Thermometer, Ground Joint (Cone Type) Manufacturer,Supplier and Exporter in India
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Product Code : SCL-PLE-11626
Quick Answer: The Thermometer, Ground Joint (Cone Type) is a borosilicate glass thermometer with a ground conical joint that fits straight into a distillation head or flask neck. Its bulb sits in the vapour path, and the scale is enclosed inside the glass.
Last updated: October 2026
Key Features
- Ground glass conical joint, e.g. 14/23, 19/26 or 24/29
- Low-expansion borosilicate glass
- Enclosed (inclusion-type) scale protected from fumes
- Stem length below the joint places the bulb in the vapour path
- Graduations of 0.5°C or 1.0°C
- Calibrated for partial immersion in distillation heads
Technical Specifications
| Specification | Value |
|---|---|
| Joint | Standard taper ground glass, e.g. 14/23, 19/26 or 24/29 |
| Material | Borosilicate glass |
| Sensing medium | Red spirit or mercury (model dependent) |
| Range | e.g. -10°C to +110°C or +250°C |
| Scale | Enclosed (inclusion type) |
| Graduation | 0.5°C or 1.0°C |
| Calibration | Partial immersion within distillation heads |
About This Product
In fractional and simple distillation the thermometer seals into the joint of the still head, so students can read the vapour temperature and identify each fraction by its boiling point without vapour escaping round the stem. It fits jointed glassware sets with the matching taper size.
Frequently Asked Questions
Which joint sizes are available for the cone type thermometer?
Examples given are 14/23, 19/26 and 24/29 ground glass joints; choose the size that matches the glassware.
Related: Physics Lab Equipment, Thermometer, Laboratory, Euro Type and Thermometer, Enclosing Type.
For a quotation on the Thermometer, Ground Joint (Cone Type), contact Educational Instrument.
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