Centrifuge Tubes / Test Tubes Screwcap Tubes (O-ring type) Screwcap with built-in O-ring sold separately* Excluding loop cap type Made of polypropylene and autoclavable. The cap features a built-in silicone rubber O-ring. Maximum centrifugal force: 20,000×G* We use 100% virgin medical-grade polypropylene, and our proprietary design achieves a maximum centrifugal force of 20,000×G (water, 15 minutes).For 0.5 mL tubes, a maximum centrifugal force of 17,000×G. Hygienic small portion packaging A small sterilized package consists of 20 pcs of screw tubes with its caps sealed completely.More hygienic performance is available. Convenient for positioning the tube when centrifugation A marker (notch), which is convenient for positioning the tube during centrifugation and other purposes, is provided on the flange of the tube. Resistant to both pressure and freezing O- ring made of silicone rubber is resistant to the pressure and is suitable for storage in liquid nitrogen (vapor phase) or the deep freezer. 0.5mL Screwcap Tubes Tube: virgin polypropyleneThe lid is sold separately. It is listed towards the bottom of this page. O-ring = silicone rubber (Please loosen the cap and autoclave) Maximum centrifugal force: 17,000×G(water, 15 minutes)Flat top (with marking space)RNase/DNase/Human-DNA free Cat. No.ItemUnitCase139-105-111C0.5 mL Screwcap Tube, Self-standing, Tube Only500 tubes10 bags139-105-111BL0.5 mL Screwcap Tube for Shading, Self-Standing, Tube Only500 tubes10 bags1392-050-SS-LP-C0.5 mL Screwcap Tube Attached Loop Cap, Self-Standing500 tubes10 bags 1.5 mL Screwcap Tube Tube: virgin polypropyleneThe lid is sold separately. It is listed towards the bottom of this page. O-ring = silicone rubber (Please loosen the cap and autoclave) Maximum centrifugal force: 20,000×G(water, 15 minutes)Flat top (with marking space)RNase/DNase/Human-DNA free Cat. No.ItemUnitCase139-115-112C1.5 mL Screwcap Tube, Conical-Bottom,Tube Only500 tubes10 bags139-115-112BL1.5 mL Screwcap Tube for Shading, Conical-Bottom, Tube Only500 tubes10 bags1392-150-LP-C1.5 mL, Screwcap Tube Attached Loop Cap, Conical-Bottom500 tubes10 bags Tube: virgin polypropyleneThe lid is sold separately. It is listed towards the bottom of this page. O-ring = silicone rubber (Please loosen the cap and autoclave) Maximum centrifugal force: 20,000×G(water, 15 minutes)Flat top (with marking space)RNase/DNase/Human-DNA free Cat. No.ItemUnitCase139-115-111C1.5 mL Screwcap Tube, Self-Standing, Tube Only500 tubes10 bags139-115-111BL1.5 mL Screwcap Tube for Shading, Self-Standing, Tube Only500 tubes10 bags1392-150-SS-LP-C1.5 mL, Screwcap Tube Attached Loop Cap, Self-Standing500 tubes10 bags 2.0 mL Screwcap Tubes Tube: virgin polypropyleneThe lid is sold separately. It is listed towards the bottom of this page. O-ring = silicone rubber (Please loosen the cap and autoclave) Maximum centrifugal force: 20,000×G(water, 15 minutes)Flat top (with marking space)RNase/DNase/Human-DNA free Cat. No.ItemUnitCase139-120-112C2.0 mL Screwcap Tube, Conical-Bottom,Tube Only500 tubes10 bags139-120-112BL2.0 mL Screwcap Tube for Shading,Conical-Bottom, Tube Only500 tubes10 bags1392-200-LP-C2.0 mL Screwcap Tube Attached Loop Cap, Conical-Bottom500 tubes10 bags Tube: virgin polypropyleneThe lid is sold separately. It is listed towards the bottom of this page. O-ring = silicone rubber (Please loosen the cap and autoclave) Maximum centrifugal force: 20,000×G(water, 15 minutes)Flat top (with marking space)RNase/DNase/Human-DNA free Cat. No.ItemUnitCase139-120-111C2.0 mL, Screwcap Tube, Self-Standing, Tube Only500 tubes10 bags139-120-111BL2.0 mL, Screwcap Tube for Shading, Self-Standing, Tube Only500 tubes10 bags1392-200-SS-LP-C2.0 mL, Screwcap Tube Attached Loop Cap, Self-Standing500 tubes10 bags Screwcaps for Screwcap Tube Resistant to the pressure and freeze O- ring made of silicone rubber is resistant to the pressure and is suitable for storage in liquid nitrogen (vapor phase) or the deep freezer. Cap: virgin polypropyleneO-ring = silicone rubber(Please loosen the cap and autoclave)Flat top (with marking space)RNase/DNase/Human-DNA free Cat. No.ItemUnitCase139-201CScrewcap with O-ring Clear500 pieces20 bags139-201BScrewcap with O-ring Blue500 pieces20 bags139-201BScrewcap with O-ring Green500 pieces20 bags139-201RScrewcap with O-ring Red500 pieces20 bags139-201YScrewcap with O-ring Yellow500 pieces20 bags139-201BLScrewcap with O-ring Black500 pieces20 bags Product Inquiry ※We also accept inquiries for mass production development of custom shapes, such as OEM and ODM, for plastic products. Contact