

Ultra-Low Temperature Calibration Bath
Conventional -80°C constant temperature baths typically use high-purity alcohol as the medium. Further temperature reduction would significantly increase the kinematic viscosity of alcohol, leading to compromised temperature control stability. The MPtest low-temperature bath can achieve stable temperature control at -90°C even in ambient temperatures up to 30°C (requires switching from high-purity alcohol to industrial alcohol). As an ultra-low temperature metrological verification device for temperature laboratories, it features an aperture diameter of 138 mm (5.43 inches) and a bath depth of 480 mm (18.90 inches), with temperature stability reaching ±0.002°C per 10 minutes. Furthermore, MPtest incorporates unique jet-stream agitation technology with advanced cascade refrigeration technology, achieving both rapid cooling and low-noise operation.
Specifications
Operating Temperature | Alcohol: -90 ℃ to 50 ℃ (-130°F to -112°F) |
Working Area | Diameter 138mm (5.4"), Depth 480mm (18.9") |
Wetted Parts | 304 stainless steel |
Liquid Volume | Approximately 15 liters (3.96 gal) |
Stirring Method | Jet stirring, three-speed adjustable |
Temperature Control Method | Fully digital PID control |
Display Resolution | 0.001 ℃ |
Temperature Stability | ±0.002 ℃ /10min at 0 ℃ (32°F) ±0.004 ℃ /10min at -80 ℃ (-112°F) |
Temperature Uniformity | ±0.003 ℃ at 0 ℃ (32°F) ±0.01 ℃ at -80 ℃ (-112°F) |
Heating Time | 120 minutes from -80°C(-112°F) to 25°C(77°F) |
Cooling Time | 180 minutes from 25°C(77°F) to -80°C(-112°F) |
Operating Voltage | 220VAC±10%, 60Hz (Customizable Technical Specifications) |
Rated Power | Approximately 2300W |
Dimensions | 485mm (19.1") x 435mm (17.1") x 1060mm (41.7") |
Net Weight | Approximately 80 kg (176.4 lb) |