Obsidian: Rocks we know we knowDec 21, 2017
$33.00 inc GST
Small blocks of limestone for use in chemistry or to demonstrate determination of specimen as limestone with the use of vinegar.
Blocks are cut to approximately 1 x 1 x 2cm so they fit in your test tube and have well defined faces to observe bubbles. Each 1kg bag contains approximately 60 pieces
1 in stock