Most routinely used and impedes bacterial growth
Refrigeration at 2-8 degree Celsius
Good preservative for sediments but precipitates proteins and act as reducing agents
Formali
Preserves ketones, proteins and reducing substances
Toluene
Used for inhibiting bacterial growth
Chloroform
Preserves sediments but interferes with pH readings
Boric Acid
Glucose preservative and prevents bacterial growth
Chlorohexidine
Prepared preservatives tablets
Commercially
For drug analysis
Sodium Fluoride