1.LWD Infinitive Plan Objective 2.Makes Viewing Field Flatter,Brighter,Contrast Sharper,Living Cell Observing easier Descriptions:Excellent Optical Function with Infinitive Optical System. Innovative Stand structure, Sharp Image Display, Convenient and Special for Viewing Incubating Cell Tissue. Features & Specifications: Quintuple Nosepiece NIB-100 Inverted Biological Microscope