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Oct 01,2018

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PH Probes for Laboratories

Quick Overview

Our laboratory pH electrodes cover almost all general pH requirements. We can however change these pH electrodes to double junction or alter the length and other factors making a special pH Electrode that is Customer Specific. Manufactured to ISO 9001 Standard, our pH Electrodes are a high quality product that are great value for money.

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Details

pH Electrode Theory

pH electrode measurements are made by comparing the readings in a sample with the readings in standards whose pH has been defined. When a pH sensing electrode comes in contact with a sample, a potential develops across the sensing membrane surface and that membrane potential varies with pH levels. A reference electrode provides a second, unvarying potential to quantitatively compare the changes of the sensing membrane potential. Combination pH electrodes are composed of a sensing electrode with the reference electrode built into the same electrode body. Combination electrodes provide the same selectivity and response as a half-cell system, but offer the convenience of working and maintaining only one electrode. The difference between the reference electrode and sensing electrode potentials is in millivolts, which can be amplified by a suitable pH amplifier/signal convertor. This will then provide a mA or V output that can be converted to pH units on a suitable display or logging unit.

The section below provides the basic information for a selection of standard pH electrode for your applications. Additional details can be found on the individual product datasheets and a selection guide is available in the downloads section.

Availability: Stock Item

Components / Downloads

For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

REF	DESCRIPTION	DOWNLOADS	PRICE	ORDER ITEM

pH Electrodes
110-75	P10 Glass pH Electrode for a pH range of 0-14. Eo point -25mV to +25mV. Shaft dimensions (approx) 12mm diameter and 120mm length. BNC connector with 1m cable. Operating temperature 0 to 80 C. Suitable for general purpose pH monitoring. A separate reference electrode is required.	Datasheet Size: (239.98 KB) Electrode Selection Guide Size: (231.59 KB)	£40.00	or call us for a quote
111-75	P11 Glass Combination pH Electrode for a pH range of 0-14. Combination electrode with a Silver Chloride, liquid filled, single annular ceramic junction. Eo point -25 to +25mV. Shaft dimensions (approx) 12mm diameter and 120mm length. BNC connector with 1m cable. Operating temperature 0 to 100 C. Suitable for general purpose pH monitoring with toughened membrane.		£52.00	or call us for a quote
111-90	P11 Rod Glass Combination pH Electrode for a pH range of 0-14. Combination electrode with a Silver Chloride, liquid filled, single annular ceramic junction. Eo point -25 to +25mV. Shaft dimensions (approx) 12mm diameter and 120mm length. BNC connector with 1m cable. Operating temperature 0 to 100 C. Suitable for general purpose pH monitoring with toughened membrane.	Datasheet Size: (242.68 KB)	£52.00	or call us for a quote
111-993	P11/CER/DJ/LiCl Glass Bodied Non Aqueous pH Electrode for a pH range of 0-14. Combination electrode with a Silver Chloride, liquid filled, double annular ceramic junction. Eo point -25 to +25mV. Shaft dimensions (approx) 12mm diameter and 120mm length. BNC connector with 1m cable. Operating temperature 0 to 80 C. Suitable for pH monitoring in liquids/Non aqueous solutions.	Datasheet Size: (281.96 KB)	£110.00	or call us for a quote
111-702	P11/HA Glass Bodied High Alkaline pH Electrode for a pH range of 0-14. Combination electrode with a Silver/Silver Chloride reference wire and ceramic junction. Eo point 0 to +/-25mV. Shaft dimensions (approx) 12mm diameter and 120mm length. BNC connector with 1m cable. Operating temperature 0 to 100 C. Suitable for pH monitoring in photographic solutions and where sodium is present.	Datasheet Size: (240.87 KB)	£81.00	or call us for a quote
111-761	P11 Protected Bulb pH Electrode for a pH range of 0-14. Combination electrode with a Silver/Silver Chloride, single porous Teflon junction. Eo point 0 to +/-25mV. Shaft dimensions (approx) 12mm diameter and 120mm length. BNC connector with 1m cable. Operating temperature 0 to 100 C. Suitable for pH monitoring where a robust pH electrode is required.	Datasheet Size: (271.44 KB)	£71.00	or call us for a quote