571 Bottles Aspirator with Screw Cap.

Bottles Aspirator, "JSGW", with Screw Cap, Glass key stopcock with interchangeable joint.

Cat. No. Capacity
  ml.
571/1 1000
571/2 2000
571/2-3 3000
571/3 5000
571/4 10000
571/5 20000

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