-Flat, frosted cap and marking patch on the body of the tube provide generous space for labelling -Simplified opening and closing due to improved neck/cap geometry -Graduated from 0.1 to 1.5ml on the tube body -Autoclavable when open (at 121°C for 20mins.) -Can be centrifuged up to 30000 xg in fixed angle rotors (up to 70000 xg in swing-out rotors) -Compatible with Micropestle