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GP-118 Keystone Carbon Sampling Probe performs well in sampling fine metals, chemicals, or similar fine powders that tend to compact. Made of chrome-plated steel with double-tube construction, the outer tube of the probe has a 1in (25mm) outside diameter (opening size) and an overall length of 40.5in (1,028.7mm), a 13in (330mm) auger vane on the bottom, and a T-handle on top to aid augering. The probe’s inner tube has 13 openings with partitions and rotates to close openings for sample removal.
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