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Bacillus subtilis: var. niger / var. globigii

David Lawton dhlawton at clara.co.uk
Fri Jan 14 14:09:38 EST 2000

It's B. stearothermophilus var. niger for steam and B. subtilis var.
globigii for ETO

David Lawton

Hilde Bastaerts <h.bastaerts at worldonline.be> wrote in message
news:85inh9$glj$1 at news.worldonline.be...
> We use Bacillus subtilis spore strips for validating and monitoring ETO
> dry heat sterilization cycles. Is var. niger as well as var. globigii
> suitable for both purposes? Or is var. niger the preferred organism for
> cycles, and var. globigii for dry heat cycles - or vice versa?
> Hilde Bastaerts
> Alcon-Couvreur, Microbiology Lab
> h.bastaerts at worldonline.be

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