The silicone sponge closure is manufactured with a sealed in silicone sponge filter. Flange fits snugly over the necks of vessels permitting the exchange of gases, while reducing evaporation and preventing the passing of aerosols. Ideal for use with aerobic cultures. Reusable, autoclavable and will withstand dry heat sterilization up to 180°. Closure will withstand both dry heat sterilization and repeated autoclaving. CLS-1490-013 fits: 13-18mm Culture Tubes and 18mm Screw Necks CLS-1490-020 fits: 18-25mm Culture Tubes, 25-50mL Erlenmeyer Flasks and 25-125mL Delong® Flasks CLS-1490-028 fits: 125 and 250mL Erlenmeyer Flasks CLS-1490-038 fits: 38mm Delong® Style Flask or Tube Necks, 38mm Culture Tubes, 500 and 1000mL Standard Erlenmeyer Flasks and GL-45 Screw Threads

Items

PQ = Package Quantity, DPrice = Discounted Price

Item Number	Item Description	PQ
CLS-1490-013	Closure, Silicone Sponge, 13mm	P10
CLS-1490-020	Closure, Silicone Sponge, 20mm	P10
CLS-1490-028	Closure, Silicone Sponge, 28mm	P10
CLS-1490-038	Closure, Silicone Sponge, 38mm	P10