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.

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.

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.

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.

Our 4 Way PEEK Valves offers three flow-path versions and biocompatible flow paths making it chemically inert and delivering excellent chemical resistance. PEEK and fluoropolymer construction yields a valve as durable as it is economical.There are Standard or Bulkhead Mount versions available. Our valves have a low swept volume and it can withstand pressures to 500 psi (34 bar).

Micro-Metering Valves consistently produce fine control of fluid flow rates. When used with a tee it can reduce outgoing flow to as low as 3.5 µL/min (@ 1 mL/min incoming flow rate with room temperature water). These needle valves are perfect for use with peristaltic pump fluid-transfer applications, mass spectrometry, and fraction collection. Micro-Metering Valves can also be used to regulate gas flow in helium sparging lines and as flow-dependent variable back pressure regulators. Flow path materials are PEEK polymer (valve body, needle) and PTFE (O-rings). The fittings included with the valves are manufactured from PEEK polymer only (10-32 threaded version) and PEEK and Tefzel® (1/4-28 threaded versions). All versions of these valves have 0.020 inches thru-holes.

Biocompatible Shut-Off Valves effectively stop a flow stream quickly. The bodies are manufactured from either PEEK™ or Tefzel® (ETFE) with a rotor, making them highly resistant to chemical attack. Try one of our ETFE valves, which turn at a low torque and hold to 500 psi (34.5 bar). The blue colorant used in some valve configurations has proven not to leach out with most common HPLC solvents. Connect semirigid polymer tubing, such as PEEK or Fluoropolymer e.g., FEP, PFA, with the Flangeless Fittings provided. Soft tubing, such as Pharmed® or Tygon®, may be connected to these valves using our 1/4-28 barbed adapters.

Our Fittings Tools are designed to assist you with your connections. Our Extender Tools are excellent choices to aid it the imperative tightening process. can be used to tighten most of our knurled nuts in hard to reach places. For precise tightening, the extender tools listed with 1/4 inches hex drives are designed to adapt to any torque wrench with a female 1/4 inches socket, such as the VHP-4000 Torque Driver. Our durable wrenches are slotted to fit over 1/16 inches and 1/8 inches outer diameter tubing, and have 1/4 inches and 5/16 inches internal hex ends. Our wrench is designed to engage with the heads of the hex-head fittings most commonly used with our valves and stainless steel fittings. For your convenience, we offer wrenches in three easy to use standard sizes. Our tools also feature FlushNut™ wrenches, used to tighten the FlushNuts. Our Removal Tools are specifically designed to detach LiteTouch® and Super Flangeless™ Ferrules from tubing. Simply slide the appropriate tool blade slot between the lock ring and the ferrule body. With a slight twist, the ring will pop off, releasing the ferrule from the tubing. Please Note: This Removal Tool will not work with the LT-135 Ferrule System.