I am trying to do small scall experiments in which I mix 50 mL of liquid with a powder to leach the powder. The liquid is concentrated formic acid at 95 degrees C. Right after the experiment is over I need to be able to get everything out of the reactor, including a new powder that forms, very quickly before the liquid and powder cool. I can't use water to rinse the solids out of the reactor because I don't want to dissolve them and I would prefer not to rinse with anything at all. The question is what kind of flask should I use and how do I get all the solid out quickly that remains on the walls after I dump all the liquid. I was thinking of an 100 mL Erlenmeyer flask and a flexible Teflon scrapper/spatula but I can't find a scrapper that small and the small ones that I do find I don't think they are flexible. Any thoughts?
You can use vacuum with filter the powder will be collected on filter . The vacuum will be created on the mouth of the flask and all powder will sucked and it will collect on filter that can be used for your further experiments.
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