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From: Virginia Rockwood (wckdstpm_at_TeacherArtExchange) Date: Tue Apr 20 2004 - 04:56:12 PDT
Jean,
I also use synthropol when I dye with my students. I've had a bottle for about the same amount of time with no problems at all with the plastic bottle. You might want to check with the company who sold it to you; they might have more information.
Ginny Rockwood
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