Water-based couplants have long been the default for ultrasonic testing — until they aren’t. When strict no-water specifications are involved, elevated temperatures, or salt exposure; water-based couplants may simply not be an option. That’s where EchoPure comes in.
EchoPure is a water-free, water-soluble ultrasonic couplant formulated to keep inspections moving in conditions where traditional couplants cannot comply.
What does EchoPure offer that water-based couplants do not?
No-Water Couplant Is Specified
Some inspection environments simply don’t allow water-based couplants. EchoPure is water-free and meets requirements for no-water specifications, such as P91, making it a suitable choice wherever water-based couplants aren’t permitted.
No Water Means No Freezing
Cold weather is one of the toughest environments for traditional couplants, which can freeze or form ice crystals well before an inspection is complete. EchoPure stays reliable down to -60°F / -51°C.
That performance makes it especially well-suited to winter weather and applications like refrigerant line inspections, where EchoPure resists frosting and signal attenuation even in extreme cold — helping inspectors maintain a clean, reliable ultrasonic signal even when the temperature drops.
No Water Means Better Performance in the Heat
Heat creates the opposite problem: water-based couplants evaporate quickly and can create steam as temperatures climb, cutting inspection windows short. EchoPure’s broad operating range addresses this, giving inspectors longer working windows on warm welds.
No Water, Fewer Dry Spots
EchoPure delivers excellent transducer lubrication, making it a preferred couplant for Phased Array UT.
By eliminating dry spots beneath the wedge, EchoPure cuts down on the noise and artifacts that can interfere with inspection results. The result is better defect reproducibility and more consistent inspections, scan after scan.
No Viscosity Breakdown
EchoPure is salt stable, resisting breakdown in marine environments or in the presence of corrosion salts — an important advantage for inspectors working in coastal or offshore conditions.
Upgrade Your Inspections
From extreme cold to moderate heat, salt exposure to strict no-water specs, EchoPure will perform where water-based couplants can’t. Upgrade your inspections with EchoPure Couplant.