Qwork 250Ml Buchner Funnel, Borosilicate Glass Buchner Filtering Funnel With Product Details High Quality - Made of borosilicate glass, it has the advantage of excellent physical and chemical resistant. Medium Frit - The Pore Size is G3, which max. size is 15~40?m . Design: Buchner Funnel is a universal filter with 24/40 standard joint and a capacity of 250ml. It is suitable for use with all types of liquids. Usage: It can be used with filter erlenmeyer flask, filter adapter cones and others; ideal for chemical analysis, petroleum industry, pharmaceutical industry and so on. 100% Satisfied Service - Enjoy a smooth frustration free experience with our 100% Satisfied Service in one Month! 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.