Bring the science of fluorescence and phosphorescence into your classroom and dazzle students with the science of things that glow! These are top of the line phosphorescent particles. that can glow in the dark from 1-5 hours after about 30 minutes of light exposure.
- Non-toxic, non-radioactive, non-flammable, non-volatile.
- No special storage requirements.
- 10g bag supplied.
