Features 1?Color LCD touch screen ,easy to operate. 2?Adopt advanced solid ion-selective electrode technology. 3?Electrode life time is 24-36 months. 4?Each measurement channel can be closed separately emergency detection is available . 5?Detect parameters ,include pH,PCO2,PO2,NA+,K+,CL-,CA2+. 6?Requires minimal maintenance ---no fluids.