You can buy calcium phosphate from various sources depending on whether you need a small amount for a hobby project or high-purity lab grades for scientific "inorganic paper" research. 🛒 Where to Buy
Recommended for bulk lab purchases (1 kg+). Industrial/Bulk: where to buy calcium phosphate
with an acid (like vinegar) to create a calcium solution, or react with phosphoric acid to specifically yield calcium phosphate. You can buy calcium phosphate from various sources