Chemetall’s Ultrasonic Coupling Agensts
Benefits include:
·     Excellent probe coupling
·     Outstanding acoustic transmission
·     Non-toxic
·     Effective corrosion inhibition
·     Use on ferrous and non-ferrous materials
Product	Description
UCA-2/ UCA-2M	As water-based couplants, virtually neutral in reaction, UCA-2/ UCA-2M are suitable for use on metals, painted surfaces, plastics, synthetic and natural rubbers or composites. The products are completely water-soluble and can be easily removed from the surface by rinsing. Alternatively, where the use of water is unsuitable, alcohol or acetone may be used for removal. Used in a wide range of industries, UCA-2/ UCA-2M have passed the demanding requirements of prime operators, engine manufacturers, M.O.D. etc.
UCA-3HT	Specially developed as an ultrasonic coupling agent for field use, where large structures have to be inspected, possibly at elevated temperatures of up to 250๐C. UCA-3HT consists of high-boiling-point silicone fluid incorporating inorganic thickening agents and stabilisers. UCA-3HT offers specific advantages where the inspection of large reaction vessels has to be carried out and when inspection at ambient temperatures is impractical. UCA-3HT is normally applied as a viscous droplet to the tip of the probe prior to contact with the surface to be inspected. It will remain in position without running or drying and will provide excellent acoustic transmission up to the temperatures stated.
UCA-7	UCA-7 is specifically designed as a highly portable and economical alternative to standard couplants and consists of a dry powder blend of water-soluble gelling agents, corrosion inhibitors, wetting agents and fluorescent pigments. The powder forms a thixotropic gel suitable for ultrasonic inspection when added to water whilst stirring. The consistency of the gel can be adjusted to suit by varying the ratio of powder to water as desired.
Ultrasonic Coupling Agents – Typical Properties
		UCA-2/ UCA-2M	UCA-3HT	UCA-7
Applications		General Ultrasonic Applications	High Temperature Ultrasonic Applications	General Ultrasonic Applications
Thixotropic		Yes – Gel	No – Grease-like	No – Viscous Liquid
Fluorescence/Colour		Yes/Blue	No/Colourless	Yes/Red
Removal Method		Water or Solvent	Solvent Only	Water or Solvent
Temperature Range in ๐C		-10/ 50	40/ 250	0/ 50
Sulphur Content		< 50 ppm	< 50 ppm	N/A
Visosity at 20๐C		35 poise	250 poise	42 poise (at 50 g/l)
Density at 20๐C approx.		1 g/cm3	1 g/cm3	0.7 g/cm3  (at 50 g/l)
Available Pack Sizes		200 l / 25 l / 4 x 1 l	4 x 1 l	4 x 1 kg
Comments		Water-Based, Ready-to-Use, May be Diluted	Silicone- & Grease-Based	Powder (Mix with Water)