- Today, I'd like to show you how to use Go Wireless pH to
measure the pH of household acids and bases. This experiment is available as a
free download from our website. You may be familiar with the method for measuring pH
involving litmus paper. Well, there are several advantages to using a digital
sensor to measure pH. Our pH sensors measure pH nearly instantly. They allow
you to record your data and they provide precise measurements for the pH.
Go Wireless pH communicates with data collection software via Bluetooth Smart.
This low energy technology is easy to use and it yields great battery life. You can
use Go Wireless pH with LabQuest 2 or with a device running graphical analysis.
Begin by turning on your Go Wireless pH. The LED blinks red. Launch graphical
analysis and tap to create a new experiment. Choose Wireless Sensors and
find your Go Wireless pH in the list. Tap to connect to the sensor. You'll see that
the LED now blinks green. Now, let's measure the pH of one of our household
solutions. Remove the lid of the storage bottle. Then rinse the tip of the
electrode with distilled water. Immerse the end of the sensor in this solution and
you'll see that instantly, a live readout is presented with the pH of the solution.
Wait for that value to stabilize and then you can record it.
I'm going to make a note next to my value so I remember what I was measuring.
This is baking soda and then I tap "Done", and you can see the recording and the note
in the table. Next, let's do another solution. I'm going to rinse the tip of
the electrode again and now let's test ammonia.
Once again, put the electrode in the solution and
you can see the reading changes quickly. I'm going to wait for it
to stabilize and when it does, I'm going to tap "Keep" into the data in the table.
Type in the value or the values captured, I'm going to type in the name "Ammonia".
Now you can see that the graphical analysis automatically saves all my
recordings in the table. It saves the entire experiment so that I can go back
to it at anytime. That's how easy it is to measure pH with Go Wireless pH and now I
can finish my experiment. Check out our website for detailed instructions on
this and other experiments.