Hand-Prepared University-Grade Microscope Slides Includes an illustrated pamphlet with details for each specimen and instructions for working with prepared microscope slides. Manufacturered by Johannes Lieder. LIEDER prepared microscope slides of highest quality are made in laboratories in Ludwigswburg Germanyunder rigorous scientific controls. They are the product of 50 years experience combined with the most up to date techniques. LIEDER prepared microscope slides are delivered on best glasses with fine ground edges of the size 26 x 76 mm (1' x 3'). SLIDE Set/10 Protozoa & One Celled Animals