Kova Plastics by Alltrista System Value Pac 500. Complete with specially engineered microscopic slides, sample tubes, custom pipettes or petters, and collection cups for reliable, simple and effective workflow standardization. Complete urinalysis kit for up to 500 determinations. Package contains: Glasstic Slides 10 (50): A precision manufactured, 10-chambered disposable microscope slide made of optically clear plastic, with hemocytometer counting grid. The Glasstic slide grid is in the focal plane of the specimen, allowing for use over a range of magnifications. Petters (500): A disposable plastic transfer pipette that features a unique lock for one-step, contamination-free decanting, retaining 1.0mL of urine after centrifugation. Economy Tubes (500): Tubes for urine collection and analysis made from break-resistant polystyrene. UOM: 500/CS.