GL45 pouring rings for ISO bottles – PP / PTFE options | CrystAll

What are VF.IGD1 pouring rings used for?

They are designed to provide cleaner, more controlled pouring on ISO 4796 bottles with a GL45 neck, helping reduce drips during transfer.

Which bottles are these rings compatible with?

They are compatible with ISO 4796 bottles fitted with a GL45 neck, including CrystAll reagent bottles such as VF.IGA1 and VF.IGT1.

What materials are available?

The range is available in polypropylene (PP) for standard use and PTFE for more demanding temperature and chemical environments.

What is the difference between the PP and PTFE versions?

The PP version is intended for routine use and comes in multiple colours, while the PTFE version is intended for high-temperature and more demanding applications.

What temperatures are stated for these materials?

The technical sheet states PP up to about 140 °C, and PTFE as the high-temperature version. The technical line also mentions a higher range up to about 180–200 °C for the corresponding fluoropolymer version.

Are these pouring rings autoclavable?

Yes, they are stated as autoclavable, with sterilisation at 121/134 °C.

Which colours are available in PP?

The polypropylene version is available in blue, orange, yellow, green, grey, white, black and red.

What pack options are available?

The PP rings are available as single units and packs of 10. The PTFE version is also available as a single unit and as a pack of 10.

When should you choose a PTFE ring instead of a PP ring?

A PTFE ring is better suited when the application requires higher temperature resistance or more demanding chemical compatibility. This follows directly from the “high-temperature” positioning stated on the product page.