Thermo Scientific™ Screw Cap Microcentrifuge Tube Caps

Catalog No.	Color	Product Type	Sterility	Fit for Purpose
21-403-548	Natural	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-236	Amber	Screw Cap with O-ring	EO Sterile, Sterile	Sterile and PCR Ready
14-755-237	Black	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-238	Black	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
21-403-544	Blue	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-239	Blue	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
21-403-545	Green	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-240	Green	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-245	Natural	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-241	Orange	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-242	Pink	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-243	Pink	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
21-403-543	Red	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-244	Red	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-268	Violet	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-269	Violet	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-270	White	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-271	White	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
21-403-546	Yellow	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-272	Yellow	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-339	Assorted (Black, Blue, Green, Natural, Orange, Pink, Red, Violet, White, Yellow)	Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-341	Assorted (Black, Blue, Green, Natural, Orange, Pink, Red, Violet, White, Yellow)	Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-247	Amber	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-248	Amber	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-249	Blue	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-252	Blue	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-253	Green	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-254	Green	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-246	Natural	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-261	Natural	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-255	Orange	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-256	Orange	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-259	Red	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-260	Red	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-262	Violet	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-263	Violet	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready
14-755-266	Yellow	Tether Screw Cap with O-ring	Non-sterile	PCR Ready
14-755-267	Yellow	Tether Screw Cap with O-ring	Sterile	Sterile and PCR Ready

Catalog No. 21-403-548 Supplier Thermo Scientific™ Supplier No. 3471

Description

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.

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

• Product Type: Screw Cap with O-ring
• Autoclavable: Not Autoclavable
• Material: Polypropylene, Ethylene Propylene
• Color: Natural
• Packaging: 500 x pk, 10 pk x cs, 5000 x cs. Single Bagged. ZipLock bag.
• Clean Claims: Non-Sterile Free of: Rnase/Dnase, Human and Mouse DNA, Pyrogen & Endotoxin, ATP, PCR Inhibitor
• Binding Property: Low Nucleic Acid and Protein Binding & Low Enzyme Inhibition
• Max. Torque: Manual/Hand Torque: Standard: 0.125 lbsf.in to 2.5 lbsf.in; Metric: 1.412 Ncm to 28.24 Ncm. Automated/Robotic Torque Standard: 1.312 lbsf.in to 2.5 lbsf.in; Metric: 14.83 Ncm to 28.24 Ncm
• Temperature Range (Metric): Cold Storage: -80° to +95°C. Liquid Nitrogen: Short term Vapor Phase & Quick Flash Freeze acceptable, not recommmended for LN2 submersion storage
• Sterility: Non-sterile
• Max. RCF: 25,000 x g
• Fit for Purpose: PCR Ready

Screw cap micro tubes and caps are not recommended for autoclave. Sterile options available.

Not intended to submerge and store in liquid phase LN₂.