CryoGen® Tubes 1D CLEARLine®

CLEARLine® 1D CryoGen® tubes are designed for the safe storage and traceability of biological samples in cryogenic conditions. Each tube features a unique and consecutive 1D barcode printed directly on the body, allowing efficient sample identification and compatibility with automated laboratory workflows.

The innovative bi-injected screw cap integrates a rubber sealing element directly into the cap during molding, preventing leakage and eliminating contamination risks. This design ensures secure closure and reliable performance even in demanding storage and transport conditions.

Manufactured from premium-quality virgin, medical-grade PP/PE, and free from biocides, plasticizers, and latex. Produced with optimized, high-gloss polished moulds, without incorporating slip additives such as oleamide, erucamide, or stearamide.
The tubes are non-cytotoxic, non-hemolytic and free from heavy metals and animal-derived components. Raw materials comply with USP Class VI and ISO 10993 standards, ensuring biocompatibility.

The tubes are suitable for storage from standard refrigeration conditions (+4°C) down to the vapor phase of liquid nitrogen, supporting cryogenic applications up to -196°C. They are autoclavable at 121°C for 20 minutes and compatible with high-speed centrifugation up to 19,000 x g (14,000 rpm).

Designed for practicality, they include a writing area and printed graduations, and are compatible with automated capping systems. CLEARLine® cryotubes are sterilized (SAL 10⁻⁶) and certified free from human DNA, DNase, RNase, ATP, pyrogens and PCR inhibitors, making them suitable for sensitive molecular biology applications.

CryoGen® Tubes CLEARLine® are certified completely free of human DNA, PCR inhibitors, DNase, RNase, Pyrogens, ATP by our internal laboratory. To download lot-specific certificate see the section certificate on the web site. 

CryoGen® Tubes CLEARLine® certified  as  STERILE  were treated  with  a validated method to provide a Sterility Assurance Level (SAL) of 10^-6. To download lot-specific certificate see the section certificate on the web site. 

Medical grade raw materials: 

Standard code 128 barcode printed on tubes’ body:

• serial-consecutive 
• unique
• human readable characters printed in both left and right hand orientation for easy readability by all users. 

• Use with automatic decapping equipment
• Use with Vial picker 
• Use with Color coded inserts for quick sample identification     

Graduation and writing surface:

Round or self-standing bottom:

Tests performed on CryoGen® Tubes CLEARLine®:

• Test report IATA PI650 CryoGen® Tubes CLEARLine® tubes can be used as primary container for biological samples transport in conformity with packaging Instruction PI650 of the IATA regulations.

• Extractable study on CryoGen® Tubes  The extractable study performed demonstrates that the analysed vials does nor release significant amount of inorganic elements and/or organic substances in ethanol.

• Mutagenicity test – Ames test Under the experimental conditions CryoGen® Tubes CLEARLine® CLEARLine® didn’t showed any genetic mutations on the particular bacterial strain used.

• Validation of packaging system The integrity of the product and the packaging is resulted compliant after an accelerated aging of 5 years.

• Check that there are no holes, deformation  or burrs on both cap and tube
• Serigraphy resistance
• Verification of the correct reading of the bar code
• Verification that the matrix corresponds to the bar code for the 2D CryoGen® Tubes

CE-IVD marked according to the directive on in vitro diagnostic medical devices 98/79/EC – other devices.

• CLEARLine^® certificated Human DNA, PCR Inhibitor, DNase, RNase, Pyrogen, ATP free
• Sterile beta-ray SAL10^-6
• Medical grade raw materials
• Linear Barcode 128, unique and consecutive, printed on each vial
• Bi-injected screw cap eliminates leakage and contamination
• Star shaped top cavity for use with automatic decapper, manual vial picker and coloured cap disk
• Writing area and printed graduations for accurate measurements
• Autoclavable at 121°C steam for 20 minutes
• Centrifuged at: 14.000 rpm – 19.000 xg
• Designed for cryogenic storage of biological samples at temperatures down to -196 ° C
• Fast cap screwing with only one hand
• Locking base features prevents tubes rotating within the rack/workstation during capping and decapping

• Biobanking and Cryobanking
• Biotech and Pharmaceuticals
• Blood and Tissue banks
• Cryogenic storage and transport of biological specimens at temperatures as low as -196°C
• Food industry
• Ideal for biobanking and R&D Labs
• Laboratories and Research

Are CLEARLine® CryoGen®  Tubes CE marked?

