Delivery volumes of the 1- and 3-mm pins of a Cathra replicator.

This study was undertaken to determine the volumes delivered by the 1- and 3-mm pins of a Cathra replicator and to evaluate reproducibility. The weight of broth transferred by these pins served to assess the delivery volume. Repeated transfers with the 1- and 3-mm pins showed, on average, a delivery of 0.1 and 2 microliters, respectively.