Cylindrical Drip Funnel with Glass Stopcock – 50 ml (24/29 × 24/29)

Borosilicate 3.3 Addition Funnel for Controlled Reagent Dosing

The MEIWLABY NF412450 Cylindrical Drip Funnel is a laboratory-grade addition funnel designed for precise, controlled introduction of liquids into reaction systems. Manufactured from Boro 3.3 borosilicate glass, this funnel offers excellent resistance to heat, thermal shock, and chemical attack, making it suitable for routine synthesis and research applications.

Featuring standard 24/29 ground-glass joints on both the top and bottom, along with an integrated glass stopcock, this funnel allows smooth regulation of flow under atmospheric or inert conditions. The compact cylindrical body and protected drip stem design reduce the risk of accidental breakage during setup or operation.

Key Features

• Borosilicate 3.3 glass construction
  High resistance to temperature changes, acids, alkalis, and common solvents.

• Glass stopcock control
  Enables accurate регулиation of reagent addition rate.

• Dual 24/29 ground joints (top & bottom)
  Compatible with standard laboratory glassware assemblies.

• Protected drip stem design
  Stem does not extend beyond the joint, minimising breakage risk.

• Compact cylindrical body
  Ideal for small-volume, controlled additions.

• Clear, ungraduated glass
  Maximum visibility of contents (no scale, no stopper supplied).

Technical Specifications

• Product Name: Cylindrical Drip Funnel with Glass Stopcock

• Model: NF412450

• Capacity: 50 ml

• Joint Size: 24/29 (top) × 24/29 (bottom)

• Exit Width: approx. 24 mm

• Material: Borosilicate glass (Boro 3.3)

• Colour: Transparent clear

• Approx. Size: 32 mm × 140 mm

• Stopcock: Glass

• Packaging: 1 piece per bag

• MOQ: 1 piece

• Customisation: OEM / ODM available

• Warranty: 3 years

Typical Applications

• Controlled reagent addition

• Organic synthesis

• Reflux and reaction setups

• Inert-atmosphere chemistry

• Teaching and research laboratories

Summary

The MEIWLABY 50 ml Cylindrical Drip Funnel provides a compact and reliable solution for precise liquid dosing in laboratory reactions. With its dual 24/29 joints, integrated glass stopcock, and durable borosilicate construction, it integrates seamlessly into standard glassware assemblies and supports accurate, repeatable reagent addition.

An essential accessory for laboratories requiring controlled small-volume transfers with professional-grade durability.