Take advantage of this offer today by completing the form below or by contacting your sales representative directly. Mention promo code: WINTERWFI. Offer is good for 30% off of the list price of ready packaged WFI products (1L bottles, and 20L and 200L flexible packaging). Customized packaging is available upon request but excluded from the offer. Offer expires March 30, 2018 and applies to new customer orders and to new product orders for current customers.