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I use the plastic lids attached. Inside the lid is the number 2 which I think means it is made with HDPE. Resists many solvents including acetone from both what I read and my personal experience. The metal lids covered in plastic had many issues.I use these to shake acetone during salvia extracts and also to sore dilute HCl solutions.Just because they work for me does not mean safety is guaranteed, just sharing my experience here. Use caution and adult judgment.
I use the plastic lids attached. Inside the lid is the number 2 which I think means it is made with HDPE. Resists many solvents including acetone from both what I read and my personal experience. The metal lids covered in plastic had many issues.
I use these to shake acetone during salvia extracts and also to sore dilute HCl solutions.
Just because they work for me does not mean safety is guaranteed, just sharing my experience here. Use caution and adult judgment.