Anhydrous Calcium Chloride, 500g, 4-20 Mesh - Laboratory-Grade - Calcium Chloride Powder - The Curated Chemical Collection by Innovating Science

got it undamaged

Exactly what it says it is, reagent grade anhydrous calcium chloride.Well packaged and identified, but should have included the MSDS sheet; I had to get that on-line.

The particles are of consistent size and it dissolves easily. I can't vouch for purity but it worked fine in my application. I used it to make sodium alginate gell.

I purchased this to use in middle school science investigations. It worked as expected. I was pleased with my purchase.

Worked great for my lab activity! Exactly what I needed.

Way too small for my 12 ft walk to mailbox

For classroom experiments this gives consistent results.

Superb Quality!Very Pure!