In traditional DIY papermaking, people almost always use (limestone) to: Buffer the paper (make it acid-free/archival). Whiten the sheet and increase opacity. Retard shrinkage in paper castings.
Good for finding ACS (high purity) grade powder in small quantities from chemical resellers. Scientific & Research Grade: where to buy calcium phosphate
Recommended for bulk lab purchases (1 kg+). Industrial/Bulk: In traditional DIY papermaking, people almost always use
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 Good for finding ACS (high purity) grade powder
Offers various forms like monobasic and tricalcium phosphate for precise experiments.
Often combined with other treatments to make paper that resists both heat and liquid. 🥚 DIY Alternative (Make Your Own) If you can't buy it, you can extract it from eggshells : Roast washed eggshells in a pan until slightly browned. Grind them into a fine powder.