Yokogawa PH72 Personal pH/ORP Meter - Manual (Page 17)

IM 12B03D02-01E 1-10
1. Outline
O-rings and gaskets are important parts to ensure that the PH72 meter is water resistant.
Replace these parts as required. Refer to Section 6.7, “Storage and O-ring/Gasket
Replacement” for replacement.