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TESTING pH OF COMMON HOUSEHOLD PRODUCTS<br />
Digital pH Meter Used To Determine The pH Value<br />
Household acids and bases with their pH values displayed.

Fphoto-36559405-1RM.jpg

TESTING pH OF COMMON HOUSEHOLD PRODUCTS
Digital pH Meter Used To Determine The pH Value
Household acids and bases with their pH values displayed.

Copyright:© 1994 Richard Megna - Fundamental Photographs

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Richard Megna