DD031-1VL is referred as "Trehalose Te" disc under HiMedia catalogue. Trehalose discs are Carbohydrate Differentiation Discs, applicable in differentiation of bacteria on the basis of carbohydrate fermentation abilities. When a carbohydrate is fermented by a microorganism, the acid (or acid and gas) produced lowers the pH of the medium and the indicator in the basal medium thus changes colour.
Specifications:
Appearance: Filter paper discs of 10 mm diameter bearing letters "Te" in continuous printing style.
Cultural Response: Incubation for 18-48 hrs. at 35-37C
Medium: Phenol Red Broth Base
Colour change: Red to orange to yellow
Storage: 10-30C
Pack size: 1 vial