Burette - Glass - PTFE Stopcock - B, 50 x 0.1 mlBurette Glass, PTFE Stopcock, B, 50 x 0. 1ml. These burettes are aimed at the price conscious buyer. They are perfect for use in school laboratory's where are broken tip won't set you back a fortune. Borosilicate. Grade B. 50 x 0. 1ml. Straight Stopcock. PTFE Valve.
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