High School / ChemistryEarth ScienceEngineeringEnvironmental ScienceSTEM

Project: Design a Purification Process

Students must engineer a system to purify water that contains macroscopic and microscopic contaminants and evaluate the effectiveness of their design using a condenser, turbidity sensor, conductivity sensor, and qualitative observations.

Supports NGSS Performance Expectations HS-PS3-3: Design, build, and refine a device that works within given constraints to convert one form of energy into another form of energy -and- HS-ETS1-3: Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics, as well as possible social, cultural, and environmental impacts.


Student Files

13D_Project_Design_Purification.docx 292.28 KB
13D_answer_sheet.docx 111.53 KB
13D_Project_Design_Purification.pdf 425.49 KB
13D_answer_sheet.pdf 755.50 KB
13D_Project_Design_Water_Purification_Google_Slide.pdf 32.05 KB

Teacher Files

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Featured Equipment

Cuvettes and Caps

Replacement Cuvettes and Caps for the PASCO Wireless Spectrometer.


Designed to cool the vapors from a liquid sample that is being heated (distilled), and capture the condensation.

Colorimeter and Turbidity

Wireless Colorimeter & Turbidity Sensor

This sensor can function as a turbidimeter or colorimeter and is capable of measuring absorbance and transmittance at six different wavelengths.

Wireless Conductivity Sensor

Wireless Conductivity Sensor

This waterproof sensor connects via Bluetooth® to measure both conductivity (ionic content in solution) and total dissolved solids.

100 NTU Calibration Standard

Replacement calibration standard for PASPORT Turbidity Sensor (PS-2122).

Many lab activities can be conducted with our Wireless, PASPORT, or even ScienceWorkshop sensors and equipment. For assistance with substituting compatible instruments, contact PASCO Technical Support. We're here to help.

Copyright Disclaimer: Section 107 of the Copyright Act of 1976 makes allowance for “fair use” for purposes of teaching, scholarship, education and research. Reproduction under any other circumstances, without the written consent of PASCO, is prohibited.
Source: Lab #13D

Essential Chemistry Teacher Lab Manual

Project: Design a Purification Process