In-Situ Aquaculture Buoy Manual (purchased after 28 May 2013) - Manual (Page 38)

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If an instrument is returned to our Service Center for repair or
recalibration without a statement that it has been cleaned and
decontaminated, or if it is the opinion of our Service
Representatives that the equipment presents a potential health or
biological hazard, we reserve the right to withhold service until
proper certification is obtained.