Quickprepare
The plate is placed on the turntable of the spiral inoculator, and the sampler sucks up the bacterial suspension to be measured and then touches the agar surface in the center of the Petri dish. While the Petri dish is rotating, the sampling needle moves from the center of the Petri dish to the side, and inoculates the bacterial suspension onto the agar surface. After inoculation, the cultured colonies were distributed according to the Archimedean spiral and became more and more dispersed with the increase of radius.