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Without a blacklight the ferrofluid is black and the clear liquid has a slightly greenish tint
and Major (including BA
but kids absolutely LOVE it
"A good marriage is forged and strengthened over time like iron
Add on an ultra bright LED and extra handheld magnet to the SPIKE for even more fun
Ferrofluid Mini Display RED accessory Without a blacklight the ferrofluidThe Ferrofluid Mini Display is our most affordable display and contains 2ml of the highest quality ferrofluid available. Permanently sealed in a borosilicate glass container and constructed from the same high quality materials as our other displays, the mini display makes for a beautiful addition to your desk or the ultimate gift for a science lover. Contains 2ml of the highest quality RED ferrofluid available 30ml total volume, tube size 1. 25" x 3.