Can this pro be totally submerged underwater? What is the recommended depth of placement?

Yes it can be submerged. There is no recommended depth beyond simply ensuring the sensor on the tip is exposed to the test sample. The cable is 3 feet long.

Can this probe be left in contact with pool water indefinitely?

No, the chlorine is corrosive and will ruin the sensor.

will this work with chemtrol and do you offer an ORP probes

If by chemtrol you mean monitoring wall-mounted meters, then we would recommend the 201DJ-C instead. It features more durable and enduring design for long-term water testing and less likelihood of losing calibration to turbulent water as quickly as the 201-C. Yes, there is an ORP probe, the Apera 301PT-C.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Apera Instruments 201-C Combination pH Electrode, BNC Connector, Polycarbonate-body (AI1301)

Product ID: 290274578

⚡50Ω ultra-low impedance for rapid response

🔗Standard BNC connector for universal compatibility

🛡️Detachable sensor shield for glass membrane protection

Description

⚡ Measure smarter, not harder — precision pH sensing that keeps you ahead

BUILT TO ENDURE - Polycarbonate body with sensor shield guards against accidental damage
PLUG PLAY PRECISION - Standard BNC connector fits seamlessly with most pH meters
TRUSTED QUALITY ASSURANCE - CE, RoHS certified and ISO 9001:2015 manufactured for professional-grade accuracy
LIGHTNING FAST P H READINGS - Special lithium glass membrane ensures swift, stable measurements
MAINTENANCE FREE RELIABILITY - Gel KCL electrolyte means no refilling hassles

The Apera 201-C Combination pH Electrode features a special lithium glass membrane with ultra-low 50 Ohm impedance for fast, stable pH readings across 0–14 pH and temperatures up to 80°C. Its durable polycarbonate body and detachable sensor shield protect the sensitive glass membrane from damage, while the gel KCL electrolyte eliminates the need for refilling. Equipped with a standard BNC connector, it offers broad compatibility with pH meters. Certified by CE, RoHS, and ISO 9001:2015, this electrode is ideal for scientific research, environmental monitoring, and quality control applications.

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