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Burette w/Teflon stopcock

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#208-3 Burette, with Teflon Stopcock, 25ml (Numbered every  1ml with .1ml subdivisions) #208-4 Burette, with Teflon Stopcock, 50ml (Numbered every  1ml with .1ml subdivisions) #208-5 Burette, with Teflon Stopcock, 100ml (Numbered every  1ml with .1ml subdivisions)