This product has been discontinued by the manufacturer. Please contact us for the closest replacement - 1.DPH1+Meter (battery pre-installed)2.pH buffer solution: pH4.00/7.00/10.01, 30mL, one for each3.3mol KCl pH/ORP soaking solution, 10mL, 1 bottle4.Sample Vials: 3pcs5.Lanyard: 1pc6.Hard carrying case: 1pc