Whatman 10406970 White Me24 Mixed Cellulose Ester Gridded Filter Membrane, 47mm

US $130

USA, United States
Jun 12th

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Whatman 10406970 White ME24 Mixed Cellulose Ester Gridded Filter Membrane, 47mm Circle with 3.1mm Black Grid, Sterile, 0.2 Micron (Pack of 100) Item Description Eased counting process Sterile options available for critical applications; excellent contrast for easier particle detection Grids are nontoxic and do not inhibit bacterial growth, ensuring sample integrity Black plain and black gridded membranes have a mix of cellulose nitrate and cellulose acetate The membrane offers a high degree of internal surface area for greater adsorption of product Features Whatman mixed cellulose ester membranes are composed of cellulose acetate and cellulose nitrate. These membranes are characterized by a smoother and more uniform surface than pure nitrocellulose filters. Also, the color contrast provided by the filter surface facilitates particle detection and minimizes eye fatigue. The me range has a lower cellulose acetate content compared to the WME range of membranes. In microbiological colony counting procedures, the color contrast between the surface and the colonies facilitates the counting process. Many microbiological techniques include colony counting after incubation as the standard method of quantification. Whatman gridded filters have clearly defined grid lines spaced at 3.1 mm or 5 mm intervals. The special ink used is nontoxic and completely free from bacterial growth inhibitors. Whatman black mixed cellulose esters are available plain for automatic colony counting applications, as well as gridded to assist in manual counting procedures. Black membranes provide contrast between residue or cell colors and the filter without having to counter-stain the membrane. For those laboratories preferring to use membranes sterilized by autoclaving for microbiological work, whatman provides black gridded membranes in packs with pads ready for laboratory autoclaving. The membrane is particularly effective in applications requiring higher flow rates and larger volume filtration including clarification or sterilization of aqueous solutions, particulate analysis and removal, air monitoring and microbial analysis. Higher dirt loading capacity. Biologically inert with good thermal stability. No surfactants to contaminate samples. Uniform microporous structure of membrane gives high flow rates. Thermally stable. Burst strength: > 10 psi. Weight: 4.3 to 5.0 mg/cm square. Porosity: 74 to 77 percent. 2.8 bar Bubble point. Additional Information Manufacturer: Whatman Shipping Weight: 45 Product Dimensions: Width: 3.20 Length: 3.40 Height: 2.00 Shipping Details Depending on your location and on package weight, items will be shipped by USPS or UPS. All stock is at our USA warehouses. Most orders ship within 24 hours of processing your payment unless stated differently. Check our feedback to see how our customers love the FAST shipping we offer! Shipping is always free! 30 Days Return & Refund Policy We provide a 30 days return/exchange policy for our products. The buyer can choose between a refund or an exchange to his/her product. In case of defectives found, only factory defects are accepted as the reason of return. The package of the returned item(s) must be completely intact, and all accessory(s) inside the package must be original and in perfect condition. We do not cover the postage costs for returned defective items. Items returned must be received within 30 days from purchase. No refund or replacement is issued after this period of time. Please allow up to 7 working days for your return to be processed after it is received by us. We are extremely fair, and in the rare event of something out of the ordinary happening, we will gladly work with you to find a solution. Our Guarantee Your satisfaction is guaranteed! We offer a 100% Satisfaction Guarantee on all sales. If you are not happy with your purchase for any reason, please contact us within seven days of receipt of your item, or email us to share your concerns. As mentioned before we are extremely fair and will happily work with you to find a solution to any problem. As you can tell from our feedback, pretty much every single one of our customers is a happy one. So in the rare case something does go wrong, before leaving a negative feedback, contact us so we can help you and make things right! About Us We sell on eBay since 2006. We are based in the USA and ship from our own warehouses. Our products are a 100% authentic and all brand new. We work with the biggest suppliers in the US to bring you the best quality items you can get! We guarantee to provide the best service you have ever seen before Please see our other items Automotive Baby Camera & Photo Clothing Electronics Health & Personal Care Home & Kitchen Home Improvement Kitchen & Dining Office Products Shoes Sports & Outdoors Toys & Games Feedback Profile Other Auctions