What is Pure Whey Isolate™ 90? Pure Whey Isolate™ 90 is the best value whey protein isolate in Europe – you won't find a WPI of comparable quality anywhere else at this low price. Essentially, Pure Whey Isolate™ 90 is an extremely high quality whey protein isolate powder, providing a huge 27g of high quality whey protein per 30g serving (based on unflavoured). In addition, Pure Whey Isolate™ 90 is derived from grass fed cow's milk, has been instantised for ease of