Our economical, replacement Filter Cups are made of durable stainless steel and are for use with Bottom-of-the-Bottle™ filter assemblies. Our easy to use cups have come with a porosity of 10µm and 2µm and are designed for use with the A-550 and A-522 Filter assemblies.

Our Filter Fittings are designed to be used for different applications. Our Inline MicroFilter End-Fitting comes with a PEEK Frit. Our fitting helps to protect your column from particles produced in the sample phase or from pump seal and sample injection valve wear. Filter End Fittings are made of biocompatible PEEK giving it excellent chemical resistance.

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.

Our Inline Filters are specially engineered for inline filtration. It is specifically designed to help prevent particulate contamination from clogging sensitive equipment. It is ideally suited for placement along the flow path line between the pump and injection valve/autosampler. We offer a variety of porosities for your application.

Our Inline MicroFilters effectively protect your column from particles originating in the mobile phase or sample, or from pump seal and sample injection valve wear. We offer these filter with 100% biocompatible PEEK polymer options. It delivers a miniscule 240nL void volume. Two versions are available; direct connect 1/32 inches outed diameter tubing or use MicroTight® tubing sleeves for 70–520μm outer diameter capillary tubing.

Mini MicroFilters deliver effective filtration with internal volumes low enough to ensure reliable chromatographic results — even at nanoliter per minute flow rates! Internal volumes of these encapsulated filters are as low as 85 nL with the micro-screen and 10 nL to 22 nL with the frit disc option. A MiniMicro Filter provides cost effective insurance against column damage.

Our economical Precolumn Filters offer secure protection for analytical columns in HPLC and UHPLC. We offer traditional versions that can successfully connect tubing on both sides and our direct-connect versions attach to the inlet port of most standard columns. All versions feature a 10-32 coned ports for 1/16 inches outer diameter tubing.

Precolumn MicroFilters are specifically designed to directly connect into your microbore or analytical column. Total theoretical void volume is only 0.5 μL (includes frit volume) and the PEEK tubing used in the assembly of these units has a 0.005” (125 μm) ID, virtually eliminating any mixing of the sample with the mobile phase.

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.

Flanged Fittings are and excellent choice for making flanged tubing conntections. They are compatible with most standard 1/4-28 or M6 Flat-Bottom ports. The hard, inert Delrin® (acetal resin) nut has been optimized to resist cross threading or loosening during use, while the TEFZEL™ (ETFE) nuts work well in chemically aggressive environments. Our fittings for 1/16 inches or 1/8 inches outer diameter tubing are supplied with a nut and a 316 stainless steel washer. There are multiple selections of head styles, materials, and colors to choose from.

Flangeless Fittings eliminate the need to flange tubing. This removable and reusable system provides several benefits such as providing flangeless chromatography fittings for observing mixtures and solvents. Flangeless Fittings are easy to use. Just slip the nut and ferrule over the tubing and finger tighten the assembly into your receiving port. Our Flangeless Fitting require minimal downtime because component replacement is quick, taking only a few seconds. Flangeless Fittings systems typically require only one new ferrule at minimal cost when repairing a connection.

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.

Our NanoPort Fittings are specifically for use with NanoPort Assemblies. These assemblies provide fluidic connections for chip-based analysis. They offers strength and consistency needed to make these connection.

Our Super Flangeless Fittings provide the highest pressure holding capability in a flat-bottom fitting system that we offer. Our unique design eliminates loosening of fittings due to tubing twist and holds tight even through vibration. Our high pressure fittings are excellent for tubing assemblies and those times when connections need to be broken frequently.

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.