The testo 270 cooking oil tester measures Total Polar Material (TPM) content in the oil and displays this as a percentage. As the oil is used, TPM increases. For every deep fried food, there is a point where overused oil will compromise the cooking oil quality and taste and presentation of that food.
TESTO 270 Specifications:
| 
 Measuring range 
 | 
 104° to 392 °F / +40 to +200 °C 
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| 
 Accuracy 
 | 
 ±1.5 °C  
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| 
 Resolution 
 | 
 0.1 °F / 0.1 °C 
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| 
 Measuring range 
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 0.0 to 40.0 % TPM 
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| 
 Accuracy 
 | 
 ±2 % TPM (+40 to +190 °C) 
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| 
 Resolution 
 | 
 0.5 % TPM (+40 to +190 °C) 
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