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Ro-Tap for dry-sieving coarse sediment

By Pacific Coastal and Marine Science Center
A stack of metal pans sit in a metal frame with a ventilation unit behind it, and a hand flips a switch on the machine.
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Detailed Description

At the USGS Pacific Coastal and Marine Science Center, we have 3 WS Tyler RX-29 Ro-Taps that can dry-sieve coarser samples. This machine automatically rotates and taps the stack of sieves, so that smaller sediment falls through to the next sieve. Weighing the sediment trapped in each sieve gives us sediment size fractions.

Sources/Usage

Public Domain.

Sediment and Carbon Laboratory