Brownlee Water Electrolysis Apparatus

Product Code : SCL-CLE-12743

Quick Answer: The Brownlee Water Electrolysis Apparatus is a simple electrolysis apparatus with platinum electrodes on insulated rods, mounted on a non-conducting support that rests across a battery jar or 1 L beaker.

Last updated: October 2026

Key Features

• Platinum electrodes on insulated connecting rods
• Binding posts mounted on a non-conducting support
• Two clips, each holding an inverted test tube to trap gas
• Support rests across the top of a battery jar or 1 L beaker (not included)
• Designed for water, and usable with many other aqueous solutions

About This Product

This electrolysis apparatus demonstrates that electrically conductive liquids can be decomposed into their constituent elements by a unidirectional electric current. The gases formed collect in the two inverted test tubes, so their relative volumes can be estimated. It is designed mainly for electrolysing water but can be used with many other aqueous solutions, including solutions for demonstrating electroplating.

Frequently Asked Questions

Is a beaker included?

No. The support rests across the top of a battery jar or 1 L beaker, which is not included.

What can the apparatus demonstrate?

It shows that conductive liquids can be decomposed into their elements by a unidirectional current, lets the gases be trapped and their relative volumes estimated, and can demonstrate electroplating.

Related: Chemistry Lab Equipment, Hoffmann's Voltameter, Mounted Platinum Electrodes.

For a quotation on the Brownlee Water Electrolysis Apparatus, contact School Lab China.