Thermo Scientific™ Screw Cap Microcentrifuge Tube Caps

Prevent leakage under demanding conditions with these screw-cap microcentrifuge tube caps with o-rings, which are optimized for secure, short-term storage in low temperatures.

Catalog Number	Mfr. No.	Color	Description	Sterility
14-755-236	Thermo Scientific™ 3471AS	Amber	Screw Cap with O-ring,Amber, E-Beam Sterile, cap only no tube	Sterile, EO Sterile
14-755-237	Thermo Scientific™ 3471BLK	Black	Screw Cap with O-ring, Black, Non-Sterile cap only no tube	Non-sterile
14-755-238	Thermo Scientific™ 3471BLKS	Black	Screw Cap with O-ring, Black, E-Beam Sterile, cap only no tube	Sterile
21-403-544	Thermo Scientific™ 3471B	Blue	Screw Cap with O-ring, Blue, Non-Sterile cap only no tube	Non-sterile
14-755-239	Thermo Scientific™ 3471BS	Blue	Screw Cap with O-ring, Blue, E-Beam Sterile, cap only no tube	Sterile
21-403-545	Thermo Scientific™ 3471G	Green	Screw Cap with O-ring, Green, Non-Sterile cap only no tube	Non-sterile
14-755-240	Thermo Scientific™ 3471GS	Green	Screw Cap with O-ring, Green, E-Beam Sterile, cap only no tube	Sterile
21-403-548	Thermo Scientific™ 3471	Natural	Screw Cap w O-ring,Natrural, Non-Sterile cap only no tube	Non-sterile
14-755-245	Thermo Scientific™ 3471S	Natural	Screw Cap w O-ring,Natrural, E-Beam Sterile, cap only no tube	Sterile
14-755-241	Thermo Scientific™ 3471OS	Orange	Screw Cap with O-ring, Orange, E-Beam Sterile, cap only no tube	Sterile
14-755-242	Thermo Scientific™ 3471P	Pink	Screw Cap with O-ring, Pink, Non-Sterile cap only no tube	Non-sterile
14-755-243	Thermo Scientific™ 3471PS	Pink	Screw Cap with O-ring, Pink, E-Beam Sterile, cap only no tube	Sterile
21-403-543	Thermo Scientific™ 3471R	Red	Screw Cap with O-ring, Red, Non-Sterile cap only no tube	Non-sterile
14-755-244	Thermo Scientific™ 3471RS	Red	Screw Cap with O-ring, Red, E-Beam Sterile, cap only no tube	Sterile
14-755-268	Thermo Scientific™ 3471V	Violet	Screw Cap with O-ring, Violet, Non-Sterile cap only no tube	Non-sterile
14-755-269	Thermo Scientific™ 3471VS	Violet	Screw Cap with O-ring, Violet, E-Beam Sterile, cap only no tube	Sterile
14-755-270	Thermo Scientific™ 3471W	White	Screw Cap with O-ring, white, Non-Sterile cap only no tube	Non-sterile
14-755-271	Thermo Scientific™ 3471WS	White	Screw Cap with O-ring, white, E-Beam Sterile, cap only no tube	Sterile
21-403-546	Thermo Scientific™ 3471Y	Yellow	Screw Cap with O-ring, Yellow, Non-Sterile cap only no tube	Non-sterile
14-755-272	Thermo Scientific™ 3471YS	Yellow	Screw Cap with O-ring, Yellow, E-Beam Sterile, cap only no tube	Sterile
14-755-339	Thermo Scientific™ 3471MIX	Assorted (Black, Blue, Green, Natural, Orange, Pink, Red, Violet, White, Yellow)	Screw Cap with O-ring, Mix, Non-Sterile cap only no tube	Non-sterile
14-755-341	Thermo Scientific™ 3471MIXS	Assored: Black, Blue, Green, Natural, Orange, Pink, Red, Violet, White, Yellow (Amber not included)	Screw Cap with O-ring, Mix, E-Beam Sterile, cap only no tube	Sterile
14-755-247	Thermo Scientific™ 3471TA	Amber	Tether Screw Cap w O-ring,Ambr, Non-Sterile cap only no tube	Non-sterile
14-755-248	Thermo Scientific™ 3471TAS	Amber	Tether Screw Cap w O-ring,Ambr, E-Beam Sterile, cap only no tube	Sterile
14-755-249	Thermo Scientific™ 3471TB	Blue	Tether Screw Cap w O-ring, Blu, Non-Sterile cap only no tube	Non-sterile
14-755-252	Thermo Scientific™ 3471TBS	Blue	Tether Screw Cap w O-ring, Blu, E-Beam Sterile, cap only no tube	Sterile
14-755-253	Thermo Scientific™ 3471TG	Green	Tether Screw Cap w O-ring, Grn, Non-Sterile cap only no tube	Non-sterile
14-755-246	Thermo Scientific™ 3471T	Natural	Tether Screw Cap w O-ring,Nat, Non-Sterile cap only no tube	Non-sterile
14-755-254	Thermo Scientific™ 3471TGS	Green	Tether Screw Cap w O-ring, Grn, E-Beam Sterile, cap only no tube	Sterile
14-755-255	Thermo Scientific™ 3471TO	Orange	Tether Screw Cap w O-ring, Org, Non-Sterile cap only no tube	Non-sterile
14-755-261	Thermo Scientific™ 3471TS	Natural	Tether Screw Cap w O-ring,Nat, E-Beam Sterile, cap only no tube	Sterile
14-755-259	Thermo Scientific™ 3471TR	Red	Tether Screw Cap w O-ring, Red, Non-Sterile cap only no tube	Non-sterile
14-755-256	Thermo Scientific™ 3471TOS	Orange	Tether Screw Cap w O-ring, Org, E-Beam Sterile, cap only no tube	Sterile
14-755-263	Thermo Scientific™ 3471TVS	Violet	Tether Screw Cap w O-ring, Vlt, E-Beam Sterile, cap only no tube	Sterile
14-755-260	Thermo Scientific™ 3471TRS	Red	Tether Screw Cap w O-ring, Red, E-Beam Sterile, cap only no tube	Sterile
14-755-262	Thermo Scientific™ 3471TV	Violet	Tether Screw Cap w O-ring, Vlt, Non-Sterile cap only no tube	Non-sterile
14-755-266	Thermo Scientific™ 3471TY	Yellow	Tether Screw Cap w O-ring, Yel, Non-Sterile cap only no tube	Non-sterile
14-755-267	Thermo Scientific™ 3471TYS	Yellow	Tether Screw Cap w O-ring, Yel, E-Beam Sterile, cap only no tube	Sterile

