Wheaton* Clear PVC Reusable Coliwasas

Uniquely-designed top spin bar and bottom valve plate mechanism provides a positive seal for sample retention along with greater control for releasing the sample. Modular design has added flexibility by allowing the connection of several sections to form a larger sampling unit up to 20 feet. Spin open-top locking handle, insert slowly into drum to collect liquid column, pull top handle to seat bottom valve plate, and spin top handle closed, trapping column in sampler. I.D x O.D (1 3/8 x 1 5/8)