try Eckert & Ziegler ,

http://www.ezag.com/home/products/isotope-products/isotopes-cnl-scientific-resources/products.html

Giancarlo

Try the Atomic Energy of Canada. they are located at this address:

AECL – Chalk River Laboratories (Head Office)

Chalk River, Ontario

Canada K0J 1J0

Phone: (613) 584-3311

The Chalk River Laboratories (also known as CRL, Chalk River Labs and formerly the Chalk River Nuclear Laboratories, CRNL) is a Canadian nuclear research facility located near Chalk River, about 180 km (110 mi) north-west of Ottawa in the province of Ontario.

CRL is a site of major research and development to support and advance nuclear technology and has expertise in physics, metallurgy, chemistry, biology, and engineering and unique research facilities.. CRL produces about one-third of the world's supply of medical radioisotopes.[1] It is owned and operated by Atomic Energy of Canada Limited. Two of their staff have been Nobel Laureates so far.

There are different suppliers of radioisotopes, isotope-enriched materials and pure materials worldwide for your purposes:

1. TRACE, Canada

2. ISOFLEX (Russia, but there is also a market dealer in US)

3 CORTECNET (France)

4. CHEMOTRADE (Germany)

5. NIDC, Oak Ridge (USA)

6. NIST (USA)

7. ISOTRACK-HTS (UK)

8. CERCA-LEA (France)

9. Eckert&Zigler (Germany)

Any of enlisted suppliers is on the web, where you can get all info you need about what your are looking for.

Juan

Try AECL [Atomic Energy of Canada Ltd] at Chalk River, Canada

else

Chongqing Rong＆Quan Pharmaceutical Technology Co. , Ltd

Tel：+86-28-88536826 in China (Mainland) begin_of_the_skype_highlighting +86-28-88536826 FREE end_of_the_skype_highlightingweb：http://www.cdbsx.com.cn

https://www.mpbio.com/

do some but not Na