Polypropylene Open Top Screw Caps w/o Septa-NSC B7807-18

National Scientific Company (Thermo Scientific)

MPN:
B7807-18
Sales Unit:
PACK
Cap Size: 18-400
$15.08
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These polypropylene screw caps won't contaminate samples with syringe needle insertion, unlike phenolic caps that can flake. Open top closures without septa.