Re: qz plate

[Rory M Wilson (CDH) 3089]

   
      I believe that 
            Bede Scientific,
            Bowburn South Industrial Estate,
            Bowham,
            Durham,
            DH6 5AD,
            UK.
   tel    +44 (0)191 377 2476
   fax                             9952

           make quartz and silicon 'zero' background sample holders.
(At least they did the last time I enquired.)
If you really want a minimum background then silicon is better than 
quartz.
             yours
                      Rory.