Featured in PASCO’s Biology through Inquiry Teacher Guide

Biology through Inquiry Teacher Guide

(PS-2870C)

Features 25 inquiry based labs covering the fundamental concepts of cell biology, ecology and physiology.

Water Purification

Lab Summary

Use a pH sensor to understand the effectiveness of various treatments for improving the quality of water.

Theory

Guide students to understand the effectiveness of various treatments for improving the quality of water.

Method

Using a pH sensor and a conductivity sensor, students gain experience conducting and comparing the following procedures:

  • Measure a sample of polluted water to establish a controlled reference.
  • Measure the water sample after applying sedimentation only.
  • Measure the water sample after applying sedimentation and filtration
  • Measure the water sample after applying coagulation, sedimentation, and filtration.

Sensors / Equipment Used:

PASPORT Water Quality Sensor

(PS-2169)

Measures temperature, conductivity, pH/ISE/ORP and dissolved oxygen. It is specifically designed for convenience in conducting water quality lab experiments. For use with PASPORT Interfaces.

Materials Used:

Beaker, 250-mL (2)
Coffee filter (2)
Distilled water, 500 mL
Egg whites,  5 mL
Erlenmeyer flask, 250-mL 
Funnel 
Polluted water,  1 L
Stirring rod 

The Associated Bundle:

Biology Standard Sensor Bundle

(PS-2925A)

The Biology Standard Sensor Bundle includes a photosynthesis tank and the sensors required to perform 19 of the 24 Lab Activities in the Biology through Inquiry manual.

Interface Required

This experiment may require software and an interface for data collection.