Gilson HPLC Chromatogram Simulator II GSIOC 8-00033-01 POWER CORD IS NOT INCLUDED. Used simulator, comes with a 30-day money back guarantee. Same day shipping when ordered before 1PM Central (M-F) If there is anything wrong with the item that you have purchased, please contact us directly and give us a chance to help. We respond quickly and will ensure you are satisfied with your purchase and experience! Please do not leave negative feedback or open any disputes with eBay or PayPal. Contact us directly and we will fix the problem quickly. We strive for 5/5 Star service!