Product Description
Fine-tune the reflux ratio for the best possible fractional separation. PTFE stopcocks let you control how much distillate is returned to the column versus taken off, and you can remove product or change receivers mid-run without stopping the distillation. It is a precise tool for demanding purification work.
This listing is for Kimble catalog number 287630-0000: KONTES Variable Reflux Distillation Head With PTFE Plugs. The head has a 15 mL capacity, 14/20 joints and a 10/18 outer thermometer joint that takes a 75 mm immersion thermometer. Stopcocks have PTFE plugs, and the condenser hose connections fit 1/4 inch ID tubing. Overall size is about 172 mm wide and 280 mm high. Glass is low extractable 33 expansion borosilicate meeting USP Type I and ASTM E438. LIGHT LABS supplies the complete DWK Life Sciences line, including Kimble, Wheaton and DURAN labware.
Key Features
- Variable reflux control – Adjust the take-off ratio with stopcocks.
- PTFE plugs – Grease-free, chemically inert stopcocks.
- Change receivers mid-run – Remove distillate without stopping.
- Thermometer joint – 10/18 joint for a 75 mm immersion thermometer.
- Type I borosilicate – Low extractable, durable glass.
Specifications
| Catalog Number | 287630-0000 |
| Brand | Kimble (DWK Life Sciences) |
| Description | KONTES Variable Reflux Distillation Head With PTFE Plugs |
| Sold As | Each |
| Glass | Borosilicate glass 3.3 (33 expansion), low extractable |
| Standards | USP Type I; ASTM E438, Type I, Class A |
| Joint | 14/20 standard taper |
| Thermometer joint | 10/18 |
| Thermometer immersion depth | 75 mm |
| Plug material | PTFE |
| Hose connection | For 1/4 in ID tubing |
Applications
- Fractional distillation
- High-purity solvent preparation
- Separating close-boiling liquids
- Research purification
