I had 10mg vials from 2 different vendors. Both gelled. But they were cloudy when gelled, so I wouldn’t have used them. I am not sure they were completely at room temp and I didn’t try the maintaining a vacuum thing. I wonder if this is why Nexaph only sells 2mg vials. Alpha Biolabs also had difficulty making high concentration vials that wouldn’t gel, but they said they finally got the ph right on the large concentrations.