The Micronic 96-1 Rack can hold 96 individual 0.50ml tubes with TPE Push Caps/ Low Profile Screw Caps. The sample storage Micronic 96-1 Rack, based on the global recognized ANSI / SLAS standards for storage racks, features a laser etched 1D rack barcode on one side and 'Twist-Lock' to prevent tubes from turning during screw (de)capping.