.org/wp-content/uploads/2024/08/Farmer-Guide_V1_082724.pdf).  

NPK in untreated urine = 0.6% N – 0.07% P – 0.16% K.