c. Alkaline citrate: Dissolve 20 g trisodium citrate and 1 g sodium hydroxide in deionized water. Dilute to 100 mL.
d. Sodium hypochlorite, commercial solution, about 5%. This solution slowly decomposes once the seal on the bottle cap is broken. Replace about every 2 months.
e. Oxidizing solution: Mix 100 mL alkaline citrate solution with 25 mL sodium hypochlorite. prepare fresh daily