Marketlab SecurTainer II Specimen Containers provide reliable, tamper-evident collection, transport, and storage for histology and clinical pathology samples. Featuring an automatic locking screw cap with an audible click, the sealing ring secures firmly over the container threads without requiring a manual locking tab and detaches upon opening to clearly indicate sample integrity. Manufactured from virgin, shatter-resistant polypropylene with polyethylene closures—and completely free of plasticizers, mold release agents, and natural rubber latex—these 95kPa-compliant straight-sided containers stack efficiently and accept optional Capinserts for streamlined color coding.