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Thermo Fisher's 0.5 mL Flat Cap Tubes (1000), assorted colours, are individual tubes with integral snap-shut caps. The flat-cap tubes are compatible with 0.5 mL thermal cycler blocks and are suitable for PCR and sample storage applications. Each tube has a maximum capacity of 0.6 mL when closed. The integral cap remains attached to the tube, creating a single-piece format for opening and closing. Assorted coloured tubes and caps provide a visual way to distinguish samples and support sample tracking. The product is supplied as a pack of 1,000 tubes. Its combination of 0.5 mL block compatibility, flat snap-shut caps, 0.6 mL closed capacity and assorted colours provides a clearly specified tube format for compatible thermal cycling and storage procedures. The assorted-colour configuration differentiates this version from single-colour tube options and supports visual identification without changing the stated tube dimensions or capacity.