Our unique Two-Piece Fingertight Fittings feature a separate ferrule. With a two-piece design, you can replace just the ferrule instead of the entire unit, making these Fingertights more economical than the one-piece version. Use a standard knurled head fitting for traditional fingertight applications, or use a fitting with wings built into the head for extra tightening leverage. 

Our uniquely designed Bottom-of-the-Bottle Filters effectively protect your system by filtering out particulate matter that my otherwise damage expensive hardware. Our durable stainless steel specifically designed to allow solvents to be drawn from within 1/8 inches of the bottom of your bottle. Our UHMWPE version allows tubing to pass through to the bottom of the filter cup, enabling the filter to draw solvent from within 0.10 inches (2.5 mm) of the bottom of your solvent bottle. This widely known and durable polymer is an economical choice. Our PEEK version is biocompatible and includes two built-in PEEK frits. Our PEEK frit (2 μm or 10 μm) will draw solvents from within 0.080 inches (2.0 mm) of the bottom of the solvent bottle. The 2μm frit on the side may be used for a 1/8 inches outer diameter helium sparging line.

We offer general use, preparative and specialized versions of Inlet Solvent Filters for many applications. Our filters come in stainless steel and polymer versions for excellent chemical compatibility. We provide a wide selection of porosities and materials to meet your system requirements.

Mini MicroFilters deliver effective filtration with internal volumes low enough to ensure reliable chromatographic results — even at nanoliter per minute flow rates! 

Biocompatible Semi-Prep Filters consist of a stainless steel body, two PEEK end fittings, and a separate PEEK frit. These filters are ideal for many higher flow analytical, semi-prep and preparative applications. Best of all, if the filter becomes clogged, simply unscrew the assembly, remove the frit and replace it. The frits are interchangeable.

Metric Flangeless Fittings offer the same benefits as our Flangeless Fittings with the additional feature of being used for metric tubing and ports. They are specifically designed to connect 1.8, 2.0, 2.5, 3.0, or 4.0 mm outer diameter tubing to flat-bottom ports when paired with the appropriate M6, 1/4-28, or 5/16-24 Flangeless Nuts. We also offer M6-threaded nuts to connect 1/16 inches or 1/8 inches outer diameter tubing, plus a tubing sleeve to facilitate 1.0 mm outer diameter tubing connections.

The dual compression created by the specially designed nut and ferrule enables the SealTight Fittings system to outperform standard finger tightened fittings. The forward cone of the SealTight Ferrule provides gripping power and a leak-free seal via conventional compression by the receiving port. The slotted end creates the second compression zone in conjunction with a SealTight Nut.

In many applications, there is a need to limit the fluid flow to one direction. Check valves are the perfect solution for this need. Several versions are available, including our standard check valves, our non-metallic check valves, and even some specialized luer-based check valves. Check Valves are designed to effectively deliver a low cracking pressure. Most of our Check Valves connect directly to any 1/4-28 flat-bottom port. We created this unique design to eliminate the need for additional tubing cuts and connections to install traditional check valves. They accept fittings with 1/32 inches, 1/16 inches, 1/8 inches or 1.0 to 3.0 mm outer diameter tubing.