Labbox Red PE Test Tube Stopper for Ø12 mm test tubes
The Ø12mm red polyethylene test tube stopper from Astiks is a flange type test tube stopper for sealing 12mm plastic test tubes whilst providing clear visual identification. This red polyethylene test tube stopper helps you colour code tubes by hazard class, project or sample type in busy laboratory environments.
Made from polyethylene, the stopper offers good chemical resistance and impact tolerance for routine bench work. The flanged profile supports a firm push fit into compatible tubes, whilst the broad rim makes it easy to grip with gloved hands. The bright red colour is ideal for highlighting priority samples, control tubes or particular workflows. Designed to fit Astiks TUPP and TUPS 12mm plastic test tubes, these stoppers support consistent closure and organisation across racks and storage boxes. Fit with other 12mm diameter test tubes must be tested before use.
Practical Applications
– Colour coding 12mm tubes for controls, standards or high-priority samples
– Sealing test tubes during transport between benches or laboratories
– Marking tubes containing hazardous or irritant reagents in teaching labs
– Organising batches of QC samples or production checks
– Grouping project specific tubes by colour in racks or trays
Key Features
– Ø12mm flange type test tube stopper in red polyethylene
– Colour helps identify specific sample groups at a glance
– Push-fit closure for quick sealing and removal
– Compatible with 12mm plastic test tubes
– Robust and reusable design for everyday use
Quality & Standards
– Polyethylene construction for toughness and resistance to many lab reagents
– Designed for repeated use in education, research and routine QC laboratories
– Smooth edges to reduce tube damage during insertion and removal
– Intended for non-pressurised use with standard 12mm plastic test tubes
Specifications
– Tube compatibility: Ø12mm plastic test tubes
– Material: Polyethylene (PE)
– Colour: Red
– Design: Flange type push-fit stopper
– Brand: Labbox Astiks
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