Product Description
Change receivers or draw off product without stopping your distillation. Stopcocks on this variable reflux head let you control take-off and keep the column running continuously. It is a practical upgrade for labs that run long fractional distillations. It is reusable after cleaning.
This listing is for Kimble catalog number 518500-2440: Variable Reflux Distillation Head. The head is low-extractable borosilicate glass 3.3 and comes with a glass plug. The lower receiver joint, 29/42, has a drip tip, and the column and condenser top and bottom stopcocks are 135 mm apart. A 10/30 outer side joint accepts a 75 mm immersion thermometer. Hose connections fit 3/8 in. tubing. Add it to your LIGHT LABS order alongside the rest of your glassware and closures.
Key Features
- Stopcock take-off – Remove product or change receivers mid-run.
- Variable reflux – Adjust reflux ratio for better separations.
- Thermometer joint – 10/30 side joint for 75 mm immersion.
- Drip tip receiver joint – Clean delivery into the receiver.
Specifications
| Catalog Number | 518500-2440 |
| Brand | Kimble (DWK Life Sciences) |
| Description | Variable Reflux Distillation Head |
| Sold As | Each |
| Material | Borosilicate glass 3.3 |
| Glass type | USP Type I; ASTM E438, Type I, Class A |
| Receiver joint | Standard taper 29/42 with drip tip |
| Thermometer joint | Standard taper 10/30, 75 mm immersion |
| Stopcock spacing | 135 mm |
| Overall height | 420 mm |
| Width | 200 mm |
| Hose connection | Fits 3/8 in. ID tubing |
Applications
- Fractional distillation
- Solvent purification
- Organic synthesis
- Teaching labs
