Eppendorf Safe-Lock Tubes are the result of 50 years of continuous improvement and development. The hinged Eppendorf Safe-Lock lid provides outstanding protection against unintentional opening during incubation and storage. Trust in the original Eppendorf Safe-Lock Tubes, because your samples deserve nothing but the best.
Eppendorf Safe-Lock Tubes are the result of 50 years of continuous improvement and development. The original Safe-Lock tubes protect your sample with excellent centrifugation stability, feature optimized sealing properties, and reliably prevent sample evaporation. Trust in the original Eppendorf Safe-Lock Tubes, because your samples deserve nothing but the best.
Seal safety! Original Eppendorf Safe-Lock lid!Always recognize the original Eppendorf Safe-Lock Tubes by the “ep” in the lid. The hinged lid on Eppendorf Safe-Lock Tubes provides outstanding protection against accidental opening of tube lids ensuring highest sample protection. This feature is especially important when working with precious samples, or buffers containing detergents such as SDS.
During incubation in a boiling water bath, only the Eppendorf Safe-Lock Tubes remained safely closed. 10 % to 20 % opened lids were found for the tubes of manufacturers S and A, while T and G exhibited more than one–third and V nearly 80 % opened lids – see Application Note 164 for details.
Highest sample integrity!Manufactured without the use of slip agents, plasticizers, and biocides – substances that have been shown to leach from plastic consumables into the sample and negatively affect bio-assay results or measurements, e.g. nucleic acid quantification by photometric measurements at 260 nm – see Application Note 235 for details.
Tests at 30,000 × g have shown that vessels can break during centrifugation. Eppendorf Safe-Lock Tubes are guaranteed to withstand very high centrifugation forces. Depending on the Safe-Lock Tube variant (see table), forces up to 30,000 × g are possible – allowing you to safely centrifuge without sample loss.
Eppendorf Tubes® 5.0 mL 
