Quick Answer:The Brass Test Tube Holder (Set of 12) is a classroom pack of 12 spring-action brass holders that grip test tubes of 12 mm to 25 mm diameter while they are heated.
Last updated: 18 October 2026
Key Features
Set of 12 holders.
Polished brass construction.
Self-closing steel spring keeps the jaws closed on the tube.
Takes tubes from 12 mm to 25 mm diameter.
Finger-grip loops for control.
Technical Specifications
Specification
Value
Quantity
12
Material
Polished brass
Mechanism
Self-closing steel spring
Tube diameter
12–25 mm
Handle
Finger-grip loops
How It Is Used
The holder is clipped round the upper third of a test tube so the tube can be heated at an angle over a Bunsen flame, which helps prevent bumping. Its length keeps the hand away from the flame and hot vapour, and the spring jaws hold the tube steady while it is shaken or mixed.
Frequently Asked Questions
What tube sizes fit the Brass Test Tube Holder (Set of 12)?
Standard test tubes from 12 mm to 25 mm in diameter.
Where should the Brass Test Tube Holder (Set of 12) grip the tube?
On the upper third of the test tube, which allows the angled heating needed to prevent bumping.
Institutions and distributors in United States, South Sudan, Guinea, Benin and Iceland can request an export quotation for the Brass Test Tube Holder (Set of 12).
For a quotation on the Brass Test Tube Holder (Set of 12), contact JLab India on +91-8569909696.