Description

Prevent leakage under demanding conditions with Thermo Scientific™ Screw Cap Microcentrifuge Tube Caps feature O-Rings to form a secure seal. Optimized for secure, short-term storage in low temperatures, these non-autoclavable screw caps are available in a variety of colors and adapted to your scientific experiments.

Non-Sterile is free of Rnase/Dnase, Human and Mouse DNA, Pyrogen & Endotoxin.
Sterile E-Beam is free of Rnase/Dnase, Human and Mouse DNA, Pyrogen, Endotoxin, ATP, PCR Inhibitor. 
100% virgin polypropylene resin specifically selected for high clarity and biologic applications.
O-ring design, thickness and material selection have been optimized to provide protective features for maximum sealing ability, biologic interaction and temperature capability. The black colored O-ring is made from EPDM. 
Knurled caps improve grip when opening and closing tube.
Frosted cap writing pad for easy product marking and identification.
Color caps offered in multiple color options ideal for separating, coding and tracking samples. Amber colored caps ideal for UV protection of 1.22% transmittance between 220 and 500nm.
Tethered caps remain attached to the sample tube but can rotate completely for convenience — the tethered screw cap is the solution when it is important to maintain the same cap with the same tube. Non-tethered caps available.
RCF range from 18,000 to 25,000 x g.
Temperature Range -80°C to +95°C. Short term storage in      -80°C, -20°C, dry ice and wet ice. Short term storage in vapor phase LN₂ and suitable for a quick dip flash freeze in LN_2.
Torque Manual/Hand Torque: Standard: 0.125 lbsf.in to 2.5 lbsf.in; Metric: 1.412 Ncm to 28.24 Ncm.
Torque Automated/Robotic Torque Standard: 1.312 lbsf.in to 2.5 lbsf.in; Metric: 14.83 Ncm to 28.24 Ncm.

Specifications

• Autoclavable: Not Autoclavable
• Material: Polypropylene, Ethylene Propylene

Screw cap micro tubes and caps are not recommended for autoclave. Sterile options available.
Not intended to submerge and store in liquid phase LN₂.