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The 30749 is a small cylindrical canister of desiccant that is used in the CSAT3B to keep the internal electronics dry. The canister contains safe, non-toxic super-activated indicating silica gel. The canister should be replaced as soon as the CSAT3B internal relative humidity exceeds 25%, or when the silica gel changes in color from blue to pink.

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Replacement Part for the following products:

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