I have recently purchased 100 of these 1.5" glow sticks from GlowUniverse. First off, the ordering process was painless and shipping was quick. I was all happy when I got them and found 20 packages of 5 sticks. I got 5 packages of each color, green, blue, pink, yellow, orange. So far I am not pleased with most of the colors.
So far it looks like only the green and pink ones can even compare to what people are used to as far as glow sticks go. The blue, pink and orange are hardly visible from 10ft or further.
Not very useful if they don't put off light. Thumbs down. Good waste of 13 dollars.