Tubing

Stainless steel: for extreme pressure

When your system operates under UHPLC conditions above 7,000 psi, stainless steel is usually the only safe option. Although this material is rigid and heat resistant, keep in mind that it is less suitable for metal-sensitive biological samples.

PEEK: for biocompatible high pressure

PEEK is the absolute favourite for analytical HPLC applications. This material is almost as strong as metal, yet remains completely inert and metal-free. This makes it ideally suited for connections where both high pressure and chemical resistance are required.

ETFE (Tefzel®): for gas stability

Unlike FEP or PFA, ETFE is considerably stiffer and has a very low gas permeability. ETFE is the best choice if you want to prevent bubble formation in your fluid lines, or when you need tubing that can take some mechanical abuse.

FEP: for visual control

FEP is the most popular tubing for low-pressure applications where you want to follow the fluid flow visually. It is also the most economical choice for general laboratory use, partly thanks to its high flexibility and excellent chemical resistance.

PFA: for ultra-pure processes

Finally, there is PFA, known for the smoothest inner wall and the lowest extraction values (leaching). This makes it the best choice for trace analysis or when you work with the most aggressive chemicals that would immediately attack other polymers.

Optimising your fluid path?

The right choice of material not only prevents leaks but also minimises the risk of contamination and unexpected downtime. Inacom is happy to advise you on chemical compatibility and the matching fitting combinations for each of these materials.