Trade secrets... Bio or non-bio washing powder?

By Jonathan Hare2013-05-01T14:19:00

Source: pzAxe/Shutterstock

Secrets of the trade: Jonathan Hare looks at the science of getting your clothes clean

When you buy washing powder there are generally two varieties to choose from: ‘biological’ and ‘non biological’. Why do we need two types and what exactly is the difference?

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