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The pipework in SIP fermenters much be made up of grade ____________

(a) 316 stainless steel

(b) 317 stainless steel

(c) 318 stainless steel

(d) 319 stainless steel

The question was posed to me during an online interview.

My doubt stems from Fermentation Laboratory topic in section Equipping a Fermentation Laboratory, the Design and Preparation of Media for Bioprocesses of Fermentation Technology

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Correct answer is (a) 316 stainless steel

For explanation I would say: The pipework in SIP fermenters must be made up of grade 316 stainless steel. Otherwise, it is possible for rust to enter the jacket and the fermenter might get damaged potentially. The other grades must be avoided at any costs.

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