Universal Caps - Seal multiple size tubes with one size cap.
Easy to use, polyethylene caps feature a universal fit. Seal caps with one handed use. Caps provide tight, leak-proof seal for standard glass or plastic tubes.
The innovative design of the Heathrow Scientific Universal Caps fit larger tube sizes inverted and smaller tube sizes upright. Compatible with tube sizes 10 mm, 12/13 mm or 16 mm. Available in Blue, Green, Red, Yellow, White, and lavender. 1000/bg.