1 In Vitro Medical Diagnostic Chemicals and Chemical Products-Namely, Reference Serums; Specific Human Antiserums; Reference and Control Serums for Radial-Immunodiffusion, Immuno-Electrophoresis, and Serum-Protein-Electrophoresis; Laboratory Chemical Products for Standardizing and Controlling Urinalysis Procedure-Namely, Freeze-Dried Urine with Diluent to Be Used in Controlling the Physical, Chemical (Dip Sticks) and Microscopic Analysis of Urine; Rapid Slide Verification Product Kits Consisting Primarily of Reagents, Buffers, Capillaries, Applicator Sticks and Slides; and Laboratory Kits for Medical Diagnostic Use Consisting Primarily of Diluents, Reference Serums, Buffers, and Plates