Thomas Cfp4-090 Cellulose Qualitative Filter Paper, 20-26 Micron,, Pack Of 100 Product Details Qualitative cellulose filter papers perform separation by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media is widely used in methods requiring the determination and identification of particulate in both liquids and gas. Also, this natural fiber filter paper is commonly used to clarify liquid samples. The fastest flow rate demonstrated by any of the qualitative cellulose filter media's resulting in a low retention rate of approximately 20-26 micrometer. Very commonly used as the first media in a multi-stage filtration process. Ideally suited for use in organic extractions and biological fluid separation processes. Often specified in air monitoring applications where the entrapment of fine particulate is not required. Qualitative cellulose filter papers perform separation by entrapping particulate Widely used in methods requiring the determination and identification of particulate in both liquids and gas Very commonly used as the first media in a multi-stage filtration process Ideally suited for use in organic extractions and biological fluid separation processes Often specified in air monitoring applications 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.