Self-adhesive Lid Filters - 28mm

These large 28mm self-adhesive lid filters apply to jar lids and tissue culture containers, giving greater air exchange for projects that need it while protecting your culture from contaminant spores and bacteria. The 23mm oleophobic and hydrophobic filter window resists steam breakdown and moisture saturation, and a strong 3M adhesive backing on a transparent base film makes application fast and tool-free. Fully autoclavable. Sized for larger lid holes than our standard filters. Supplied 18 filters per sheet.