We left our media baking under vac and heat overnight and today there is a layer of blue on top of the media. anyone have an idea what this could be?
Media is B80
Azulene?
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I’d think it’s oxidation but this is just weird. Never used before? What heat and vac level?
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A dirty oven and most likely to high of temps
125C is sufficient under vac
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Oven is clean and was baked at 115c
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Looks like a convection oven from the picture, do you have a vacuum oven to dry in the absence of oxygen?
it’s an older AI vacuum oven
It happens. Just scrape the blue and use the rest
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is it possible that the b80 is partially dryed? It could be the fact that the top is dry and underneath it is not.
under vac it would be hard to oxidize.
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I usually get a slight color change on a very thin layer on my B80 aftee baking at 150f at half a vacuum. It is a slight grey, and while noticeable, was never concerning. I just assumed there could have been some oxidation. I’ve never seen anything like the pictures.
looks like my powders after there used a lil
Same. Last time I baked them covered with tinfoil and holes poked in it and it didn’t happen, but this time just open and that’s the result
i bake at 250f in open standard oven never seen anything like it
i wonder what woukd happen if u used it
blue stones?
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