EchoFLOW™ Fluid Ultrasonic Couplant

EchoFLOW is an AUT fluid couplant that is easy to pump in cold environments and will not boil or evaporate on hot parts up to 240°F / 115°C.  e increased acoustic impedance reduces surface noise on rough surfaces and highly attenuating materials and enhances ultrasound transmission.

EchoFLOW is non-toxic and safe for use in critical environments, such as Alaska’s Arctic Tundra.

  • Pasteurized for product purity
  • High acoustic impedance
  • Low viscosity fluid at -40°F/C
  • Will not harden on equipment
  • Compatible with plastics


  • Non-toxic, non-irritating
  • Contains no heavy metals, harsh surfactants, glycol ethers, nitrites, silicones, dyes or fragrances.
  • Operating Range: -40° to 240°F (-40° to 115°C)
  • Boiling Point: 250°F (121°C)
  • Freezing Point: -51°F (-46°C)
  • Auto-ignition Temperature: 732°F (389°C)
  • Total Halogens: Less than 50 ppm
  • Sulfur: Less than 50 ppm
  • Acoustic Impedance: 2.143 x 105 gm-cm2/sec
  • Specific Gravity: 1.162
  • 1 gallon (US) / 3.8 liter rigid plastic container
  • 5 gallon (US) / 19 liter rigid plastic container