These racks are clear acrylic completed with polycarbonate posts. 69101 has a capacity to hold 60 petri dishes of 90 mm size while 69102 one can hold 56 petri dishes of 60mm. These racks are very convenient during inoculation, incubation & storage. Visibility from all sides enables the culture to be seen & checked during incubation. Code No.. Particular Packing 69101 rack for 90mm petri dishes 2 69102 rack for 60mm petri dishes