ZircoFit™ UHPLC Fittings

Are you tired of waiting for expensive capillaries ordered at fixed lengths, when you want to run your next experiment and just need a different sized loop for your micro-HPLC assay?

The solution

The ZircoFit™ system was developed to meet the need of modern-day micro- and nano-UHPLC users for custom-length, high-pressure fused silica connections. Easy to use, functional, and economical, it is unique on the market today.

Now you can have that custom-length (or volume) connection in a matter of minutes. The starter kit contains all the parts needed for ten complete capillary connections and comes in a handy tool case: ZircoFit™crimp sleeves, 1/16″ conical fittings, fused silica capillaries and cutter, PTFE protective tubing, and the ZircoFit™ crimping tool. The latter is a squeezer that fits the sleeves onto the capillaries tight enough that they will not leak at 20,000 PSI.

ZircoFit™ fittings
ZircoFit™ fittings (blank and crimp-fitted) and a matching 1/16″ conical ferrule and nut

How it works

The core of the system is a combination of a PEEK sleeve with a fitted stainless steel collar on one side. Crimped with the appropriate squeezer, this assembly has a much stronger grip on the capillary than what would be possible by only pressing a normal conical ferrule onto a plastic sleeve.

ZircoFit™ Composition
The anatomy of a ZircoFit™ sleeved fused silica capillary

Introductory Video


Watch on YouTube instead (with subtitles)

Ordering Information


Order Code


ZircoFit Crimp Tool



1/16″ ZircoFit Sleeve, 10 mm, 10 pcs



1/16″ ZircoFit Sleeve, 13 mm, 10 pcs



Vici SS Nut 1/16″ and SS 316 Ferrule 1/16″, 10 pcs



10/363 Fused Silica, 5m



25/363 Fused Silica, 5m



50/363 Fused Silica, 5m



75/363 Fused Silica, 5m



Fused Silica Cutter (Cleaving Stone)



PTFE 1×0.5 Protective Tubing, 10m



Starter Kit*



* Starter Kit Contents:

1 pc.

ZircoFit Crimp Tool

10 pcs.

1/16″ ZircoFit Sleeve, 10 mm

10 pcs.

1/16″ ZircoFit Sleeve, 13 mm

20 pcs.

Vici SS Nut 1/16″ and SS 316 Ferrule 1/16″

1 pc.

10/363 Fused Silica, 2.5m

1 pc.

25/363 Fused Silica, 2.5m

1 pc.

50/363 Fused Silica, 2.5m

1 pc.

75/363 Fused Silica, 2.5m

1 pc.

Fused Silica Cutter (Cleaving Stone)

1 pc.

PTFE 1×0.5 Protective Tubing, 5m

1 pc.

Tool case holding all parts of the kit

For quotes and orders, please write to info@prolab.ch.

Adobe_PDF_file_icon_32x32 Download Instruction Sheet

ZircoFit Starter Kit
ZircoFit Starter Kit