【Instant purchase OK! ❣️】 Shipping included ☺︎ ✨ Last one ✨ Please understand that this item is stored at home and will be sent in simple packaging before purchasing ♡ Please check the actual photos for the condition of the product ⭐️ ※ In order to ship at a slightly lower price, we may remove the item from its box due to shipping costs. Thank you for your understanding! 【Chemical Compatibility】Compatible with pH 1-14, with strong chemical compatibility. 【Features】 Can filter corrosive chemicals such as strong acids and strong alkalis. 【PTFE Membrane】 Naturally hydrophobic. 【Application】 Suitable for aerosol sampling, air and gas filtration, HPLC and organic solvent filtration. Membrane filter PTFE hydrophobic diameter 47mm pore size 0.22µm 100 sheets 20-33✩⃛