I just pulled out my clear IBTanked and filled it with juice. I was looking at it in the light and I noticed a scratch on the glass that is bad enough that I can feel it. I don't know if I did it when filling it as I don't remember laying it on it's side. I checked the other one I got which was still in the container and it's fine. Borosilicate glass shouldn't scratch that easily. I'll have to check with glassgal to make sure though. I work with soda lime glass which is different.
Susan, Borosilicate isn't scratch resistant... it's shock, chemical, temperature resistant. It has the same hardness as soda lime, which is about 5.5 moh... meaning anything harder will scratch it. Steel can scratch boro...
My pornvari for the day (I'm vaping the one on the right now

Cleaner shot of the tank *pats self on the back*:
