Biological Sterilization Indicator BT20 (box of 30 or 100 units)

Technical characteristics:

- Polypropylene random copolymer tube, 44.0 mm high, 8.5 mm external diameter. 0.5 mm thick wall.

- Polypropylene cover: 13.0 mm high, 10.5 mm external diameter. 1.0 mm thick wall.

- Glass ampoule: 35.0 to 38.0 mm high. External diameter: 6.5 mm. 0.2 - 0.3 mm thick wall.

- Culture medium 0.5 - 0.7 ml, purple color.

- Cap filter: medical grade paper 60 g / m2, 16.0 mm in diameter.

- Filter paper 8.0 mm in diameter and 160 g / m2.

- 105 or 106 spores of Geobacillus stearothermophilus ATCC 7953 per vial.

- Positive spore growth result (failure in the sterilization process): the culture medium turns yellow. Incubation at 60º C for 24 hrs (maximum).

- D value: not less than 1.5 minutes at 121º C. Another D value is obtained at 134º C for the calculation of the Z value.

- Z value: not less than 6º C.