Each impact-resistant 2 ml tube contains 2 mm glass beads and 2 mm yellow zirconium oxide beads.

• Used to isolate RNA and proteins from bacterial aggregates, biofilms, and whole insects
• Matrix H tubes have yellow caps
• DNase and RNase free

Zirconium oxide has very high density and high tensile strength and hardness, and is effective at breaking very tough and hard samples, including organisms within a tough or dense exterior matrix. This is useful in applications such as isolation of intact organelles, and super-molecular structures where lysis conditions necessitate high impaction but low shearing. The 2 mm glass beads are effective at breaking pathogenic yeast polysaccharide capsules and hyphae inside infected tissue.