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pH Pen Instructions
Remove the black protective cap. Toggle the switch on the top to power on the pH pen. (If the pH bulb is dry , there will be a large error) Calibrate the pH pen in a standard buffer solution that is close to the pH of the test solution. ( as shown below )
Activation of the pH pen
Soak the pH pen in pH4.00 buffer solution or 3M KCL solution for 12 hours. Confirm that the pen tip is immersed in at least 1 inch, but must not exceed the warning line, that is, the immersion height.
Calibration of pH pens
Put the activated pH pen in the pH6.86 buffer solution, and turn the calibration potentiometer on the back of the pH pen to display the pH value of the buffer solution. Model 610 can only be calibrated at a single point. For accurate measurement, periodic review is recommended. (The rotation angle range of the correction potentiometer is 0~180 degrees. Do not rotate it hard to avoid damage.)
Preparation of pH 6.86 buffer solution
Remove buffer solution powder from package to container. Add 250ml distilled water. Stir until the solids are completely dissolved .
application
Swimming pools, factory wastewater, food processing, schools and laboratories, fish farming.
Other pen watch series
1. Model 650 ORP test meter.
2. Type 110, 111, 112, and 115 conductivity test pens, the range is 10~1990μS, 0.1~19.9mS, 1~199μS, 0.1~99.9μS; Type 113 is a TDS test pen with a range of 10~1990ppm.
3. Model 720C is a temperature test pen with a range of -160~850°C.
quality assurance
The warranty period of this machine is one year (according to the date of purchase, the test electrode part is not covered by the warranty). During the warranty period if there is a quality problem, the company will repair or replace parts for free; if it is caused by human factors, the failure or damage , the company wholeheartedly repairs it on its behalf, but it needs to charge the cost of materials. When returning the machine to our company, please wrap it properly with packing materials to avoid damage during transportation. In any case, please contact the company and get the approval of the company, and the machine can be returned.
