... speed 1m / s The main characteristics and parameters:1. Sampling head for the numerous porous, so that uniform distribution of micro ... .7. Dimension Φ120 * 300.8. Weight 2kg Structural features1. Sampling head for the numerous porous, so that uniform distribution of micro ... two parts from top to bottom, for sampling the upper part of head, dish Block, sampling pumps, sampling pump, Block, sampling pump ...