I am interested in the vacuum impregnation of porous rock samples.

Based on my previous experiment with vacuum impregnation of porous rock samples using a large vacuum chamber, I encountered issues with my epoxy (opti-tec 5001, Intertronics) boiling and resulting in numerous bubbles in the samples.

Which brand of resin or epoxy would you recommend to avoid such problems and achieve successful impregnation?

Is there a specific manual or guide available for the vacuum impregnation process?

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