Portable Calibration Liquid Baths


The CLB30 & CLB50 Portable Calibration Liquid Baths feature a four digit PV and SV display and a 60mm diameter calibration well with a 190mm depth. The adjustable magnetic stirrer is controlled by a front panel potentiometer for easy control of the stirrer speed, allowing for good circulation within the calibration well to achieve high performance, stability, and uniformity.

Choose between °F and °C models in either low or high temperature ranges.  Both North American and European power cords can be chosen.

Attached handle and screw-top calibration tank lid make carrying easy and spill-free.


Available Temperature Scales

°F or °C


CLB30C: Low Temperature Liquid Bath, °C
CLB30F: Low Temperature Liquid Bath, °F
CLB50C: High Temperature Liquid Bath, °C
CLB50F: High Temperature Liquid Bath, °F

Temperature Range

CLB30C: -35˚ to 165˚C*
CLB30F: -31° to 329°F*
CLB50C: 30˚ to 225˚C
CLB50F: 86° to 437°F

*Minimum temperature is 99°F (55°C) below ambient; absolute minimum is -31°F (-35°C)

Control Sensor

Internal Pt100 sensor for reference temperature measurements

Temperature Stability

CLB30C: ±0.03°C
CLB30F: ±0.05°F
CLB50C: ±0.03°C
CLB50F: ±0.05°F

Temperature Uniformity

CLB30C: ±0.05°C
CLB30F: ±0.09°F
CLB50C: ±0.05°C
CLB50F: ±0.09°F

Screen Resolution

CLB30C: 0.1°C
CLB30F: 0.1°F
CLB50C: 0.1°C
CLB50F: 0.1°F


CLB30C: ±0.3°C
CLB30F: ±0.54°F
CLB50C: ±0.3°C
CLB50F: ±0.54°F

Heating Time

CLB30C/CLB30F: 32˚ to 212˚F (0˚ to 100˚C) - 15 minutes
CLB50C/CLB50F: 77˚ to 428˚F (25˚ to 220˚C) - 42 minutes

Cooling Time

CLB30C/CLB30F: 77˚ to -13˚F (25˚ to -25˚C) - 35 minutes
CLB50C/CLB50F: 428˚ to 212˚F (220˚ to 100˚C) - 35 minutes

Immersion Depth

7.48 inches (190 mm)

Well Diameter

2.36 inches (60 mm)

Well Capacity

0.7 liters

Housing and Assembly


Tank Dimensions

2.36 inch diameter
7.48 inch depth

Unit Dimensions

11.02 inches x 11.02 inches x 16.92 inches (280mm x 280mm x 430mm), with handle.


CLB30C/CLB30F: 28.29 pounds (12.8 kg)
CLB50C/CLB50F: 25.13 pounds (11.4 kg)

Power Supply

100 to 234 Vac, 50 to 60 Hz

Power Cord

North American

Power Consumption

CLB30C/CLB30F: 310 W Max
CLB50C/CLB50F: 320 W Max


Three years, covering defects in materials and workmanship.