Demulsibility and Foaming: Demulsibility Characteristics of Lubricating Oils • Foaming Characteristics of Lubricating Oils • Foaming Tendencies of Engine Coolants • Herschel Emulsifying

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Foaming Tendencies
of Engine Coolants

ASTM D1881

Foaming Tendencies of Engine Coolants in Glassware.
This test method covers a simple glassware test for evaluating the tendency of engine coolants to foam under laboratory-controlled conditions of aeration and temperature.

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LT/FT-191500/M

Manual Apparatus for Foaming Tendencies of Engine Coolants in Glassware

• Electric heating device 600 W with magnetic stirrer and electronic regulator with relevant temperature sensor A class.
• Glass beaker 3000 ml capacity.
• Graduated glass cylinder 500 ml capacity, 45 mm diameter, 380 mm length.
• Rod with clamp for support the graduated cylinder.
• Internal cylinder cover cap with thermometer support and air-inlet tube made in brass with Ni-Cr treatment with connection to the spherical diffuser ball.
• Analog flowmeter 14-140 nL/h with stainless-steel sheath and graduated glass metering chamber equipped with fine needle regulating knob.

Power Supply

• 230 Vac or 115 Vac, 50/60 Hz

Temperature Range

• Ambient to +250°C

Consumption

• 600 Watt

Accessories - ASTM D1881

• 3087: Compact diaphragm air/vacuum pump.
  • Vacuum and compression application.
  • Flow rate max. 5 l/min.
  • Pressure max. 0.3 bar rel.
  • Ultimate vacuum max. 300 mbar (abs.).
  • Weight 0.85 kg.
  • Dimensions 72 × 72 × 180 mm.
  • Valve material NBR coated.
  • 4 mm connector included.
  • Maintenance free.
  • Power Supply: 220 Vac 50-60 Hz.
• T-AS1C: Thermometer ASTM 1C.
• 012: Digital stopwatch.
• 7096: Certified diffuser stone.
• 5699: Mott metal cylindrical diffuser, tested and verified, ASTM D6082.

Spare Parts

• 1217: Cylinder 500 ml capacity.
• 5547: Air-inlet tube.
• 11241: Washer, pack of 2 pcs.
• 7094: Diffuser stone, not certified.
• 15120: PTFE cover for cylinder.
• 1219: External bath beaker 3 liters.
• 5660: Flowmeter with needle valve, range 14-140 nl/h.
• 3384: Heating plate, 660 W, with magnetic stirring option, 220 Vac.

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