Urgent please help thermometers are inaccurate

Is this a built in thermometer that's saying 99.5? Those are quite often inaccurate on the cheaper styrofoam incubators. I would trust the separately purchased ones, especially since they are agreeing. Have you calibrated any of these thermometers?
 
Is this a built in thermometer that's saying 99.5? Those are quite often inaccurate on the cheaper styrofoam incubators. I would trust the separately purchased ones, especially since they are agreeing. Have you calibrated any of these thermometers?

Hi thank you for replying I am in desperate need of some advice yes the built in is saying 99.5. I used the ice water method to calibrate one is a brooder thermometer and it read 34 degrees f and the other said 38 I did reasearch and it mentions it should lower to 32 in cold water am I wrong?
 
Yes if you let the ice melt about halfway the thermometers should have said 32. They were off by 2 and 6 degrees so if the one reading 110 was the one at 38 your real temp is 104. That's still far too warm.
 
Yes if you let the ice melt about halfway the thermometers should have said 32. They were off by 2 and 6 degrees so if the one reading 110 was the one at 38 your real temp is 104. That's still far too warm.

Hello I did check them more then once and they stayed reading the same thing so what should I do next? Should I lower the built in incubators temp until the inside thermometers are at a stable 99.5?
 

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