Ametek's Jofra PTC-125 Cooler and RTC-159 Ultra Cooler calibrators offer a host of innovative features and design improvements. Jofra PTC-125 has a temperature range of -90 ºC to +125 ºC, and features an intuitive, easy-to-use interface. The RTC-159, Ametek’s most advanced reference temperature calibrator, has a range of -100 ºC to +155 ºC. Their patented cooling technology allows the calibrators to fast cool to -80 ºC in 65 to 75 minutes.