Thermo Well 24/40 250 mm Stem Made of Borosilicate

The 24/40 Thermo Well with 250mm Stem is a long-stem borosilicate laboratory accessory for use with compatible temperature probes or thermometers. Its standard 24/40 ground-glass joint connects to matching laboratory apparatus, while the 250 mm stem provides deeper insertion than the shorter thermowell options in the Viking Lab Supply glassware range.

Stem length is an important compatibility consideration. Before selecting this 250 mm model, check the internal depth and geometry of the vessel, flask, head, or adapter where it will be installed. The stem should have adequate clearance from stir bars, agitators, vessel walls, heating elements, and other components. The 24/40 joint should only be connected to the corresponding taper size.

The 24/40 Thermo Well with 250mm Stem acts as a protective glass interface; it is not a thermometer and does not establish the accuracy of a temperature reading. Measurement performance depends on the probe or thermometer placed inside it, insertion depth, fit, calibration, process conditions, and the sensor manufacturer's specifications.

Inspect the entire glass stem and ground joint before each use. Chips, cracks, deep scratches, impact damage, or damaged joint surfaces are reasons to remove the thermowell from service. Never force a sensor into the well, and avoid mechanical stress from unsupported apparatus. Borosilicate glass has useful thermal characteristics but should still be protected from inappropriate thermal shock.

Choose the 24/40 Thermo Well with 250mm Stem when the apparatus requires a longer insertion depth. Browse other temperature accessories and laboratory glassware in our Borosilicate Glass Laboratory Equipment collection.