Sterile Syringe Filter Nylon Hydrophilic Filtration By Labfil, 20/Pk, 0 Point 45 Product Details 100% integrity tested, individually packaged,Gamma irradiation Diameter:25mm,pore size:0.45um,20/pack Individual expiry date for easy QC tracking Certified non-pyrogenic and biologically safe Note: Recommended for alcohols and weak solvents Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.