Thermostatic Water Bath
Digitally controlled constant-temperature water bath used to condition bitumen and other specimens to the exact test temperature.
NABL TC-14144·
ISO/IEC 17025:2017·
Lab ID NKM/EQ-144

A Thermostatic Water Bath holds specimens at a precise, stable temperature — for example 25 °C for penetration or other specified temperatures — before and during testing. Accurate temperature control is critical for bitumen consistency tests, whose results are highly temperature dependent.
What this equipment tests
- Temperature conditioning for bitumen penetration (25 °C)
- Constant-temperature bath for viscosity / consistency tests
- Specimen conditioning to specified test temperature
Applicable Indian Standards
- IS 1203 — Determination of penetration of bitumen
- IS 1206 — Determination of viscosity of bitumen
Related NABL testing services
Frequently asked questions
Why is a water bath needed for bitumen tests?
Bitumen consistency is strongly temperature dependent, so specimens must be held at exactly the specified temperature — e.g. 25 °C for penetration — for valid results.
Is the temperature digitally controlled?
Yes, with a digital thermostatic controller for stable temperature.