This GS mentions PH8EFP, PH8ERP, OR8EFG and OR8ERG. See GS12EN about PH4/OR4 Sensor . Series pH/ORP Sensor. n. TURESFEA Ryton pH/ORP Sensors PH8EFP, PH8ERP, OR8EFG, OR8ERG With the body made of Ryton, a strong engineering plastic, which isparable to Fluororesin (PTFE) in . terms of corrosion resistance and heat resistance, it
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