Stoppers and Pouring Rings for ISO-Thread Laboratory Bottles

Closure and pouring accessories for ISO-thread bottles. Three materials available to match the chemical and thermal demands of the application: PP for general use, PBTB with PTFE-coated silicone gasket, and ETFE for more aggressive conditions. Colour-coded for rapid sample identification.

Materials and Resistance

• PP (polypropylene): Thermal resistance up to 140 °C — general laboratory use
• PBTB with silicone/PTFE gasket: Up to 200 °C, greater chemical resistance than PP
• ETFE: Up to 200 °C, chemical resistance exceeding that of PP

Selecting the Right Variant

PP stoppers and rings cover most routine storage applications. When the reagent is aggressive or working temperature exceeds 140 °C, PBTB and ETFE models are the appropriate choice — no need to change the bottle.

Colour coding allows sample series to be distinguished at a glance. Particularly useful in high-throughput laboratories or where strict traceability protocols apply.

Technical Specifications

• Thread: ISO standard for laboratory bottles
• PP stopper/ring material: Polypropylene, up to 140 °C
• PBTB stopper material: PTFE-coated silicone gasket, up to 200 °C
• ETFE ring material: Ethylene tetrafluoroethylene, up to 200 °C
• Colours: Multiple, for sample coding

Compatibility

Designed for ISO-thread laboratory bottles. Suitable for storage and transfer of reagents, solvents and samples in chemistry, quality control and research laboratories.