Two-tier, available in four different colours. These versatile racks are autoclavable and can be used dry, in water baths or in freezers. Each rack has an alpha- numeric reference for easy sample identification. Can accomodate 100x1,5 ml tubes with closed caps or without caps, and 50x1,5 ml tubes with open caps. Racks are stackable even when loaded and have (purpose) designed label spaces on each side (for bar coding, etc.).