---
product_id: 290274578
title: "201-C Combination pH Electrode, BNC Connector, Polycarbonate-body (AI1301)"
brand: "apera instruments"
price: "€ 80.60"
currency: EUR
in_stock: true
reviews_count: 5
category: "Apera Instruments"
url: https://www.desertcart.de/products/290274578-201-c-combination-ph-electrode-bnc-connector-polycarbonate-body-ai1301
store_origin: DE
region: Germany
---

# 50 Ohm low impedance for ultra-fast response Standard BNC connector for universal compatibility Detachable sensor shield protects fragile glass membrane 201-C Combination pH Electrode, BNC Connector, Polycarbonate-body (AI1301)

**Brand:** apera instruments
**Price:** € 80.60
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 201-C Combination pH Electrode, BNC Connector, Polycarbonate-body (AI1301) by apera instruments
- **How much does it cost?** € 80.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/290274578-201-c-combination-ph-electrode-bnc-connector-polycarbonate-body-ai1301)

## Best For

- apera instruments enthusiasts

## Why This Product

- Trusted apera instruments brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **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.

## Overview

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.

## Description

Apera Instruments 201-C Combination pH Electrode is made for general water solutions' pH measurement in scientific research, environmental monitoring, and quality control. Apera's special lithium glass membrane ensures low impedance (as low as 50 Ohm) and stable potentials, which helps generate quick and stable pH readings.Detachable sensor shield is built upon the sensitive glass membrane to protect it from accidental damage. Standard BNC connector, compatible with any pH meters that adopt BNC connectors. Measurement Range: 0–14 pH, 0–80˚C (32–176˚F); Housing: Polycarbonate; Junction: Ceramic; Reference Electrode: Ag/AgCl; Connector: BNC; Size: ø12*160 mm; Cable: 3 Ft; Temperature sensor: N/A. Not suitable for testing in highly corrosive or viscous liquids, or for continuous testing in high-temperature solutions (>140˚F). The product is CE and RoHS certified and is manufactured under an ISO 9001: 2015 certified quality system.Not suitable for testing in low-ion concentration solutions (eg deionized water or distilled water) strong base solutions (pH>12) highly corrosive liquid or for continuous testing in high temperature solutions (>140˚F) The product is CE and RoHS certified and is manufactured under an ISO 9001 2015 certified quality system

Review: La calibracion ha sido rapida y perfecta junto con el liquido 7.0 de la misma marca. Clorador salino funcionando bien en 7,3. El tiempo dira si es buena y cuanto dura. Cuando pase el verano ampliare informacion. Precio muy bueno, bien empaquetado.
Review: Pünktliche Lieferung und angesse Verpackung. Funktioniert mit älteren Dennerle Steuerung. Zur Kalibrierung sollte man mindestens 15 Minuten warten.

## Features

- Apera's special lithium glass membrane ensures quick and stable pH readings.
- 50 Ohm low impedance for swift response.
- Gel KCL electrolyte adopted. No need for refilling.
- Detachable sensor shield is built upon the sensitive glass membrane to protect it from accidental damage.
- Standard BNC connector

## Technical Specifications

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

## Images

![201-C Combination pH Electrode, BNC Connector, Polycarbonate-body (AI1301) - Image 1](https://m.media-amazon.com/images/I/51bX1McL+6L.jpg)

## Questions & Answers

**Q: Can this pro be totally submerged underwater? What is the recommended depth of placement?**
A: 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.

**Q: Can this probe be left in contact with pool water indefinitely?**
A: No, the chlorine is corrosive and will ruin the sensor.

**Q: Can use in saltwater? Ph controller?**
A: Yes on both accounts

**Q: will this work with  chemtrol and do you offer an ORP probes**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***I on 16 January 2025*

La calibracion ha sido rapida y perfecta junto con el liquido 7.0 de la misma marca. Clorador salino funcionando bien en 7,3. El tiempo dira si es buena y cuanto dura. Cuando pase el verano ampliare informacion. Precio muy bueno, bien empaquetado.

### ⭐⭐⭐⭐⭐ Review
*by U***. on 15 August 2025*

Pünktliche Lieferung und angesse Verpackung. Funktioniert mit älteren Dennerle Steuerung. Zur Kalibrierung sollte man mindestens 15 Minuten warten.

### ⭐ Review
*by A***R on 14 May 2023*

Funkade inte alls till vår Hayward Aquarite saltklorinator

## Frequently Bought Together

- APERA INSTRUMENTS 201-C Combination pH Electrode, BNC Connector, Polycarbonate-Body (AI1301)
- Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each
- APERA INSTRUMENTS 201DJ-C Double-Junction pH Electrode, BNC Connector, 3 Ft Cable, PC Body

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-13*