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: 82291024

⚡50 Ohm low impedance for ultra-fast response

🔗Standard BNC connector for universal compatibility

🛡️Detachable sensor shield protects fragile glass membrane

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Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Stay ahead in precision pH testing with Apera’s lightning-fast electrode!

WIDE APPLICATION RANGE - Measures pH 0–14 and temperatures up to 80°C, perfect for diverse water solution testing.
PLUG PLAY COMPATIBILITY - Standard BNC connector ensures seamless integration with all BNC-enabled pH meters.
RAPID RELIABLE READINGS - Special lithium glass membrane delivers quick, stable pH measurements every time.
DURABILITY MEETS PRECISION - Polycarbonate body with sensor shield guards against accidental damage in busy labs.
MAINTENANCE FREE ELECTROLYTE - Gel KCL electrolyte means no refilling hassles—focus on your data, not upkeep.

The Apera Instruments 201-C Combination pH Electrode features a low-impedance lithium glass membrane for rapid, stable pH readings across a full 0–14 pH range. Its durable polycarbonate body and detachable sensor shield protect sensitive components, while the standard BNC connector ensures broad compatibility. Designed for general water solution testing, it requires no electrolyte refilling thanks to its gel KCL system and operates reliably up to 80°C. CE and RoHS certified, it’s a trusted tool for scientific research, environmental monitoring, and quality control.

Specifications

ASIN	B076BFK5WY
Best Sellers Rank	#45,900 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Lab Electrochemistry Accessories
Date First Available	October 9, 2017
Item Weight	0.01 ounces
Item model number	AI1301
Manufacturer	Apera Instruments
Product Dimensions	9.45 x 2.36 x 1.57 inches

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