Commercial Teflon tape is stretched over an appropriate holder made of metal, plastic, or cardboard with a hole cut in the center. The effects of stretching and sample application on the quality of the IR spectrum are discussed. IR spectra of some typical organic compounds obtained with these ...
After confirm order and timeline, DEF'll start production procedure once receive payment. If require sample, please inform DEF in advance. 5~10 working days for making seals. Quality Checking, DEF can send bulk order photo for approval before packing, if you need. Packing Order release...