Modified Letheen Broth is used for the recovery of microorganisms from cosmetics.

Tryptic Soy Broth (TSB) is a general purpose medium used for the cultivation of fastidious and nonfastidious microorganisms.

Letheen Broth is used as a culture medium in the determination of phenol coefficients of disinfectant products containing cationic surface-active materials.

Phosphate Buffer with Magnesium Chloride (Phos-WW) is used in many procedures for the preparation of dilution blanks for use in the examination of waters and wastewater.