Review on 🌡️ PerfectPrime TL0024TT T-Type Thermocouple Probe: -200~260°C / -328~500°F, 2 Meter Long by Joseph Reed

I am finishing my PhD in chemistry and we make many selective traps to capture distillations where we create a vacuum of about 0.1 torr and the synthesis components based on separate volatility. I have to regularly run acetone/liquid nitrogen baths in -20 to -70 degrees Celsius and an error in bath temperature measurement can be catastrophic. These thermocouples are great. I have 6 of these which is more than I need but love the gear. They are very responsive and, as the description says, the read error is around +/- 1C. I calibrated them using pressure to boiling water temperature that day and then just wanted to see what they read for liquid nitrogen. He registered a temperature of -192°C, which is only 4°C at such a low temperature.