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Why use deionized water in science experiments



STUDENT - Philadelphila, PA


It's hard to tell if this is just a homework question or you have an actual interest, but deionized water is pure water without contaminants that might affect your experiments. For example if you are trying to determine if a particular sample solution has some particular element in it, you would mess up your experiment if you diluted the sample with tap water that contained that element.

Ted Mooney,
Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey


If I remember my good old chemistry days, distilled water is better that deionized water for scientific experiments. It is pure water and no solids, ionized or deionized.

Mandar Sunthankar
- Fort Collins, Colorado

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