| 摘要 |
A tray has a cover and a plastics or glass body divided by transverse partitions into cells. Each cell is dived by a barrier with its top lower than the partition into a well for bacterial suspension and a second well. The barrier slope up from the first cell at a low gradient to the barrier top and then falls abruptly as the side of the second well. Each second well pref. has two shallow recesses in its base to hold growth media components. The partitions are pref. 2 mm lower than the peripheral wall and the cover has outwardly diverging vent passages. The arrangement facilitates pouring of suspension and prevents backflow from the second cells. |
