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Sorbent tube, Silica Gel with ultra-low background (2, 4-dinitrophenylhydrazine) with built-in ozone scrubber, 150/300/1500, 8 x 115 mm, sealed ends, 20 pcs
Sorbent Tube, High Purity Silica Gel (ultra-low background), treated with (2,4-dinitrophenyhydrazine) with built-in ozone scrubber, 8 x 115-mm size, 3 sections, 150/300/1500 mg sorbent, 20/40 mesh, with GS ends and WWWW separators, fits Type D tube cover, pk/20