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In a clinical laboratory receiving from fifty to eighty urine specimens each morning, any apparatus that lessens the time required to perform a given test soon justifies its initial cost. The apparatus illustrated here was devised for such a purpose. It consists of twelve electric soldering irons mounted in a supporting frame and wired in parallel. Releasing the thumbscrews permits the frame to be raised or lowered, sliding up or down on the two uprights. Adjustable guards prevent the soldering irons from being lowered too far into the liquid. The base is a piece of thick brass, wide and heavy enough to give stability and to prevent the apparatus from tipping. Twelve test tubes (pyrex, 150 by 25 mm.) rest in a movable solid wooden block, which has holes, bored to a depth of about 5 cm., to fit them. Cleats at the rear of the base guide the block so that
Hunter FT. AN APPARATUS FOR URINE ALBUMIN DETERMINATIONS ON A LARGE SCALE. JAMA. 1936;107(5):348. doi:10.1001/jama.1936.92770310001008
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