PINPOINT ORP Replacement Probe Replacement Probe with Cleaning Strip is designed especially for the PINPOINT ORP Monitor and the PINPOINT ORP Controller or any meter/monitor/computer interface with an appropriate BNC Input. PINPOINT ORP Probe features long, continuous duty life expectancy, fast response and a full range of measurement from -2,000 to +2,000 mV. Each probe features a 10 foot cable with a high interference suppression jacket, Ag-AgCl reference, and utilizes proprietary UltraPure Platinum probe technology capable of accurate ORP measurement in the negative measurement range. Platinum Polishing Strip will keep your probe operating at peak performance and accuracy. **Note: This probe is for use with the ORP meter. It does not measure pH. Any questions, please contact us and we will be happy to help. 100% satisfaction guaranteed.