Originally used for Lyophilizing and storing frozen slices of tissue for quantitative histo-chemistry. Can also be used as a vacuum tube with aluminum holders by Nelson & Wakefield, Journal of Neuropathology & Exper. Neurology, Vol. XXVII, No. 2, April 1968. Joint is 40/50. Aluminum holder measures 25 mm x 90 mm x 3 mm, with two rows of eight, 8 mm diameter holes. Furnished with two microscope slides. Use with 5/18-inch I.D. tubing, size G.
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