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Obsidian Specimen Pack Size:Single 5-inch inner-diameter end tubes

Obsidian Specimen Pack Size:Single 5-inch inner-diameter end tubesNon crystalline volcanic glass with conchoidal fracture formed from rapid cooling of silica rich lava, historically prized for sharp edged tool making.

SKU: 84326334130 · From astonvaughan.co.uk

4.4
USD10.49 USD57.49

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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

Description

5-inch inner-diameter end tubes

Borosilicate glass U-tube apparatus enables visual observation of capillary action

Heavy-duty metal inspection quadrat divided into 25 equal squares

and chemical analysis investigations

Obsidian Specimen Pack Size:Single 5-inch inner-diameter end tubesNon crystalline volcanic glass with conchoidal fracture formed from rapid cooling of silica rich lava, historically prized for sharp edged tool making.

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