The 405 Touch and 405 LS microplate washers are now available with patented Verify technology – which the manufacturer says is the easiest, fastest and most reliable way to identify clogged washer manifold tubes. The technology uses an ultrasonic sensor to identify specific clogged dispense and aspirate tubes that can lead to inconsistent washing and assay failure. A pre-programmed quality-control routine fills microplate wells with liquid and confirms the fluid levels. Microplate wells are then aspirated, and the fluid levels are measured again. Any discrepancy in the fluid level indicates a blockage, commonly caused by salt crystal and protein buildups, and the user is alerted to the precise well location.