Versatile acidity meter tests a range of foods

Food manufacturers use such devices to measuring the pH levels of food as a means of maintaining control over their processes and to maintain the safety of their products.

Measuring the pH levels of food or liquids can tell workers about whether the item, for example fruit, is fresh or not, or whether wine will taste sweet or bitter.

Testo's new pH meter has interchangeable heads, giving food safety workers the ability to use it when testing liquids, semi-solids, for penetration into meat or poultry.

The Testo pH meter can be sued to read pH and temperature values at the same time. Temperature plays a key role in pH measurement because the value may change with the temperature.

The unit's measuring tip can be washed under water tap after it is used, therefore preventing contamination, Australian-based Tesco stated.

With an optional pH electrode attachment it becomes sensitive to hydronium ions. Plus, it features a large volume of gel reference electrodes, guaranteeing a long service life.

Most foods are naturally acidic, with pH value of less than seven out of 14. However, the pH value of a particular food may have a dramatic effect on the type of processing needed to safely preserve it.

Micro-organisms, including yeasts, moulds and bacteria are sensitive to a food's pH. Very low or high pH values will also prevent microbial growth.