Precision DuNouy Tensionmeter
Provides precise readings of upward interfacial and surface tensions by the ring method to values reproducible within ±0.05 dyne/cm. This instrument is specified for determining interfacial tension of oil against water by the ring method in ASTM Method D971 and solutions of surface-active agents in ASTM Method D1331. It is also specified for testing synthetic rubber lattices in ASTM Method D1417 and determining the surface tension of industrial water and industrial wastewater in ASTM Method D1590. Unit comes completely assembled with torsion wire, platinum-iridium ring. Includes metal case and instructions. Ship wt. 27 lbs.

Interfacial DuNouy Tensiometer
Provides precise reading of both surface and interfacial tensions by the ring method to values reproducible within ±0.05 dyne/cm. This instrument is specified for determining interfacial tension of oil against water by the ring method in ASTM Method D971 and solutions of surface-active agents in ASTM Method D1331. It is also specified for testing synthetic rubber lattices in ASTM Method D1417 and determining the surface tension of industrial water and industrial wastewater in ASTM Method D1590. Graduated dial reads in both directions from zero and a double vernier is provided. The two scales and corresponding verniers have graduations and figures of different colors to indicate whether the measured force is upward or downward. The 6cm ring and its supporting frame are made of platinum-iridium wire and welded. Unit comes completely assembled with torsion wire, 6cm ring and is supplied with metal case and operating instructions. Wt. 27 lbs.