Flask Pear shape with Two Neck
Product Code : LSK-LF-10427
Flask Pear shape with Two Neck (SKU LSK-LF-10427) is a borosilicate glass flask with a pear-shaped body, a 14/23 centre neck and a side neck set at 25°. The angled side neck lets a thermometer, gas inlet or addition funnel sit beside the main fitting during semi-micro work. It suits organic chemistry teaching and research practicals. Science Lab Supplies takes enquiries for this flask from colleges, universities, tender contractors and distributors and dispatches orders from Ambala, India.
Specifications
The two-neck pear flask is described row by row in the table that follows. In short, the 50 mL version has a 14/23 centre socket and an overall height of 100 mm, with the side neck angled at 25°, and the pear shape keeps a small volume pooled in the base during heating or distillation.
| Specification | Value |
|---|---|
| SKU | LSK-LF-10427 |
| Glass | Borosilicate |
| Body shape | Pear shape |
| Necks | Two (centre and side) |
| Side neck angle | 25° |
| Centre socket | 14/23 |
| Capacity | 50 mL |
| Overall height | 100 mm |
| Side socket size | Confirmed on the quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Two Neck Pear Flask
Two necks allow two things to happen at once: a condenser or still head on the centre neck and a thermometer, inlet or funnel on the angled side neck. For semi-micro synthesis and distillation this makes the flask a practical piece of laboratory distillation apparatus in India.
- M.Sc. and B.Sc. organic chemistry: semi-micro reactions that need a thermometer or reagent inlet beside a condenser.
- Small-scale distillation with the liquid temperature monitored through the side neck and the distillate led off through an Adapter (Alunge).
- Research labs: running small reactions under a gas inlet while refluxing, with gentle heating in a Water bath, 7 L that reaches up to 100°C.
Clamp the centre neck in a Three Prong Glassware Holding Clamp before fitting anything to the side neck, so the angled joint carries no strain.
Standard Scope of Supply
Each order is supplied as a single two-neck pear-shaped flask, as described above. The 50 mL version has a 14/23 centre socket and a 100 mm overall height; any other capacity and the side-socket size are confirmed on the quotation once you state your requirement.
Packing, MOQ and Lead Time
A quotation can be raised for one flask or a batch for a teaching lab, and it shows packing, delivery time and price for that number. Stoppers, adapters and other borosilicate laboratory glassware in India from the same range can be quoted at the same time.
Science Lab Supplies is a registered exporter under an Importer-Exporter Code and is able to ship to buyers in Iraq, Nigeria, Kenya, Ghana, Ethiopia and Tanzania. Describe the fittings you plan to use on each neck through the contact page, park the flask in the enquiry cart with any adapters, or refer to the lab tender page for public procurement.
Frequently Asked Questions
Why is the side neck angled at 25 degrees?
The angle moves the side fitting away from the centre neck, so a thermometer or inlet and a condenser can both be fitted at the same time without touching or straining each other.
How does it differ from the single-neck pear flask?
The single-neck model has one socket only (14/20 or 24/40) in 25 to 200 mL. This flask adds a side neck at 25° and has a 14/23 centre socket, allowing two fittings at once.
What is the side socket size?
The side-socket size is confirmed on your quotation. Tell us the thermometer adapter, inlet or funnel you plan to fit through the contact page, and Science Lab Supplies will confirm the matching size before you order.
Who supplies this flask?
Enquiries for the two-neck pear flask are answered by Science Lab Supplies in Ambala, India, which can quote it singly, in teaching-lab batches or against a tender schedule.
Related Flasks, Funnels and Condensers
These flasks, addition funnels and a condenser from the Laboratory Flasks, Laboratory funnel and Lab Glassware ranges cover single-neck, larger-volume and stopcock versions plus controlled addition and cooling, so a synthesis lab can match each set-up and quote the items together.
- Flask Pear Shape Single Neck — one-neck pear flask, 25 to 200 mL, 14/20 or 24/40 socket.
- Flask Reaction With Glass Stopcock — 50 mL (14/20) or 250 mL (24/40) with a 2 mm glass stopcock.
- Round Bottom Flask, Narrow Neck — borosilicate, 166 mm base diameter, narrow neck with rim.
- Distillation Flask — side-arm flask in 100, 125, 250 and 500 mL for separating liquid mixtures.
- Dropping Funnel Pear Shape PTFE Stopcock — PTFE stopcock, available with stem inside cone, 50 to 500 ml.
- Pressure Equalising Funnels Pear shape — pear shape with socket and stem with cone, 100, 250 or 500 ml.
- Liebig Condenser — straight inner tube in a cooling-water jacket, 200 mm, borosilicate.
Browse the full Laboratory Flasks range, the Laboratory funnel range for addition funnels, or all school lab equipment.
Last updated: 22 October 2026
