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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APERA INSTRUMENTS 201-C Combination pH Electrode, BNC Connector, Polycarbonate-Body (AI1301)

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

€ 63.70

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Description

⚡ Measure Smarter, Not Harder — Stay Ahead with Precision pH Sensing!

BUILT TO LAST - Durable polycarbonate body with a protective sensor shield guards against accidental damage.
PLUG PLAY COMPATIBILITY - Standard BNC connector ensures seamless integration with most pH meters.
RAPID RELIABLE READINGS - Special lithium glass membrane delivers quick, stable pH measurements every time.
TRUSTED QUALITY ASSURANCE - CE & RoHS certified, manufactured under ISO 9001:2015 for consistent precision.
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 special lithium glass membrane and 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, while the gel KCL electrolyte eliminates refilling needs. Equipped with a standard BNC connector, it fits most pH meters, making it ideal for scientific research, environmental monitoring, and quality control. Certified CE, RoHS, and ISO 9001:2015, it offers professional-grade reliability at a competitive price.

Specifications

ASIN	B076BFK5WY
Best Sellers Rank	#98,505 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 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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€ 63.70

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

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