Identify samples quickly with Thermo Scientific™ Nalgene™ PPCO Micro Packaging Vial Closures for 4.5 mL Vials, offered in green, white or natural. Polypropylene polymer closures are ready to use and have no O-ring to fall out or contaminate contents. Fea
Identify samples quickly with Thermo Scientific™ Nalgene™ PPCO Micro Packaging Vial Closures for 4.5 mL Vials, offered in green, white or natural. Polypropylene polymer closures are ready to use and have no O-ring to fall out or contaminate contents. Fea
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