Polystyrene auto-analysis sample cups have a conical bottom, recommended for microsampling. May be used with Technicon and most other chemical analyzers (2.0 ml cup also fits Hyland laser-beam analyzer). Has wide-base design to eliminate tipping. Clear, precisely-molded, virgin polystyrene, without cracks or pinholes. Has a smooth, write-on surface. Comes chemically clean. No. 776-000-12 cap fits 0.25, 0.50 and 1.5 ml sample cups.