The cooking oil tester testo 270 measures the quality of cooking oil easily, quickly and with reliability. The new testo 270 has an ergonomic design, which prevents the direct exposure of the hand to the hot oil.The clear alarm via the colored backlit display makes it easier to evaluate the cooking oil quality: Green would means the TPM content to be acceptable. Orange: TPM value is borderline. Red: The TPM limit has exceeded the acceptable limits and the oil should not be used anymore.