Hello Everyone,

I have two batches of Hokko Beads.  The old ones, that have been
sitting around in a drawer for 4 years,  are white in colour.  The
new ones, that were shipped with our Aquaprep, are metallic and
silver coloured.  The white ones did not work well the first time,
but results appear to be improving with each use.  Results are fine
when I use the silver ones.  I assume that some sort of oxide coating
has formed on the old beads.  Has anyone seen this and can you
suggest how I might fix the problem?

Yours truly,

Jennifer Mckay
Agente de Recherche / Research Associate
GEOTOP - Universite du Quebec a Montreal
C.P. 8888, succursale Centre-Ville
Montreal, Quebec, Canada
H3C 3P8

Telephone bureau/office: 514-987-3000 (poste/ext 2413)
Telephone lab: 514-987-3000 (poste/ext 7028)
Telephone GEOTOP: 514-987-4080
Telecopieur/Fax: 514-987-3635
E-mail: [log in to unmask] or if that fails try [log in to unmask]