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Cooking oil tester

French fries, chicken nuggets or donuts: Fried food tastes good and is popular all over the world. For a consistent quality of the fried food, a regular exchange of the cooking oil is necessary. But beware: If the oil is changed too late, the oil is already contaminated by degradation products, and the flavour suffers. Changing the oil too early, on the other hand, has a noticeable effect on costs, especially in view of the steep rise in the price of vegetable oil.

Because every drop is precious

With the cooking oil tester testo 270 you can determine the quality of the cooking oil with a simple measurement - and thus the ideal time to change it. In this way you save oil – and costs – ensuring a consistently delicious frying flavour.

This is what the testo 270 cooking oil tester offers you

  • Illuminated display colour with intuitive alarms based on the traffic light principle

  • Ergonomic design for safe handling (sufficient distance to the hot oil)

  • Washable under running water

  • Certified according to HACCP International, NSF and BVLK

Cooking oil tester and accessories

For us, quality has top priority! Since we started using the testo 270, we always have full transparency that the frying oil is still good and at the same time we can use it significantly longer without compromising on quality. As a result, we have seen cost savings of 30 to 40 % on oil. A win-win situation for us: Ensuring quality and saving costs at the same time!

Leon Greiner


General Manager Quick Service Restaurant Stepanek, Laufenburg

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The right frying oil test

In contrast to a cooking oil test strip, measurement using a cooking oil tester is more intuitive and reliable, above all providing reproducible, comparable measuring values. A dye is applied to a cooking oil test strip and this changes colour accordingly in contact with the oil. Comparison with a table enables you to know how the quality of the oil is doing. However, because cooking oil strips measure the free fatty acid content and this varies during frying, caution must be exercised here.

How do I test frying oil with the testo 270?

  • The frying oil test is extremely easy with the testo 270 cooking oil tester:

  • Remove the fried product and wait until there are no more bubbles visible in the oil.

  • Switch on the cooking oil tester.

  • Immerse the cooking oil tester in the hot oil and measure.

  • Read off the TPM value - job done.

Measurement with the testo 270 cooking oil tester

You can achieve better measurements and consistently precise measuring values with the testo 270. This is how it works: as soon as the fried product has been taken out and there are no more bubbles rising in the oil, you know there is no longer any water contained in it and the measurement can begin. Both water and any fried products would falsify the measurement. First, pay attention to the immersion depth. This is ideally between the min. and max. markings on the probe. Just like when checking the oil level for a car. A minimum distance of 1 cm should be adhered to between the probe and any metal components of the deep fat fryer. Small circular movements in the oil make the frying oil test quicker.

When you use the testo 270 frying oil measuring device in the Auto-Hold mode, the display flashes until the measurement is completed. As soon as the display stops flashing, it shows the Total Polar Materials component. Interpretation of the value is particularly easy thanks to the background illumination of the display:

  • Green (less than 20% TPM): all OK

  • Orange (between 20 and 24%): the oil is still OK. However, you should think about replacing it.

  • Red (more than 24% TPM): the oil must be replaced

Incidentally, cooking oil develops its best potential between 14% and 20% TPM: the oil is safe and the fried products taste particularly good.

pH meters

There is a direct correlation between the pH value of a food and the growth of microorganisms. Rule of thumb: the lower the pH value, the harder it is for germs to multiply.

With bakery products, a pH meter can provide valuable services in terms of assessing quality and consistency.

However, the pH value is crucial for raw and cooked meats: taste, colour, tenderness and shelf life are vitally dependent on this.