Potassium metal element 19 sample Purity > 99,8% Quantity: > 1 gram Placed inside a labeled glass vial, each vial is labeled with the chemical symbol, atomic number and all the most important info for each element, the color is also referred to the chemical group of each element. This is not a toy, it is perfect for collection and laboratories purposes.
D**S
Great demo for a chemistry classroom
I am a chemistry teacher and this was a great demo on the alkali metals and their increasing reactivity!
M**.
Good price for this product
K is an interesting element especially is water. Product arrived in good condition
R**O
Really fun elements.
Bought one to keep and one to play with.
M**B
The picture is misleading
The reason I gave only 3 star because the picture is misleading. What you get is only one container not two.
B**E
Perfect for home chemistry
This was perfect for an entry to endothermic vs exothermic reactions for my kids, as well as the differences in properties of different metals.
L**T
Appears to be just as advertised
It took 30 days to arrive via international mail (Italy), but it arrived and appears to be what was advertised. I was wondering about the package because the label appears oil soaked in the pictures, but it turns out that the label is just a matte, frosted finish. The packaging is perfectly fine and well wrapped. I may update when I have an opportunity to test the potassium in the vial.
L**R
High quality product.
It is exactly what the picture shows.Well taken care of obviously.
R**L
Tiny amount
This is my second year buying this. I 4x as much last year. Not enough to teach six class periods with. I had to adjust my lesson plans when it FINALLY arrived (late).
Trustpilot
2 weeks ago
1 month ago
