Type: 701 composite sodium electrode (PNa composite electrode) Measuring range: (10-1-10-5) mol / L (0 ～ 6PNa Temperature of tested solution: (20 ～ 40) ℃ Zero potential (Pna value): 0 ± 1 Sample PH value: greater than or equal to 10PH Plug model: BNC (Q9 type) Dimensions (mm): φ12 × 120 Interfering ions: H +, K + Ionic strength regulator: 0.2mol / L diisopropylamine Activation solution 10-3mol / L sodium chloride, soak for more than two hours Filling liquid: 1.0mol / L ammonium chloride Supporting instruments: sodium ion meter Electrode storage: 1. After using the electrode, rinse and dry it 2. The electrode should be stored in a dry and ventilated normal pressure room (5-45 degrees) with a relative humidity of not more than 85%, and the air should not contain corrosive gases. Precautions: 1. When it is used for the first time or not used for a long time, if the internal electrode is not in contact with the internal solution, it should be shaken down to return the internal solution to the head of the electrode, and then soak the electrode activation solution for more than 2 hours, use. 2. If abnormal data is found during use, use a sharp knife to gently scrape the surface of the ceramic sand core at the measuring end, and then soak in absolute ethanol for several hours. 3. The sensitive bulbs of the measuring electrode should be fully immersed in the measured solution. 4. The electrode lead and insulation should be kept clean and dry. Jewelry Packaging,Jewelry Gift Boxes,Paper Jewellery Box,Jewelry Box Apache Industry Ltd. , http://www.apachedisplay.com