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