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- The standard 10 position rack accommodates 26 mm diameter tubes but a range of alternative sample racks are available: 21 position racks with 50 mL vials, 24 position racks with 30 mL vials, 40 position racks with 20 mL vials, 60 position racks with 14 mL vials or 90 position racks with 8 mL vials."
