Which microorganism is used for container closure integrity testing?

Brevundimonas diminuta is used for container closure integrity testing because of its very small size. 

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Tryptone Soya Agar with neutralizers for Surface and finger dab monitoring

Finger dab monitoring and surface monitoring is performed to check bioload on finger dab and on clean room floor and other surfaces. Gloved hands are frequently sanitized with 70% Isopropyl alcohol and clean room surfaces are disinfected with routine disinfectants. Frequent and regular use of disinfectant can results in false negative results. These disinfectants can inhibit the growth of microorganisms on sampled media plates. To prevent these false negative results Tryptone soya agar with neutralizers can be used to neutralize the residues of disinfectants and actual results can be obtained.

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