"99% pure nicotine" refers to nicotine that is highly concentrated and has undergone purification processes to remove impurities, resulting in a product that is 99% pure nicotine. This high level of purity is often used in various industries, including pharmaceuticals, vaping, and agriculture. In the vaping industry, 99% pure nicotine is commonly used to create e-liquids with precise nicotine concentrations, allowing users to customize their vaping experience. However, it's important to handle 99% pure nicotine with extreme caution, as it is a highly toxic substance. Proper safety precautions should be followed, and it should be stored securely away from children and pets. Additionally, accurate measurement and dilution are crucial when using 99% pure nicotine to ensure safety and consistency in the final product.