TTC Tergitol 7 Agar; Complete Medium, 100 plates #3563980


Pkg of 100, prepared plates of TTC Tergitol 7 Agar, complete medium, 55 mm diameter
Safety Data Sheet

Safety Data Sheet



Use TTC Tergitol 7 Agar, a selective and differential medium, for the detection and enumeration of coliforms including E. coli in drinking water, other water sources, and in foodstuffs. The combination of Tergitol and TTC, to inhibit the growth of gram-positive and spore-forming gram-negative bacteria, prevent Proteus spp. swarming and differentiates coliforms by colony color.

Key Features and Benefits

  • Many coliforms including E. coli and Enterobacter aerogenes form yellow colonies; lactose fermentation causing a local drop in pH, resulting in bromothymol blue changing from blue to yellow
  • Other coliforms, including non-lactose fermenters, reduce TTC to triphenol formazan forming red or purple colonies
  • Can be used after membrane filtration
  • After subculture of yellow colonies using non-selective medium, further identification can include Kovacs Reagent (3555313) or Oxidase Test (3553834)

Product Options

Product Packaging Catalog Number
TTC Tergitol 7 Agar; Complete Medium 10 x 55 mm plates 3563706
TTC Tergitol 7 Agar; Complete Medium 100 x 55 mm plates 3563980
TTC Tergitol 7 Agar; Base Medium 6 x 200 ml bottles 3554687
TTC Tergitol 7 Agar; Base Medium 500 g, dehydrated 3564454


Certified as part of NF VALIDATION according to the ISO 9308-1 standard and validated by the AOAC

Related Products

Related Categories

Supporting Documents