My consultant has asked me to re-commence testing one or twice per month, and I already have the SD Code Free meter but the strips I have left are out of date. The number on the tub is 01GS11C and I have found the website ordering system a bit confusing. Amazon have some in stock but they don't give a serial number, and I don't want to order the wrong ones. Does anyone know of a website where I can order the correct strips please. Thank you.