PH-80: pH HydroTester Series
The PH-80 has proven to be the MOST reliable pH meter in its price range. It has become a favorite in such applications as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more.
Measures pH and Temperature
One-touch automatic digital calibration
Simultaneous temperature display
Large LCD display
Automatic Temperature Compensation (ATC)
Auto-off function, data-hold function and low-battery indicator
Factory Calibrated: The PH-80 meter is factory calibration to pH 7.0.
Includes a translucent cap.
pH Range: 0 – 14
Temperature Range: 1-55 °C; 32-130 °F
Resolution: 0.1 pH; Temperature resolution is 0.1 °C/F
Accuracy: +/- 0.2 pH; Temperature accuracy is +/-2%
Calibration: Digital automatic calibration (one point)
Minimum EC/TDS: 10 µS/5 ppm
Electrode: Glass sensor and reference tube electrodes
Power source: 3 x 1.5V button cell batteries (model LR44 or equivalent)
Dimensions: 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches)
Weight: 53.9 g (1.9 oz)
Before Starting the Hydro Tester
Here are the steps to follow before using the hydro tester:
Wet the PH-80 sensor in the electrode storage solution for some time before using it. The recommended wetting time is 15- 30 minutes before using. The solution is included with the device, in the Mylar packet (large).
Pour the solution in the cap such that it moistens the sponge. Any excess solution can be discarded.
Allow the meter to stand upright for the desired time in the solution.
Mix the content of the smaller Mylar packet with 100 ml of distilled water to produce a solution to be used during the calibration. This packet contains 7.0 PH buffer powder. This solution can be used for 3-4 weeks if stored in a sealed container.
Tips for Taking Accurate pH Measurements
The following tips will help you take accurate pH measurements:
Pull out the cap before testing. Avoid testing using the cap.
Put on the POWER button. You will see a display “PH”. This will appear for a moment or two, and will change to the number. This indicates that your meter is all set to take pH measurements.
Start taking the measurement by dipping the sensor of the meter into the solution, water, or liquid to be tested.
Remove the electric charges or air bubbles by swirling the meter. The swirling should be done lightly.
You will see the reading immediately. The water should be kept in the water until there is a stabilization. It may take up to 30 seconds to achieve this stabilization.
Click on the HOLD button to see the reading out of the liquid. This will help to retain the reading for some time. Once you see the reading, release the button.
Turn off the meter by clicking the POWER button.
Rinse the meter with TDS water after shaking off any excess water on it. Else, you can use the compressed air to clean the meter. Take care to use the water which has low TDS value. Put on the cap again before you use it for the next time.
NOTE: The PH-80 shows extreme sensitiveness in the water below 10 µS. If used in this type of solution, it is always ideal to swirl this meter throughout the reading or measure in the flowing water. This will help freeze the reading for 10-15 seconds, which enables you to have a good look at it.
Temperature and Switching Temperature Modes
Understanding the temperature and switching temperature modes will help you immensely.
The temperature reading and the pH readings appear simultaneously. The temperature reading can be seen on the LCD panel, except during the calibration mode.
By default, the temperature mode is set in the Celsius. You can change this to the Fahrenheit mode by clicking on the TEMP/CAL button or vice versa.
Steps for pH Calibration
The performance of PH-80 depends on the calibration of the device. The meter provided to you is calibrated to pH 7.0 and remains in the same position during first few uses. However, you can easily calibrate the meter to the level closer to the desired value or the range closer to your testing, or in values in-bet