To purchase pure nicotine liquid, consider reputable suppliers such as Nicotine India, Supernic, and Inovogen Life Sciences. These companies offer high-quality pure nicotine liquid products suitable for various applications. Before making a purchase, verify the credentials and reputation of the supplier to ensure reliability and product quality. Additionally, adhere to all safety guidelines for handling and using pure nicotine liquid, as it is a potent substance. Additionally, because pure nicotine liquid is a strong drug, follow all safety instructions when handling and using it.