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frank m cereghino Jr
2025-08-12 20:58:33
Worked great for a middle school mass lab. Easy for the teacher to tell which is which, but I can see students not being able to tell the difference. Labeled atomic symbol with a sharpie on them. Great items. Perfect for our 2 part Mass lab. Thanks!
Book Gnome
2025-06-23 13:49:15
Tip: Use jewelry polish or fine 600 grit sandpaper to remove oxidation and restore a shiny patina.This set visually demonstrates the different densities of various common metals and will work great for my university science lectures. The metal rods are acceptably machined, though several of the pieces could have been much more nicely polished and finished. One piece had a blemished surface, and the lead piece had small dings in it — possibly a result of these pieces all being packaged loose in the same bag rather than packed in foam or similarly protected. They’re acceptable at this price point but not great. Also, an informational sheet was supposed to be included with this set but was not.
MonaBond
2025-05-20 18:38:43
Each cylinder weighs 1 ounce, they’re a neat little trinket to have on your desk.
Customer
2025-04-29 18:47:11
The cylinders were not exactly equal in mass, but were close enough. They were in just a small ziplock bag, without any identification, but you can figure out which is which easy enough if you know the densities. Not especially impressive, but good enough to do the job.
Bob
2025-02-09 14:58:50
This is a nice set of metal density examples. Each sample weights exactly 30 grams. They are each cut nicely and shaped with clean edges and perfectly round. This is a perfect set to demonstrate the difference in metal densities.
irishfan
2025-02-01 11:25:30
Cannot tell zinc and tin apart as they arrived not labeled! Both have similar properties and coloring, and nearly impossible to tell apart! No help - disappointed by this manufacturing oversight.
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