Plain NVBC Tube 4Ml with Red Rubber Stopper Only

Red NaturalRubber Stopper|NonVacuum Blood Collection (NVBC)A costeffective primary tube for serum or plasma collection when vacuum draw and proprietary closures are unnecessary.AttributeSpecificationTube MaterialVirgin PET (polyethylene terephthalate) or clear TypeI neutral borosilicate glassNominal Volume4mL (fill line at 3.5mL to allow headspace)Dimensions1375mmStopperSolid red naturalrubber plug, 40ShoreA hardness; ribbed sidewalls for easy gripClosure SealGlidefit friction seal; maintains liquidtight integrity to 95kPaAdditiveNone (plain) tube interior siliconized to minimize platelet & cell adhesionKey Features & Benefits1.NonVacuum Convenience Ideal for manual syringe draws, capillary collections, or veterinary settings where vacuum tubes may haemolyze smallvolume samples.2.Red Rubber Stopper Classic colour convention indicating plain/no additive in many labs; stopper can be pierced by standard 21gauge needles for decanting.3.Chemical Compatibility Natural rubber formulation screened for low extractables; suitable for routine biochemistry, serology, and immunology assays.4.Leakproof Transport Frictionseal stopper plus siliconized inner wall minimizes aerosol formation and adherent clots during courier movement.