Nuclepore polycarbonate filters contain uniform, cylindrical pores, preferentially etched into the membrane, allowing for an even distribution of a collected sample in one plane across the entire exposed membrane surface. Contaminant-free, these microporous screens are biologically inert, and offer excellent chemical resistance and thermal stability.
Parafilm® M is a unique self-sealing, moldable and flexible film for numerous uses in the typical laboratory including the electron microscope laboratory. Parafilm® M has unique permeability properties, impressive water vapor transport properties, and is resistant to many common reagents. Parafilm products includes laboratory sealing film, stem wrap, grafting ( budding) tape and Flora Tape stem wrap.
Welcome to the Internet's largest offering of high quality tweezers. Most of the tweezers sold by SPI are made in Switzerland, and are the very highest quality tweezers anywhere in the world. At this point in time all gold plating and PTFE® coating of tweezers are also done in Switzerland, and for the same reason - we just have not found anywhere in the world that can match the high Swiss quality. Locate tweezer by Style #