PLS-PP Range Of Float Switches Awarded FDA and NSF Approval. We are pleased to announce that our PLS-PP series of float switches are FDA and NSF approved. This means they are suitable for food contact. These PP (Polypropylene) float switches, manufactured by PIC GmbH, comply with FDA CFR 177.2600 and CFR 177.1520 norms. FDA and NSF approval applies to the following float switch products, which can be found on the Alan Butcher .
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