Drill samplers for quantification of microorganisms in wood

Two types of novel ?drill-and-collect? devices that take a sample of pulverized wood in a one-step sterile process are described. Sampler no. 1 is a machine-operated cylindrical device equipped with a round boring bit that collects the pulverized wood through two orifices into a sterile vial fixed inside the body of the sampler. Sampler no. 2 is a manually operated device in which a combined action of a standard boring bit and a spring-containing mobile ring collects the pulverized wood into a sterile flask attached beneath the bit. Tests showed that both samplers are useful for the determination of the concentration of microorganisms and of the differential composition of the microflora in wood. These data may be of importance for wood preservation and for the protection of the health of sawmill workers who are exposed by inhalation to different sawdusts containing bacteria and fungi.

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