Features: Ensure the purity of your samples with our organic filters, designed for high efficiency filtration and precisions analysis. Make from quality organic materials, these filters feature a 13mm/25mm diameter and 0.22um/0.45um pore size, providing fast and stable filtration result. /Enhances your laboratory efficiency and accuracy with these disposable microporous membrane filters, essential for any advanced scientific setting. Perfect for sample preparation in HPLC, and other analytical instruments, as well as microporous solution filtration. Ideal for researcher, laboratory technicians, chemicals analysts, and biological research professionals. Specifications: Materials: Plastic Color: As The Picture Shows Styles Optional: 8 Styles are Available as Shown in the Picture. Size: As The Picture Shows Package Includes: 100Pcs Membrane Filters note: Please allow 1-2cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!