The PCR tubes used with the SoniBeast™ Cell Disrupter require locking lids.  Due to the very high mixing energies of the SoniBeast, common, non-locking PCR tubes may leak during processing in the SoniBeast.  The Sonibeast PCR tube with a Locking Lid has a small ball flexibly tethered to the vial body which engages a groove in the lid, thus providing confirmation that the tube is securely locked and will remain tightly closed during beadbeating.