Product Description
Isolate the funnel from your reaction or from the pressure equalizing line whenever you need to. Two PTFE stopcocks give you independent control over delivery and venting, which is useful for refilling under inert gas or for holding reagent in reserve until the right moment.
This listing is for Kimble catalog number 634580-0125: KONTES Graduated Addition Funnel, 125 mL. Each cylindrical funnel has a pressure equalizing line, PTFE stopcocks with 821001-0002 plugs, a standard taper joint at the top and a lower drip tip. Graduations are numbered both up and down. Capacities are 50, 60, 125 and 250 mL with 14/20 or 24/40 joints, in low extractable 33 expansion borosilicate glass meeting USP Type I and ASTM E438. LIGHT LABS ships genuine DWK Life Sciences products with knowledgeable support from our Englewood, Colorado team.
Key Features
- Two stopcocks – Independent control of flow and equalizing line.
- Pressure equalizing line – Steady delivery in closed systems.
- Dual-numbered graduations – Track volume added or remaining.
- Drip tip – Clean dropwise delivery.
- PTFE plugs – Grease-free 821001-0002 plugs.
Specifications
| Catalog Number | 634580-0125 |
| Brand | Kimble (DWK Life Sciences) |
| Description | KONTES Graduated Addition Funnel, 125 mL |
| Sold As | Each |
| Glass | Borosilicate glass 3.3 (33 expansion), low extractable |
| Standards | USP Type I; ASTM E438, Type I, Class A |
| Design | Cylindrical, pressure equalizing |
| Stopcocks | Two, PTFE plugs 821001-0002, 2 mm bore |
| Joint sizes | 14/20; 24/40 |
Available Options
- 299311-0050 – KONTES Graduated Addition Funnel, 50 mL
- 634580-0060 – KONTES Graduated Addition Funnel, 60 mL
- 634580-0250 – KONTES Graduated Addition Funnel, 250 mL
Applications
- Air-sensitive reagent addition
- Inert atmosphere chemistry
- Controlled dropwise addition
- Organic synthesis
