It is important to order the chuck that seems best for your type of work. We generally recommend the next smaller size chuck that is just smaller in size than your largest substrate. It is imperative that there be no exposed chuck surface, otherwise, the coating liquid will be sucked away into the vacuum system, which of course is quite undesirable. If you are working with samples of various sizes, it might be beneficial to have more than one size chuck. Vacuum chucks are available in aluminum or PTFE
See vacuum seclection guide : Download |