Material: PP (90% bio-based), HDPE (screw-on lid), light grey. Sterile Graduated, conical Eppendorf Tubes ® BioBased with screw-on lids and volumes of 5, 15, 25 and 50 ml. They are the optimal solution for cell culture and cell biology applications, as well as for use in microbiology and molecular biology. Temperature resistance: -86 to +100 °C. ISCC PLUS certification (International Sustainability & Carbon Certification) enables traceability across the entire supply chain ACT certification (Accountability, Consistency, and Transparency) - independent validation through My Green Lab ® Batch-specific cleanliness certificates from an independent laboratory can be downloaded from the Eppendorf Internet page, as can general quality certificates regarding compliance with standards and general Eppendorf quality requirements High-quality raw material according to USP class 6 and dispensing with lubricants, plasticisers and biocides during production will guarantee maximum sample integrity The lid with flattened and grooved sides supports user-friendly, ergonomic handling, enables stable, upright positioning and minimises the contamination risk Reliable and secure labelling thanks to a large labelling area on the vessel and a flat, light lid High g-Safe centrifugation resistance up to 25,000 x g High dimensional accuracy for maximum compatibility with centrifuge rotors, mixers and shakers Optimal sample and pellet visibility Sustainability Made from 90% bio-based polypropylene, which is acquired from recycled raw materials, from waste and residues, e.g. from vegetable oil production and from old cooking oil. The use of these Eppendorf Tubes ® BioBased can reduce the product-specific carbon (CO 2 ) footprint of a laboratory. Centrifuge tubes Eppendorf Tubes ® BioBased 50 ml Not a medical device / Not an IVD product