Kimble is offering a FREE Improved Williamson Kit with purchase of 4 Improved Williamson Kits. For a limited time, when you order 4 Kimble Improved Williamson Kits for your lab you can get an extra kit valued at $300. Shop direct or contact your distributor - the choice is yours. View product details below. With proof of purchase use code 2017H1-WMKIT to Redeem Offer.