Categorized | Liquinox, Optical

Ultrasonic Cleaning of Optical Devices

Q. Ultrasonic and forced DI water are not removing particles from the optical devices. We suspect that the particles are charged and that is playing a role in the difficulty of removing them. Rusting isn’t a problem but oxidation might be. Al, Ti are metals in the devices we use. The cleaning is followed by chemical etching so this can be an issue.

A. We recommend a warm 1-2% Liquinox® Critical Cleaning Liquid Detergent solution clean (circa 120°F/50°C, 1.25- 2.5 oz/gal or 10-20 mL/L) in ultrasonics followed by a thorough rinse for removing particulates from optical substrates. Liquinox detergent is an excellent wetting agent and dispersant that will enhance the ability to remove particulates over water and ultrasonic energy alone.

Using gentle cleaning methods like sonication with a powerfully emulsive, yet very mild cleaner like Liquinox detergent, can be more effective and safer on optical devices than forced DI water impingement.

To request any Alconox, Inc. detergents for free, please complete the questionnaire at Get Sample. For more information about any one of our Alconox, Inc. detergents, consult the technical bulletin for each product. Or click here to access each of our detergent’s Safety Data Sheets.

Do you have a critical cleaning question for the experts at Alconox, Inc.?  Search TechNotes to see if it’s been answered before or Ask Alconox.

Contact us any time: cleaning@alconox.com