You basically pour it over the plate. And then you fix it in plain sodium thiosulphate. You can also fix it in (oddly enough) cyanide, but there have been wet-plate-related deaths, due to people ...

Successive exposure to traditional disinfectants and quaternary ammonium compounds enhances resistance genes expression and co-selection in biofilm-based partial nitrification-anammox systems ...

The presence of thiosulphate, sulfate, sulfite or sulfide as a sulfur source also caused a decrease in the degradation rate. Especially when sulfate was used, the production of bacteria was almost ...