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SA-18 Plastic Limit Roller meets ASTM and AASHTO requirements and allows for accurate results in Atterberg Limits testing for plastic limit of cohesive soils. The patented design delivers consistent and repeatable performance. The device consists of rigid acrylic top and bottom roller plates separated by 1/8in (3.2mm) side rails. Contact surfaces of the plates are covered with sheets of SAA-9 adhesive-backed absorbent paper that adds no fiber to soil samples. Soil samples are rolled between the movable top and fixed bottom plates until the top plate contacts the 1/8in (3.2mm) side rails, preventing further thread size reduction. SA-18 includes top plate with integral handle, bottom plate, and 50-sheet pad of adhesive paper.
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