Offer valid through August 31, 2020. Offer applies to standard shipping only for orders shipping within the 48 contiguous United States and is not valid on previous orders. Offer based on merchandise total and cannot be combined with any other offers, discounts or incentives. Orders with the offer applied will be shipped via the carrier selected by Sigma Pharmaceuticals.
Free shipping discounts cannot be applied toward cold ship fees. However, if an order includes standard shipping charges in addition to cold ship fees and the order otherwise qualifies for the free shipping discount, the discount can be applied toward the standard shipping charges.