15x Standardized Extract is our highest quality, and best selling Bali Kratom offering to date. It is the only grade on the market today that is strong enough to be active at approxamatly 1 gram. In addition to being the strongest grade available, 15x Standardized Extract is exactly that, Standardized, meaning no more guess work, no more weak batches no more wondering. This new offering will be consistent from batch to batch, ensuring an even active alkaloid content every time you order.