Mite eggs is a possibility.
The zoological option is seeming more likely.

> On 23 Mar 2017, at 10:50, Helmut Kroll <[log in to unmask]> wrote:
>
> We have a water purifier ion the lab, with such little ion exchangers.
>
> Mite eggs?
>
>
> Am 23.03.2017 um 11:33 schrieb Charles Simpson:
>> Hi Helmut.
>> I would have thought highly unlikley to be artificial as found in a locked context at the botom of a romano british ditch.
>> But happy to discuss further if you think possible ???
>> Chas
>
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> Dr. Helmut Kroll
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> 24106 Kiel
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