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Series A Syringes from VICI Precision Sampling Series A syringes include a sample storage valve incorporated into the nose piece, giving leak-tight operation to 250 psi for gases and liquids. Turn the nosepiece counterclockwise two turns and the valve is closed. Insert the needle through the septum, then start pushing the plunger as you turn the nosepiece clockwise. Carrier backflushing is eliminated, resulting in sharper peaks and better separations. When the plunger is fully depressed, the plunger face comes into firm, flush contact with the bottom of the front packing, forcing essentially all the sample out - there is virtually no compressible dead volume remaining. The very small internal diameter of the needle contributes to the dead volume minimization as well. The positive rear flange plunger stop prevents the plunger from blowing out of the barrel at elevated pressures. Modular construction means that all components may be quickly disassembled for easy cleaning or replacement. In addition to the characteristics which make it unique, the Series A gas syringe has all the standard Pressure-Lok features such as a PTFE plunger tip, PTFE-sealed needle, and ultrasmooth bore. Replacement needles are available. Pressure rated at 250 psi max, gases and liquids. Sizes available: 100 µl, 250 µl, 500 µl, 1 ml, 2 ml, 5 ml, 10 ml
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