---
product_id: 206206695
title: "201DJ-C Double Junction Combined pH Electrode, AI3115"
brand: "apera instruments"
price: "€ 101.93"
currency: EUR
in_stock: true
reviews_count: 5
category: "Apera Instruments"
url: https://www.desertcart.de/products/206206695-201dj-c-double-junction-combined-ph-electrode-ai3115
store_origin: DE
region: Germany
---

# BNC connector for universal compatibility 0-14 pH range for versatile testing Operates up to 80°C for robust environments 201DJ-C Double Junction Combined pH Electrode, AI3115

**Brand:** apera instruments
**Price:** € 101.93
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your water testing game with precision and durability that professionals trust!

## Quick Answers

- **What is this?** 201DJ-C Double Junction Combined pH Electrode, AI3115 by apera instruments
- **How much does it cost?** € 101.93 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/206206695-201dj-c-double-junction-combined-ph-electrode-ai3115)

## 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

- • **Compact Powerhouse:** Lightweight and slim (109g, 16cm length) for easy handling and integration into your workflow without bulk.
- • **Precision in Every Drop:** Accurate pH readings across the full 0-14 scale, empowering confident decisions in complex water testing.
- • **Plug & Play Compatibility:** Seamlessly connects with all BNC-equipped pH meters, eliminating setup hassles and boosting lab efficiency.
- • **Built to Brave the Elements:** Durable polycarbonate casing and double ceramic junction prevent clogging and contamination, ensuring longevity in challenging samples like wastewater and pools.
- • **Engineered for Real-World Use:** Designed specifically for cloudy, high-ion solutions—perfect for environmental pros who demand reliability in the field.

## Overview

The Apera Instruments 201DJ-C is a double-junction combined pH electrode featuring a 0-14 pH measurement range and temperature tolerance up to 80°C. Its polycarbonate casing and ceramic diaphragm prevent contamination, making it ideal for testing cloudy or challenging water samples such as wastewater, pools, and spas. Compatible with all BNC connector pH meters, it offers reliable, accurate readings in demanding environments, though it requires a separate temperature sensor for compensation.

## Description

The Apera 201DJ-C double-junction combination pH electrode is ideal for long lasting tests in cloudy water solutions, such as waste water, swimming pools and spas, as well as for environmental monitoring. Due to its structure with double connection point, it prevents the electrode from being clogged and contaminated during measurement. Not suitable for measurements in low ion concentration solutions (e.g. B. : deionised water or distilled water), strong alkaline solutions (pH >12), strong corrosive liquids or for long-term measurements in high temperature solutions (>60°C). Compatible with all pH meters that use BNC connectors. Temperature sensor is not built-in. For complete temperature compensation, a separate temperature sensor is required to activate ATC or enter the temperature manually.

Review: Used to replace a bad probe works very well. Responsive and accurate
Review: Funciona perfectamente

## Features

- Measuring range: 0-14 pH, 0-80 °C
- Casing: Polycarbonate.
- Diaphragm: Double/Ceramic
- Reference electrode: Ag/AgCl
- Connection: BNC

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076M6F7V2 |
| Batteries Required? | No |
| Best Sellers Rank | 21,956 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 38 in Lab pH Meters |
| Customer Reviews | 4.0 4.0 out of 5 stars (72) |
| Date First Available | 20 Oct. 2017 |
| Included components | Combination pH electrode |
| Item Package Quantity | 1 |
| Item Weight | 109 g |
| Item model number | AI3115 |
| Manufacturer | Shanghai Sanxin Instrumentation |
| Material | PC_(Polycarbonate), PE_(Polyethylene), Polycarbonate Glass |
| Measurement System | US |
| Part number | AI3115 |
| Product Dimensions | 16 x 1.27 x 1.27 cm; 109 g |
| Special Features | Cable length: 3 m, Dimensions: diameter 12 x 160 mm. |

## Images

![201DJ-C Double Junction Combined pH Electrode, AI3115 - Image 1](https://m.media-amazon.com/images/I/51ZSQnqmTaL.jpg)

## Questions & Answers

**Q: Can this be used for testing cationic emulsions?**
A: For sticky testing substances, we would recommend the pre-pressurized Labsen 851-3 for viscous solutions.

**Q: Will this work with the milwaukee sms122?**
A: If the model has BNC connectors, then you at a minimum can test the probe. If it won't give proper readings after trying, you can always return to Amazon for a refund within 30 days.

**Q: Is it compatible with Tris containing buffers?**
A: No.

**Q: is this item can be use in seawater sampling?**
A: Yes. This item can be used to test the pH of seawater samples.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***L on 25 March 2023*

Used to replace a bad probe works very well. Responsive and accurate

### ⭐⭐⭐⭐⭐ Review
*by F***O on 9 June 2025*

Funciona perfectamente

### ⭐⭐⭐⭐⭐ Review
*by ト***ん on 23 June 2022*

米国オハイヨ州の老舗医療機器メーカー。 精度と反応速度が素晴らしく、誤差は全くない。 見た目も高級感があり、コネクター根本の作りも本格なラボで使えるほど耐久性がある。 BNCコネクタを搭載する全てのpHモニターに接続可能。 コードの長さが3mと記載されているが、本品は1mしかないので注意。

## Frequently Bought Together

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

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-21*