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Thermo Scientific's Cap-It Tool is designed to assist with the application of domed caps to tube strips and plates. The tool helps position and press caps into place while reducing the manual pressure required to create an effective seal. Multiple tubes can be sealed simultaneously rather than capping each tube individually. This makes the tool suitable for formats in which domed caps are applied across connected tube strips or plate wells. Its function is focused specifically on cap application and sealing support; tubes, plates and caps are not identified as included components. The product is supplied as one Cap-It Tool. It provides a dedicated manual aid for closing compatible tube strips and plates with domed caps, combining simultaneous sealing with lower required application pressure. Because it applies pressure across several positions at once, the tool is intended to simplify the physical step of fitting domed caps to compatible formats.