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Tetrahydrofuran (THF), widely used as a mobile phase for GPC, attacks the CTFE valve stems and TFE/propylene o-rings used in the standard Five Valve Cap. This special THF-resistant version has 316 stainless steel wherever the standard system has CTFE, and Kalrez® o-rings in place of the...
The cap body is manufactured from PTFE and is supplied with a TFE/propylene o-ring and a polypropylene screw collar. The connecting threads on the top of the cap use standard 1/4-28 flangeless fittings. Two of the ports have 1/8" through holes, the third port has a 1/16" through hole.
Three holes have 1/4-28 threads top and bottom with 1/8" I.D. holes through to accept 1/8" O.D. PTFE tubing. Body is PTFE. Supplied complete with three 1/4-28 CTFE plugs and a TFE/propylene o-ring.
Our KIMAX®-HQ NMR tubes are our highest quality NMR tubes and are 100% gauged for wall thickness, concentricity and camber specifications. These tubes are ideal for sealing directly to vacuum manifolds, joints or valves. Attached polyethylene caps Sandblasted marking spot OD 4.97...
These viscosity tubes are for rough control work where bubble comparison is made to limit samples of known viscosity. Flat bottomed Durable white ceramic enamel lines at 27 mm, 100 mm and 108 mm from the outside bottom Reference ASTM D1545 Manufactured from 51 expansion borosilicate glass conforming...
Three on-off CTFE valves have 1/4-28 threads top and bottom. Valve body is PTFE. Valve stem material is CTFE. O-ring material for valve stem and lower seal is TFE/propylene.
Columns are supplied complete with glass barrel, 2 end fittings with 20 μm porosity HDPE bed supports, and screw caps Each column is also supplied with 5 feet (1.5 m) of FEP PTFE tubing (1/16” OD with 1.0 cm; 1/8” OD with 2.5 and 4.8 cm), 2 flangeless tubing nuts and 2 flangeless...