Art. 548 is a tough 12 liters autoclavable tray for a variety of uses. Can hold 18x500 ml or 12x1 lt bottles. Art. 952 is a strong PVC tray for holding sample bottles with base diameter not greater than 22 mm. Ideal for 7 ml (1/4oz) Bijou bottles or specimen tubes. Each of nine rows can hold 12 of such bottles making a total capacity of 126.