Yes, they are classified according to the directive of In Vitro Diagnostic Medical Devices 98/79/EC – other devices.

Are CLEARLine® CryoGen® Tubes be used in accordance with IATA regulations?

Yes, they are. They can be used as primary container for the transport of biological substances (Category B) for air transport in compliance to packaging instruction PI650 of IATA.

Are the CLEARLine® CryoGen®  Tubes of all sizes and shapes free from any animal origin materials?

Yes, they are. In plastic industry many of the polymers include small amounts of stearates derived from fatty acids, but for the manufacturing of CLEARLine® CryoGen®  Tubes we do not use or intentionally add any ingredients of animal origin.

Are CLEARLine® CryoGen®  Tubes  suitable for IVF?

No, they are not classified for IVF (in vitro fertilization) or for working with human cells and human tissue which after frozen cycle applicable back to human.

Do operators prefer to use internal or external thread cap version?

Both closures are used in storage protocols without significant dominance of one in particular.

Do the raw materials used to produce the CLEARLine® CryoGen® Tubes conform to USP Class IV, safe for use for biologics?

Yes, they do.

Does the gasket (a thermoplastic elastomer) complies to the USP guidelines for elastomeric closures for injectable?

Yes, it does.

Does Biosigma performs any Leak test on CLEARLine® CryoGen® Tubes?

Yes, it does. After CLEARLine® CryoGen® tubes have been closed, they are positioned inside a specific container and subjected to a specific pressure to verify the perfect air-tight. The Leak test certificate is available upon request for each lot of production.

For how long the CLEARLine® CryoGen® Tubes are certified as sterile?

CLEARLine® CryoGen® Tubes are guaranteed sterile for 4 years from production date if the packaging is not damaged.

Is it also possible to store CLEARLine® CryoGen®  Tubes in the liquid phase of the liquid nitrogen or it must be done only in the gas phase?

Storage in the gas phase is strongly recommended for security reasons. The immersion of CLEARLine® CryoGen® Tubes in the liquid phase may cause entrapment of liquefied nitrogen inside the vial and lead to pressure build-up, resulting in possible explosion or biohazard release.

Is it available any testing on extractable or leeching performed on CLEARLine® CryoGen® Tubes?

Yes, it is. The extractable study performed on CLEARLine® CryoGen® Tubes demonstrates that the analysed vials does not release significant amount of inorganic elements and/or organic substances in ethanol.

Is there a rule to consider for the CLEARLine® CryoGen®  Tubes filling?

The important thing is that the CLEARLine® CryoGen®  Tubes are not being completely filled, as the liquid may burst the tubes due to the volume expansion caused by the freezing process. Usually laboratories follow the rule that the tube should always be filled up to two thirds. The ideal filling volume corresponds to the upper marking on the scaling of the CLEARLine® CryoGen®  Tubes .

Is there any documents where are indicated details and specifications on the method and process used to sterilize the CLEARLine® CryoGen®  Tubes?

It is available a certificate of sterilization where it is stated that our CLEARLine® CryoGen® Tubes are sterilized by beta rays. The  sterility  assurance  level  (SAL)  defined  and  to  be  used  in  routine  sterilization  in accordance to EN 556-1 is 10-6. Certificates of validated Beta rays treatment are available for download on www.biosigma.com.

What is the test-tube and cap material?

Test-tube is made in medical grade polypropylene and the cap is made in medical grade polyethylene/rubber. The combination of cap in PE and test tube in PP assures a better sealing and makes easier screwing. It avoids the grip effect caused by the use of the same raw material for both components.

What should be considered when storing samples in liquid nitrogen?

The storage of cells at temperatures below -130°C is essential in order to preserve the material unaltered. Many workers achieve that by the use of liquid nitrogen (at –196°C). The immersion of samples in the liquid phase may cause entrapment of liquefied nitrogen inside the vial and lead to pressure build-up, resulting in possible explosion or biohazard release. In order to prevent this, CLEARLine® CryoGen® Tubes should either be stored in the gas phase or they should be frozen and thawed inside an additional protective covering. So when dealing with liquid nitrogen, the following safety precautions should absolutely be taken: wear protective clothing, including protective glasses and cryogenic gloves. If the tubes should be removed from the liquid nitrogen without any protective covering, users should store them for 24 hours in the gas phase and then be removed safely.

Which is that maximum speed centrifugation for CLEARLine® CryoGen® Tubes?

The maximum speed centrifugation for CLEARLine® CryoGen® Tubes is 14.000 rpm.