Pang W Nano and Micro-Scale Energetic Materialsю Propellants Explosives 2023

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• 【How to use calibration】- Press pH meter "CAL" for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4.00, and 9.18 to complete the calibration.
  
• 【Instructions for use of pH calibration powder】- pH standard solid substance. It can be used after adding water. Suitable for calibrating any type of ph meter. Each package needs to prepare 250ML of purified water.
  
• 【Note】- Note that the configured water must be purified water or distilled water. Tap water and mineral water cannot be used to configure the calibration solution. The water must be added in the required proportion, otherwise it will affect the accuracy of the calibration and increase the error. Pay attention to the calibration sequence (6.86-4.00-9.18)
  
• 【Shelf life】- The configured calibrators shall be sealed with clean bottles and stored in a cool place away from light. The shelf life of the calibration powder is 2 years, and the shelf life of the calibration solution after configuration is 6 months.
  
• 【Calibration】- pH meter has been calibrated before delivery, the buyer does not need to re-calibrate after receiving the goods, In the following cases, the pH meter must be re-calibrated: Has been used for a long time after calibration; Special electrode use Frequently; The measurement accuracy requirements are relatively high.
  
• 【What You Get】- 3 x pH 4.00@25℃/77℉ Buffer Calibration Powder, 3 x pH 6.86@25℃/77℉ Buffer Calibration Powder, 3 x pH 9.18@25℃/77℉ Buffer Calibration Powder.