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.

Apera Instruments 201 C Combination Ph Electrode Bnc Connector Polycarbonate

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Description

⚡ Measure pH with speed, precision, and confidence — because your data deserves the best!

PLUG PLAY COMPATIBILITY - Standard BNC connector ensures seamless integration with virtually all 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 without compromising accuracy.
MAINTENANCE FREE OPERATION - Gel KCL electrolyte design eliminates the hassle of refilling, keeping your workflow smooth.
CERTIFIED QUALITY ASSURANCE - CE, RoHS certified and ISO 9001:2015 manufactured for trusted, professional-grade performance.

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 standard BNC connector ensures broad compatibility. Maintenance-free with gel KCL electrolyte, this CE and RoHS certified electrode is built under ISO 9001:2015 standards, ideal for scientific research, environmental monitoring, and quality control.

Reviews

A**R

Funkar inte till Hayward saltklorinator

Funkade inte alls till vår Hayward Aquarite saltklorinator

14.05.2023

C**R

Prácticos y eficientes

Compatible con varios transmisores y de fácil conexión y calibración de campo

26.03.2025

F**E

sehr gut und günstig

hab sie Sonde nun die ganze Saison iin Betrieb, funkt einwandfrei absolute Kafempfehlung

12.10.2024

R**B

Good replacement for bluelab

Only used a few times so far. Works good. Packaging was good and has a nice plastic container to keep your probe wet. Time will tell if keeps working

15.05.2023

D**L

Calidad de medición y compatible con varias marcas

Funciona correctamente con la marca LABEL HYDRO SUD con dos puntos de calibración 4 y 7.

13.06.2026

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€ 82.25

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B076BFK5WY
Item model number	AI1301
Manufacturer	Apera Instruments
Product Dimensions	24 x 6 x 4 cm; 0.28 g

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

Description

Specifications

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Common Questions