Recently we have installed Gamma spectrometry set up at our institution. It has NaI flat type detector of size 3"x3". To analyze soil, sand, rock, and other environmental samples we require suitable plastic beakers. Probably Marinelle beakers are the best ones for the purpose. Whom we can contact in India to purchase these beakers? Are there any other companies that provide containers of the same quality? If not Marinelle, which type of beakers are generally used? Please give me iinformation. Thanks in advance.