I agree with Subhash C. Juneja because, I use 4% formalin from 37% concentrated solution to inactivate virus other microbes which, soil borne microbes or weed seeds.
A 37% solution of formaldehyde gas in water, that reacts with the amine groups of proteins and DNA, which acts to disinfect, and when buffered, to denature–tissues
I agree with Subhash C. Juneja because, I use 4% formalin from 37% concentrated solution to inactivate virus other microbes which, soil borne microbes or weed seeds.