| Experimental Reagents | ||
| Reagent | Grade | Manufacturers |
| Potassium Hydroxide | Analytical Pure | Tianjin Comio Chemical Reagents Co., Ltd |
| Hydroic Acid | Analytical Pure | Tianjin Yongda Chemical Reagents Co., Ltd |
| Diodium Hydrogen Phosphate | Analytical Pure | Tianjin Comio Chemical Reagents Co., Ltd |
| Potassium Dihydrogen Phosphate | Analytical Pure | Tianjin Base Chemical Reagents Co., Ltd |
| Copper Sulfate | Analytical Pure | Tianjin Guangfu Fine Chemical Industry Research Institute |
| Iodine | Analytical Pure | Tianjin Base Chemical Reagents Co., Ltd |
| Potassium Iodide | Analytical Pure | Tianjin Comio Chemical Reagents Co., Ltd |
| Sodium Thiosulfate | Analytical Pure | Tianjin Hengxing Chemical Manufacturing Co., Ltd |
| Soluble Starch | Analytical Pure | Tianjin Yongda Chemical Reagents Co., Ltd |
| Methyl Blue | Analytical Pure | Tianjin Guangfu Fine Chemical Industry Research Institute |
| Sodium Carbonate | Analytical Pure | Tianjin Beichen Founder Reagent Factory |
| Acetonge | Analytical Pure | Tianjin Bohua Chemical Reagents Co., Ltd |
| Ethanol | Analytical Pure | Tianjin Hengxing Chemical Manufacturing Co., Ltd |
| Acetylene Black | Analytical Pure | Fujian Temigao Co., Ltd |
| Adhesive PVC (PTFE) | Analytical Pure | Shanghai Maclin Biochemical Technology Co., Ltd |