The Artificial Substrate Basket is made of one
inch square, 14 gage galvanized wire with a PVC
coating. The cylindrical basket measures 6 1/2" in
diameter and 11" in length. One end is hinged and
tied with a nylon releasable tie. The other end is
permanently fastened to the cylinder. The rocks used
to fill a series of samplers should be of the same
general size, shape, and composition and should be
cleaned by scrubbing with a brush before use.
Angular limestone commonly is used in basket
samplers, although spheres of porcelain or concrete
provide a more uniform substrate. Coniferous tree
bark has been used as a lightweight substitute for
rocks.
If possible, suspend three samplers at a depth of
0.3 m below the surface for experimentally
determined exposure period or for 4 to 5 weeks. In
environments of variable depth, suspend the samplers
from a float.
604-186 Artificial Substrate Basket 5 lbs.
