[Nhcoll-l] Translucent residue

[Mandy Reid]

Apologies that this is off the current topic, but does anyone know what the shiny, flaky and slightly mirror-like reside is that forms on the sides of glassware that has previously contained 5-10% seawater/formalin that has been buffered using sodium bicarbonate? It is very difficult to wash of glassware as a rule but it sometimes flakes off in small particles.

I am wondering whether it is a harmful if inadvertently inhaled.

Any ideas?

Thanks
Mandy

Dr Mandy Reid
Collection Manager, Malacology, Australian Museum Research Institute
Australian Museum 6 College Street Sydney NSW 2010 Australia
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