PYREX® Pressure Equalising Funnels, cylindrical, graduated, PTFE stopcock key, with ground joints
- Complies with ISO 4800, Type 4
- Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A)
- The funnel stem has a ground cone joint
- Double graduated scale showing volume of liquid contained/delivered
- With interchangeable PTFE key for grease free performance
- Graduations in white enamel
- Supplied with hollow glass stopper
Products
| Catalog No | Capacity (mL) | Graduation Intervals (mL) | Remarks | Joint Size (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 443533 | 50 | 1 | Lowest graduation mark: 5mL | 19/26 | 1 | Find a distributor |
| 443540 | 100 | 2 | Lowest graduation mark: 10mL | 19/26 | 1 | Find a distributor |
| 443547 | 250 | 5 | Lowest graduation mark: 25mL | 29/32 | 1 | Find a distributor |
| 443554 | 500 | 10 | Lowest graduation mark: 50mL | 29/32 | 1 | Find a distributor |
Specifications
Product specifications are found on the product detail pages. Click on the product catalog number in the table above to view the individual product specifications.
Product Overview
These funnels are ideal for the addition of solutions, reagents and/or chemicals to a reaction mixture. Pressure equalising funnels have a narrow-bore glass tube from the bulb of the funnel, to just above the ground glass joint on the stem. This replaces the liquid volume lost in the bulb with the equivalent gas volume from the flask into which the reagent is flowing, and is useful when handling air-sensitive reagents in a sealed, inert-gas environment. Without this tube, or some other means to equalize the pressure between a sealed receiving flask and the bulb of the funnel, the flow of fluid from the bulb will stop.
Products
Products
| Catalog No | Capacity (mL) | Graduation Intervals (mL) | Remarks | Joint Size (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 443533 | 50 | 1 | Lowest graduation mark: 5mL | 19/26 | 1 | Find a distributor |
| 443540 | 100 | 2 | Lowest graduation mark: 10mL | 19/26 | 1 | Find a distributor |
| 443547 | 250 | 5 | Lowest graduation mark: 25mL | 29/32 | 1 | Find a distributor |
| 443554 | 500 | 10 | Lowest graduation mark: 50mL | 29/32 | 1 | Find a distributor |
Specification
Specifications
Product specifications are found on the product detail pages. Click on the product catalog number in the table above to view the individual product specifications.
Product Overview
Product Overview
These funnels are ideal for the addition of solutions, reagents and/or chemicals to a reaction mixture. Pressure equalising funnels have a narrow-bore glass tube from the bulb of the funnel, to just above the ground glass joint on the stem. This replaces the liquid volume lost in the bulb with the equivalent gas volume from the flask into which the reagent is flowing, and is useful when handling air-sensitive reagents in a sealed, inert-gas environment. Without this tube, or some other means to equalize the pressure between a sealed receiving flask and the bulb of the funnel, the flow of fluid from the bulb will stop.
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