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AML Instruments offer a wide variety of pH meters for laboratory and field use from the World leader in pH measurement Mettler Toledo. They are designed to be both bench and portable analysis testers for use in various industries.
Every pH meter is competitively priced.
Whether you require a single or multi-channel instrument to measure up to three parameters simultaneously in the same sample, we can provide you with the correct instrument for your testing.
As well as pH meters, we can also provide you with suitable pH sensors, probes and buffer solutions to keep your meter within its recommended calibration range.
As well as the pH/MV meter, we can provide you with the following accessories:
Partnering with AML Instruments, you will be able to create an effortless pH system, from taking measurements to transferring data and automation.
Please click on the product listings below for more information/ prices for our pH devices. If you have any questions or queries, then please get in touch with our technical sales team.
During UK regular working hours, you can call us on 01522 789 375 or use our live chat, which is in the bottom right-hand corner of this webpage.
Outside of those hours, you could email our technical sales team at [email protected]
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Below are some of the more frequently asked questions our sales team often answer.
pH stands for Potential Hydrogen.
Any substance’s pH level is defined by its acidity or alkalinity reading on the pH scale of 0 to 14. A reading of 7 is neutral, 0 pH is acidic, and 14 pH is alkaline. The pH level can affect many parameters in virtually all processes and production.
It is an analytical instrument used to measure hydrogen ions in a solution, and the readings are expressed as pH. Some pH meters can also measure other parameters, such as conductivity, Ion concentration, ORP and dissolved Oxygen when combined with the correct probe
The purpose of a pH meter is to measure the voltage between two electrodes, the reference electrode and a pH electrode (glass electrode) and display the converted result as a pH value on a digital LCD screen. The output can be digital or analog, with the devices either battery or line powered.
Usually, there is a glass, a reference electrode, or a combination electrode. A silver chloride electrode or calomel electrode is typically required on each side of the membrane to measure the potential difference between the two sides of the glass membrane reference electrodes.
To prolong your meter’s life span and maintain its accuracy (after calibration), you need to follow some basic cleaning steps.
pH meters are in use across a wide range of industries and sectors, including:
Water Analysis – Testing the water quality in swimming pools, wastewater, a spa, aquarium and drinking water.
Agriculture – Understanding soil, fertiliser, grains, fruit, and vegetables’ pH values is critical for the agricultural industry.
Chemical Industry – just about all manufactured chemicals will have a pH specification that must be checked.
Health Care and Pharmaceutical – Testing blood chemistry, liquid syrups and drugs.
Cosmetics – The pH level is consistently measured during manufacturing to ensure consistency and quality.
Electroplating Industry – The pH level decides the plating quality, and knowing the pH level of pure water is critical in ensuring the pH of the electrolytic bath.
Food and Beverages – Knowing the pH value is vital in the food and beverage industry as it is one of the key factors in controlling the quality of wine, coffee, soft drinks, sauces, jams and dairy products.
To calibrate your pH meter, you will require a pH buffer solution, a standard and inexpensive solution produced at a set pH level. If you plan to take several readings daily, you must calibrate your meter beforehand. However, a weekly calibration will be enough if you only intend to use it 2 -3 times per week.
For accurate calibration, you must use a minimum of two different buffer solutions, spanning the pH values that require measuring and, for general purposes, buffer solutions at pH 4.00 and pH 10.00 are suitable. Some older pH meters only allow adjustment at a single point where modern pH meters allow adjustment at two or three points; this helps ensure linearity across the working range of the meter.
There are 5 key areas you may need to consider when choosing the right pH meter.
Please contact us if you want more information or a quote about our products or services.