Slack Invert Sampling Kit. 500μm .

This sturdy kick net, recommended by the USGS and named after Keith Slack, longtime USGS employee, comes in 500µm mesh with a 60" handle and an open cod end for a bucket. Place it directly on the stream bottom, where it works like a Surber. Includes: 500µm kick net with 60" two-piece handle; 622-6125 sampling  square which marks off 0.25 m2 for quantitative results; 47-D80 Dolphin™ bucket and adapter.