PP Drip Rack Material Performance Virgin PP material, acid & alkali corrosion resistant, anti-aging and non-brittle in humid environments. All-plastic Structure Metal corrosion-free design, ideal for long-term use in humid labs. Integrated Molding High toughness one-piece construction, load-bearing, anti-deformation and anti-tipping. Drainage & Ventilation Reasonable hole layout ensures smooth draining and ventilation, quick drying and mold/bacteria inhibition. https://www.ukenlab.com/lab-accessories/pp-drip-rack