Electroformed nickel tubing

• Variety of sizes for HPLC and GC applications
• Extremely smooth internal surface
• Ideal for transfer lines, loops, and columns

This small bore tubing is made by electroplating nickel over a diamond drawn mandrel in a continuous process. When the mandrel is removed from the tubing, what's left is in an extremely inert and smooth interior surface – an incredible 1 - 2 microinch finish. The mirrorlike interior means that EFNI can be used instead of fused silica glass-lined tubing, or silica-lined tubing. The highly inactive, non-adsorptive surface makes EFNI tubing ideal for transfer lines, sample loops, or columns, or any application which requires minimum carryover potential.

The ID of commercial drawn tubing is typically ± 10% of the nominal size. This variance added to the voids, pits, and striations in the wall leads to a large uncertainty in calculated volumes. Our EFNI tubing is held to ± 0.025 mm of the nominal size, and its microsmooth surface means that the absolute volume can be calculated very accurately.

Electroformed nickel tubing is electrolytically cut, electropolished, and steam cleaned, ready for use.