Liquid Analysis

What are the best uses of different liquid analysis tools?

• Conductivity meters are commonly used for hydroponics, aquaculture and freshwater systems in agricultural, wastewater management and water conditioning applications.
• They measure the level of electrical conductivity in a solution to indicate the quantities of nutrients, salts or impurities it contains. The closer a solution gets to distilled water (i.e. extremely pure), the lower its electrical conductivity rating.
• Conductivity meters work by dropping a small two-electrodes probe into the solution, passing a small current from one to the other, and measuring the percentage of current transferred through the liquid medium.


• Hydrometers are most often used in laboratory and testing/conditioning applications.
• They work using a floating weighted bulb attached to a glass tube (rather like a (similar to laboratory cylinder).
• The device takes a density/specific gravity reading from the solution at the point where it breaks the surface.


• pH meters (or potentiometric pH meters) are used in a wide range of industries and applications, from food production and laboratory experiments to municipal water calibration and harsh environment testing.
• They use electrodes to measure the hydrogen-ion level in water-based solutions, indicating the acidity or alkalinity of the liquid via transferred voltage.
• They’re available in various formats, including pocket testers, portable pH meters, bench meters and test kits.


• Refractometers (handheld/digital) are used across the food, agricultural, chemical, and manufacturing industries.
• They measure the concentration levels of aqueous solutions.
• They do this by analysing the angle of light refraction through a few drops of liquid, and plotting it on a refractive index.

We also sell a full range of pH/water analysis strips, kits and calibration solutions, as well as electrodes and other water meter accessories.