Measuring pH, temperature
and conductivity in water
samples from Laguna del
Sauce, the sea, and tap water.
Barrios, Henderson, Meller and Pomsztein
08/10/2020
S5 IBDP ESS
, AIM
The purpose of this experiment was to measure abiotic factors such as temperature, pH
and conductivity in water samples taken from Laguna del Sauce, the “Mansa” beach, the
“Brava” beach and tap water.
MATERIALS
1. 100ml beaker (3)
2. 50ml beaker (1)
3. The 4 water samples
4. temperature sensor vernier
5. pH sensor vernier
6. conductivity sensor vernier
7. lab quest data logger
8. buffer solutions (pH4 and pH9)
9. Deionized water in a bottle
10. paper
PROCEDURE FOR TEMPERATURE
1. Open data logger and Connect GoPro Sensor using a USB cable.
2. Fill the four beakers with the water samples.
3. Place the probe in one of the beakers.
4. Wait until the value stabilizes
5. repeat step 3 and 4 with the 3 other samples.
PROCEDURE FOR pH
1. Remove the storage bottle from the electrode by first unscrewing the lid, then
removing the bottle and lid.
2. Thoroughly rinse the lower section of the probe using distilled water and dry it
with a piece of paper.
3. Connect the pH sensor to the lab quest data logger
4. Check if the pH sensor is calibrated by placing it into the pH 4 buffer solution and
making sure it gives that value.
1
and conductivity in water
samples from Laguna del
Sauce, the sea, and tap water.
Barrios, Henderson, Meller and Pomsztein
08/10/2020
S5 IBDP ESS
, AIM
The purpose of this experiment was to measure abiotic factors such as temperature, pH
and conductivity in water samples taken from Laguna del Sauce, the “Mansa” beach, the
“Brava” beach and tap water.
MATERIALS
1. 100ml beaker (3)
2. 50ml beaker (1)
3. The 4 water samples
4. temperature sensor vernier
5. pH sensor vernier
6. conductivity sensor vernier
7. lab quest data logger
8. buffer solutions (pH4 and pH9)
9. Deionized water in a bottle
10. paper
PROCEDURE FOR TEMPERATURE
1. Open data logger and Connect GoPro Sensor using a USB cable.
2. Fill the four beakers with the water samples.
3. Place the probe in one of the beakers.
4. Wait until the value stabilizes
5. repeat step 3 and 4 with the 3 other samples.
PROCEDURE FOR pH
1. Remove the storage bottle from the electrode by first unscrewing the lid, then
removing the bottle and lid.
2. Thoroughly rinse the lower section of the probe using distilled water and dry it
with a piece of paper.
3. Connect the pH sensor to the lab quest data logger
4. Check if the pH sensor is calibrated by placing it into the pH 4 buffer solution and
making sure it gives that value.
1
