Absolutely fantastic - products are always A+++ purity is high. Quantities are sold conveniently, prices are good too - probably actually the best considering the reliable purity of their products. With pharmaceutical grade nutritional products - in their raw state, its often difficult to know who to trust - who is telling the truth, who isn't. Well, Blackburn distributions are totally transparent - not all products are 99.99% some are 97%, 98% etc and the certificates of purity are provided. Unreservedly I always use BD because they are that reliable trustworth, and reasonably priced - their product range is always being updated and expanded and is second to none. So make them your no1 choice!