Dr. Maria Kubik sent us the image above with the note:
I had a chance to put the warp and weft fibres of WAC 031 under the microscope today; we had suspected a blend because it was quite an unusual fabric and colour, but it turns out to be both cotton. No idea what it is coated with. I’ve attached a nice photo of it, the unusual colouration and twist is characteristic for cotton under polarised filters.
Alas, one of these pieces of equipment out here in our rooms is a few years off yet.
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