There are a number of risks associated with a company using cooking oil that is past its best. A recent Testo study looked at the Frying Oil Quality Curve, which explains each step of the process. As the oil begins to get older, the fried food becomes darker and could feature spotty surfaces. In addition, the fried shell is less crisp and the food absorbs much more oil than usual. This can leave a bitter, unpleasant taste and is also unhealthy because of a higher content of saturated fats. As the cooking oil continues to deteriorate the fried product will start to become hard, oily and the food inside might not even cook properly. This can then cause problems from a food safety point of view. It can also produce a burnt flavour and give off a pungent smell.
Testo’s 270 allows you to determine within seconds whether cooking oil needs changing. To do so, it measures the ‘Total Polar Material’ (TPM) content in the oil, which is a sure indicator of its quality. It will then provide you with a reading and based on the colour of the screen display you will know the current state of the oil.
Using the 270 couldn’t be simpler, just insert the tip into the oil and you will get a reading. Depending on the screen colour you will know if the oil needs changing or not. Green means the oil is perfectly fine, amber is when it’s on the brink, and red means the oil needs changing immediately.
Green = TPM content is good. Amber = TPM value will need changing soon. Red = TPM value has exceeded safe amount.
Storage temperature: -20 to +70 °C
Cooking oil operating temperature: +40 to +200 °C
Operating temperature: 0 to +50 °C
Dimensions: 50 x 170 x 300 mm
Weight: 255 g
Display: LCD, 2-line, backlit
Battery type: 2 AAA micro batteries
Battery life: approx. 25 h continuous operation (corresponds to approx. 500 measurements)
Housing material: ABS / ABS-PC fibre glass 10%
Reaction time: Approx. 30 s
Protection class: IP65
On-site calibration with reference oil ISO calibration by TIS
Alarm function: Upper and lower TPM limit value freely adjustable, visual alarm via 3-colour display backlighting (green, orange, red), values and illumination flash in the display until the measurement is ended (Auto Hold)
Registered As Roland Allen & CO. Registered in England and Wales. No. 00599696. Registered office: Unit 17, Titan Court, Laporte Way, Luton, Bedfordshire, LU4 8EF Tel: 01582 730712 Email: firstname.lastname@example.org