Hollow, flow-through plunger with integrated 3-way valve designed for liquid and gases, with a push button on/off valve at the front end. The new Precision Sampling hollow plunger syringe with two integrated valves opens a whole new world of application possibilities: Dispense a viscous sample more easily by introducing it into the rear of the syringe instead of drawing it up through the needle. Eliminate sample-to-sample cross contamination by giving the syringe a thorough cleaning with a rinse introduced through the plunger. Sample continuously without ever withdrawing the needle from the original point of entry. Just close the on/off valve after drawing sample through the needle, and the sample is redirected out the plunger valve as the plunger is depressed. And since whatever you do w...Read more
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