Custom processing No Brand Pormake Model PHS-3C type PH meter laboratory the LCD display measuring range 0.00-14.00 precision temperature compensation range 0.01 14 (℃) Power supply voltage 220 (V) Operating temperature 45 (℃) Smart Power Adapter 9V circuit PH value of the test equipment development lab on a chip count acidity b2b e-commerce website http://www.hdblfz.com/blgy/ pH meter has been four generations of products, namely: the first generation of a transistor circuit, the second generation of IC, Merchant's House http://www.hdblfz.com/blxwen/ third generation smart chip circuit, the fourth generation of multi-parameter instrument series. Product Specifications: This product is the third smart chip circuitry, standard: 9V power adapter, Molded E-201-C composite electrode and standard buffer. Circuit smart chip LED backlit display, LCD liquid crystal display measurement accuracy range 0.00-14.00PH 0.01PH 9V power adapter