This is a 65 lb. (29.5 kg) cable-suspended bedload sampler with 3" x 3" (76 mm x 76 mm) opening and 1.4 expansion ratio. A tailfin arrangement provides flow direction orientation and sliding collar allows adjustment of balance point based on streamflow conditions. The collar is set so that the sampler will touch the water tail first to aid in rapid orientation with the streamlines of flow. This suspension attitude also insures that the sampler orifice will lift up immediately when the unit is raised from the bed to eliminate loss of sample. This sampler uses a style #3 nylon mesh sampler bag.

404-005 US BL-84 84 lbs.

This is a 105 lb. (47.7 kg) cable-suspended bedload sampler identical to US BL-84 except it is heavier for suspension in larger rivers. It also uses the style #3 bag.

404-008 US BL-84C 138 lbs.