Learning: Science Lab Equipment & Supplies Analytical Test Apparatus - LG-10805-104 - Entrained Air Indicator Stopper Assembly. supplies. stopper. test. apparatus. Lab Equipment amp Supplies Analytical Test Apparatus. entrained. equipment. learning. indicator. 104. assembly. 10805. analytical. science. lab. air. lg
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Used for quick field determination of air content in fresh concrete batches. Stem of the precision bore tube is graduated to read percent of air per cubic foot of concrete. Complete unit consists of the glass tube and a rubber stopper assembly with a brass cup attached to hold the cement sample.