Any suggestions on storing pollen?

Fri, 13 May 2016 10:19:00 PDT
Hi James,

thank you for this page of valuable information. One little comment: You 
recommend blue silica gel to dry pollen. this uses Cobalt(II) chloride 
as humidity indicator, which was identified as highly carcinogenic in 
recent years. It (hopefully) should be difficult to obtain now and I 
strongly recommend anyone to give any remaining leftovers of blue silica 
gel to a professional disposal service, as there are several non-toxic 

Southern Germany
Likely zone 7a

Am 13.05.2016 um 18:44 schrieb James SHIELDS:
> I put this page together years back on storing pollen:
> --  Jim
> On Fri, May 13, 2016 at 12:33 PM, Michael Mace <>
> wrote:

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