PMA and PMAxx™ dyes are very sensitive to light. Light exposure, even ambient room light, causes a chemical change in the dye molecule. Therefore we recommend that vials of PMA or PMAxx™ dyes only be opened in darkened rooms or very dim light. We always suggest that you perform a small test experiment if you are concerned that a dye may have lost activity.
View more FAQs
Glowing Products for Science™