Box of 8x CAMP Chalk Bock
2 ounce blocks of super-pure, bone-dry chalk
Many climbers prefer breaking and powdering blocks of chalk
Weight of 1 block : 56g, 2oz
CAMP chalk (a form of magnesium carbonate (4MgCO3-Mg(OH)2-4H2O) is tested by an independent laboratory to verify its purity.
The measured content of silicon is just 0.021% (equivalent to 0.043% crystalline silica), far less than the dangerous threshold and far ahead of the industry standard.