Centrifuge Tube 50ml Screw Cap | Free-standing | Graduated | 25 Pack

This 50ml centrifuge tube is a graduated plastic tube with a screw cap and a flat base, so it stands upright on the bench without a rack. It is supplied as a bag of 25 and is made from PP, with printed graduations and a marking area on the wall for labelling samples. Features and benefits: - Free-standing flat bottom - the tube stays upright on the bench, so there is no need to hunt for a rack when pipetting or weighing. - Screw cap with a leak-proof, tight-fitting lid - helps keep the sample in the tube while it is carried, shaken or spun. - Printed graduations in 5ml steps from 5 to 45ml - read the volume straight off the wall of the tube. - Marking area beside the scale - write a sample name or date directly on the tube. - Clear, smooth side walls - the contents are easy to see against the light. - PP material that resists temperatures from -80 Celsius to 121 Celsius and can be autoclaved at 121 Celsius - suitable for freezing and for steam cleaning between uses. - High density PP gives a chemically resistant surface for common laboratory liquids. Applications: - Spinning samples in a centrifuge with a matching 50ml rotor - Storing and transporting small volumes of liquid in the laboratory or workshop - Mixing and measuring reagents, stains and cosmetic or brewing samples - School science practicals and general sample handling - Freezing samples at low temperature for storage In the box: 25 x 50ml screw cap flat bottom centrifuge tubes in one bag. Note: The graduations are printed by hand measurement and the seller states a 1 to 2mm variation, so use a pipette or measuring cylinder where exact volume matters. Always load a centrifuge with balanced tubes of equal fill, and check the rotor and speed rating before use.