Emergency Industrial Grade Light Sticks Used for Safety, By Professionals Providing a High Intensity Luminous Glow - Similar to Military Grade Glowsticks - Order Your 12 - 24 Hours , 6" Long, Pack of 10 Today! Premium Chem 6 Inch Light Sticks - Emergency Light Sticks - Extremely Bright! How long do glowsticks last? The 12 hour safety glow light sticks have lasted up to 24 hours. Can they be use for a glow party? Yes, in combination with other lower chemical light sticks. How do they compare to military grade glow sticksor industrial grade light sticks? Superbly! Are your glow sticks toxic? No. Our chem light sticks are often used as fishing light sticks.