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Hose & Stopper Assembly for Economy Vacuum Extractor is for use with the HM-15 Basic Vacuum Extractor for asphalt binder content determinations. The assembly includes a 6ft (1.9m) rubber vacuum hose to fit 3/8in (9.5mm) OD drain connections, along with a No. 12 neoprene stopper with glass tubing for use with GW-76 4L Filter Flask, purchased separately
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