ABSTRACT

Tetrasodium pyrophosphate solution (work solution 5 mM): Prepare a stock solution of 500 mM tetrasodium pyrophosphate (SIGMA) in reagent-grade water preltered onto 0.2 µm lters (Whatman Puradisc)

3,6-bis[dimethylamino]acridinium chloride (acridine orange [AO]) working solution 0.025% (w/v) in reagent-grade water. Prepare 50 mL solution and dark preserved at 4°C for 3 weeks.