Cleaning OSC 2” ZWO Duoband filter

[Startrek]

I usually clean my Televue eye pieces firstly using the hurricane blower a few times , then under a torch light in a dark room , a few squirts of 99% isopropyl alcohol on a microfibre eyewear cloth and lightly wipe in a circular motion from centre to outside , I check with the torch and repeat only once more if necessary
I’m a first time user of imaging filters so would I adopt the same practice for my new ZWO 2” Duoband filter ??
I can’t find anything on the ZWO site for cleaning their filters , so I’m cautious about the best and safest way to clean them
Any firsthand practical advice is most appreciated
Thanks

[Don Pensack]

Pure alcohol should work fine. Be gentle on the inside surface, as the coatings are likely on that surface.
But you need to make certain you do not, ever, rub a dry surface or a surface with dust on it.
They're not THAT delicate, but more delicate than eyepieces. More like primary mirrors.

[Startrek]

Don
Thanks for the advice
Martin