Representative Image

DWK Life Sciences Three-way Complete With PTFE Stopcock, T Drilling 2.5 mm, NS 18.8, DURAN

Bore

Ground size

Material stopcock

Specifications

Compare models
Bore
2.5 mm
Ground size
NS 18,8
Material
Boro 3.3
Material stopcock
PTFE key
UNSPSC
41104812

$147.07

Inc. GST

Available soon

Product description

The DWK Life Sciences Three-way complete with PTFE stopcock, T drilling 2.5 mm, NS 18.8, DURAN is a stopcock designed for shut-off and fine dosing in laboratory glassware, and for building vacuum, inert-gas and nitrogen distribution lines. Polished borosilicate glass 3.3 construction gives excellent chemical resistance and reliable sealing.

Key Features:

  • Brand: DWK Life Sciences
  • Product Type: Stopcock
  • Material: Borosilicate glass 3.3 with PTFE key
  • Ground joint (NS): NS 18.8
  • Operation: Grease-free operation
  • Safety: 3-part tap safety catch secures the plug
  • Application: Shut-off and fine dosing in laboratory glassware, and for building vacuum, inert-gas and nitrogen distribution lines

A DWK Life Sciences stopcock designed to deliver reliability for shut-off and fine dosing in laboratory glassware, and for building vacuum, inert-gas and nitrogen distribution lines across laboratory and research applications.

Compare similar models

Three-way compl. with PTFE stopcock T drilling 2.5 mm, NS 18.8 DURAN

Manufacturer P/N

286419805

Part Number

6.229 948

Manufacturer

DWK Life Sciences​

Bore

2.5 mm

Three-way compl. with PTFE stopcock T drilling 2 mm, NS 14.5 DURAN

Manufacturer P/N

286417804

Part Number

7.300 023

Manufacturer

DWK Life Sciences​

Bore

2 mm

Three-way compl. with SWB stopcock T drilling 2 mm, NS 14.5 DURAN

Manufacturer P/N

286416405

Part Number

7.077 791

Manufacturer

DWK Life Sciences​

Bore

2 mm

Three-way compl. with SWB stopcock T drilling 2.5 mm, NS 18.8 DURAN

Manufacturer P/N

286418406

Part Number

7.077 792

Manufacturer

DWK Life Sciences​

Bore

2.5 mm

Frequently asked questions

It is a stopcock designed for shut-off and fine dosing in laboratory glassware, and for building vacuum, inert-gas and nitrogen distribution lines. Polished borosilicate glass 3.3 construction gives excellent chemical resistance and reliable sealing.

Insights

Explore
Burette vs Pipette: Key Differences and Which to Use

1 min read

Burette vs Pipette: Key Differences and Which to Use

This guide explains the practical difference between a burette and a pipette, two instruments that are often confused because both dispense measured volumes of liquid, but that are built for genuinely different jobs. It breaks down how a burette's stopcock and full-length graduated scale let an operator dispense a variable, watched volume and stop the instant a reaction reaches its endpoint, versus how a pipette (volumetric, graduated or micropipette) is built to transfer one known or pre-set volume in a single action. Rather than presenting the two as competing options, the piece frames them as complementary tools tied to different steps in a procedure: burettes for titration and any reaction where the target volume isn't known in advance, pipettes for sample preparation, dilutions and any step where the volume is already fixed.

Read full story
Top 5 Brands for Graduated Cylinders in 2026

1 min read

Top 5 Brands for Graduated Cylinders in 2026

This guide compares the five graduated cylinder brands most commonly used across Australian laboratories: Hirschmann Laborgeräte (DURAN® glass), Kartell (PMP plastic), ISOLAB Laborgeräte, BRAND (BLAUBRAND®) and VITLAB. Rather than treating graduated cylinders as interchangeable, it breaks down what actually separates them, Class A versus Class B accuracy tolerances, glass versus plastic construction, base stability and certification standards such as USP conformity, and explains which of these differences genuinely matter depending on the work.

Read full story
Top 5 Brands for Erlenmeyer Flasks in 2026

1 min read

Top 5 Brands for Erlenmeyer Flasks in 2026

This guide compares the five Erlenmeyer flask brands most commonly used across Australian laboratories today: DWK Life Sciences (DURAN®), ISOLAB Laborgeräte, LLG Labware, BRAND and Kartell. Rather than treating all Erlenmeyer flasks as interchangeable, it breaks down what actually separates them in practice, wall thickness consistency, thermal shock resistance, neck and closure compatibility, and material choice between borosilicate glass and polypropylene, and explains which of these differences matter for which kind of lab work.

Read full story

$147.07

Inc. GST

MoQ (10)x(10)