Safe to clean Hanna cuvetts in ultra sonic cleaner?

[SpongeAl]

Also consider storing your cuvettes full of RODI water, as this pretty much eliminates the need to clean them.

[Default]

You can use ultrasonic to clean them but with out adding a surfactant to the water you wont get any cavitation. Glass is 100% safe in an ultrasonic bath though. I personally clean mine with distilled vinegar if they get stained from being lazy and rinse them in RODI.