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Sorbent tube, Silica Gel with ultra-low background (2, 4-dinitrophenylhydrazine), 800/200, 10 x 110 mm, sealed ends, 20 pcs
Sorbent Tube, High-purity Silica Gel (ultra-low background), treated with (2,4-dinitrophenylhydrazine), 10 x 110-mm size, 2 sections, 200/800 mg sorbent, 20/40 mesh, with GS ends, WWW separators, fits Type C tube cover, pk/20 Limited shelf-life, refrigerator/freezer storage may be required; contact SKC