Qimius pH Meter Manual

June 03, 2017

Qimius pH Meter Manual

Warranty

Qimius pH tester is warranted from material and manufacturing defects for a period of one year from the date of purchase. The warranty does not cover any damages caused by user due to negligence or erroneous use of the tester. Please follow the instructions in this manual to operate and maintain your Qimius pH meter.

Qimius pH Digital Meter is designed to test the pH in all types of liquid. However, the thicker the liquid (e.g. lotion cream) the harder to get an accurate reading. Make sure the glass probe at the end of the meter has a fair share of the thick liquid for the best possible reading.

Specifications

 

  • Range: pH 0.00 - pH 14.0
  • Resolution: 0.01 pH
  • Accuracy: ± 0.05 pH
  • Battery 2 x 1.5v (500h) - Included
  • Calibration: Two points auto calibration
  • Operating Temperature: 0c - 50c
  • Dimensions: 155mm x 31mm x 18mm
  • Weight: 50g

 

 

Operation

  1. Remove the protective cap
  2. Rinse electrode with distilled water, and dry it gently with the drying pad
  3. Press ON/OFF button to turn on Qimius pH tester
  4. Immerse Qimius pH meter electrode in the liquid up to immersion level

Under no circumstances to immerse above the display level

  1. Stir gently for a few seconds then hold the meter still while immersed in the liquid
  2. Wait for the reading to stabilize
  3. After use, press ON/OFF button to turn off Qimius pH meter
  4. Rinse the Qimius pH meter with distilled water to clean the electrode
  5. Dry it gently with the drying pad and secure the protective cap back on the meter

 

Maintenance

  • Always keep the protective cap on while not used
  • Calibrate every once in a while, to maintain accurate reading
  • Do not leave the meter in relatively hot places for long times (e.g. in the direct sunlight)
  • Always keep calibration sachets away from children’s reach

Calibration

Prepare the pH Calibration Solution (applies to all pH levels)

  1. Add the content of the sachet into a container with 250ml (8.45oz) of distilled water at the temperature of 25 °C (77 °F).

If using the meter in a lab, humidity in the ambiance should be at normal living room rate (40-50%)

  1. Mark the container with the pH level powder used for future reference
  2. After use, make sure to clean the container well and wipe it dry with a filter paper

 

Calibrate Qimius pH meter for pH 7.00 and below:

A. Prepare pH 6.86 and pH 4.00 solutions, both needed for accurate calibration

B.  Calibrate at pH 6.86

  1. Immerse the electrode in pH 6.86 solution, stir the meter gently for a few seconds then hold still the meter
  2. While the meter is in the solution, press and hold "CAL" for 3 seconds and release.

Qimius pH Meter will display flashing 6.86, hold the meter still until it stops flashing

  1. Take the meter out of the solution and rinse the electrode with distilled water and dry meter with the drying pad

C.  Calibrate at pH 4.00

  1. Immerse the electrode in pH 4.00 solution, stir the meter gently for a few seconds then hold still the meter
  2. While the meter is in the solution, press and hold "CAL" on Qimius Tester for 3 seconds and release, and then immediately press and release only once.

Qimius pH Meter's displays flashing 4.00, hold the meter still until it stops flashing

  1. Take the meter out of the solution and rinse the electrode with distilled water and dry meter with the drying pad

D. Check calibration

To check if calibrated successfully, immerse the tester back in pH 4.00 solution to test it. Reading should be pH 4.00. If not, please repeat calibration at pH 4.00 again

 

Calibrate Qimius pH meter for pH 7.00 and above:

A. Prepare pH 6.86 and pH 9.18 solutions, both needed for accurate calibration

B.  Calibrate at pH 6.86

  1. Immerse the electrode in pH 6.86 solution, stir the meter gently for a few seconds then hold still the meter
  2. While the meter is in the solution, press and hold "CAL" for 3 seconds and release.

Qimius pH Meter will display flashing 6.86, hold the meter still until it stops flashing

  1. Take the meter out of the solution and rinse the electrode with distilled water and dry meter with the drying pad

C.  Calibrate at pH 9.18

  1. Immerse the electrode in pH 9.18 solution, stir the meter gently for a few seconds then hold still the meter
  2. While the meter is in the solution, press and hold "CAL" on Qimius Tester for 3 seconds and release, and then immediately press it again twice.

Qimius pH Meter's displays flashing 9.18, hold the meter still until it stops flashing

  1. Take the meter out of the solution and rinse the electrode with distilled water and dry meter with the drying pad

D. Check calibration

To check if calibrated successfully, immerse the tester back in pH 9.18 solution to test it. Reading should be pH 9.18. If not, please repeat calibration at pH 9.18 again

 

Calibration important notes

  • For accurate pH level solutions, please use the included sachets
  • Before you press the calibration button, make sure the electrode (glass probe) is immersed in a calibration solution up to the immersion level at maximum
  • The Qimius pH Digital Meter must be calibrated in case of:
  1. Long periods of inactivity or very frequent use
  2. The calibration but
  3. ton was pressed while the electrode has been exposed to air

 

Troubleshooting

If the Meter display keeps reading 7.00 or 0.00 all the time

  • Pull out the battery case, take the batteries out. This will reset the electronic chip to manufacturer setting.
  • Place back the batteries and calibrate the meter again

 

The electrode can dry out for two reasons:

  1. long period of inactivity
  2. Lon time exposed without protective cap on

In either case, immerse it into room temperature distilled water for 2 to 3 hours

 

Battery Installation

Qimius pH Meter comes packed with batteries.

If the meter display shows fade reading, it is time for new batteries. Pull out the battery case, take out the old batteries and place new ones. Please pay attention to the polarity of battery.

If you require support or have any questions or inquiries about Qimius products, please contact us on the below email. Visit our Facebook, Instagram and Twitter for latest news and products