The Seed Bead kits are used to create a seed stock for performing subsequent seeding experiments. The Seed Bead kits contains 24 Seed Bead Tubes, a special 1.5 ml microcentrifuge tube, shaped to maintain the seed in the sample during mixing. Each tube is configured with a PTFE, Stainless Steel, Zirconium Silicate Ceramic, or Glass Seed Beads.