LETHEEN BROTH, AOAC (VEG.) *

These media are prepared by completely replacing animal based peptones with vegetable peptones which are free from BSE/TSE risks. These media are the modification of Tryptone Glucose Extract Agar developed according to APHA for use in the microbiological examination of water which was further modified by Weber and Black with addition of lecithin and polysorbate 80 which resulted in a medium that effectively neutralizes quaternary ammonium compounds in the testing of germicidal activity.

for determination of bacterial activity of quaternary ammonium compounds using Escherichia coli or Staphylococcus aureus