50-pack Photochromatic UVC measurement cards change color from light orange, to dark orange, to pink, for 25, 50 and 100 mJ/cm2 doses respectively. Includes instruction card and clear plastic bag.
50-pack Photochromatic UVC measurement cards change color from light orange, to dark orange, to pink, for 25, 50 and 100 mJ/cm2 doses respectively. Includes instruction card and clear plastic bag.
