OK, I contacted Finnigan.  Avak says HOKO beads can be obtained from;

Prof. Fridrichsen
Boltzmann Strasse 18-20
14195 Berlin
tel: 30-8386557
fax: 30-8223700


>Dear Len,
>Apparently the Hoko beads are now a nuclear propietory 
>item in Japan and they will not let them out of the country
> Runor or truth? But thats the latest from Tyler as of IAEA meeting 
>in Vienna in March.
> However, AVAK at Finnigan-MAT thinks that a German group has 
>developed a similar bead. His address
>
>Hairigh Avak
>Training & applications,
>Finnigan-MAT
>Barkhausensrasse 2
>28197 Bremen, Germany
>FAX (04 21 ) 54 93 211
>
>Also re your earlier note the new windows software for the Delta 
>series is quite awsome and well worth the wait. I would have a very 
>careful look at the new Finnigan-MAT stuff. And this is from a dyed 
>in the wool VG lab.
>
>
>
>
>
>
>Date:          Thu, 04 May 1995 10:33:50 -0500
>Reply-to:      [log in to unmask]
>From:          [log in to unmask] (Len Wassenaar)
>To:            [log in to unmask]
>
>Does anyone know where I can purchase the so-called "Hoko beads" platinum
>catalyst for doing hydrogen-water equilibration? Is there a substitute
>available that works?  I faxed the company (Shoko Co.) listed by Coplen in
>the methods papers, but, was told the contact person was on holidays.
>Repeated further attempts to contact over the past 6 months gave no reply.
>
>Any help or suggestions would be appreciated.
>
>Len Wassenaar
>
>National Hydrology Research Institute
>Environment Canada
>11 Innovation Blvd.
>Saskatoon, Saskatchewan
>Canada  S7N 3H5
>
>tel: (306)  975-5747
>fax: (306) 975-5143
>URL:  http://gwrp.cciw.ca/nhri/nhrc.html
>
>
>
Len Wassenaar

National Hydrology Research Institute
Environment Canada
11 Innovation Blvd.
Saskatoon, Saskatchewan
Canada  S7N 3H5

tel: (306)  975-5747
fax: (306) 975-5143
URL:  http://gwrp.cciw.ca/nhri/nhrc.html