STERILE 33mm ABLUO (TM) ultrasonic welded Syringe filters; Adaptor: FLL/MLL end fitting. STERILE. Housing: Acrylic. Membrane: CA. Pore Size: 0.22µm. Options may include alternate end fitting, housing material, membrane material, pore sizes and sterile or non-sterile. Features and Benefits. Increased throughput and speed of sample preparation.