Compensator Slider Lambda 6x20 component (part number 473704-0000-000) utilized on all upright ZEISS microscopes (Axio Imager, Axio Scope. A1, Axio Lab. A1). Component used to determine composition of urinary calculi, urinary sediments, bio-crystallates and diagnosis of pathological characteristics in medical applications (e.g.: testing for gout or pseudogout); also used for non-medical scientific research.

Carl Zeiss, Inc. sent an Important Medical Device Corrective Action letter dated December 20, 2013, to all affected customers. The letter identified the product, the problem, and the action to be taken by the customer. Customers were advised that their service provider would contact them to schedule a visit in which a factory trained service technician would install a new Compensator Slider Lambida 6x20. Customers should return the old Compensator Slider to the factory for testing. Customers with technical questions were instructed to call 914-681-7815.