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Eight-year-old S. Hariraj is a Foldscope devotee. He's used it to look at the milk from the cows his parents raise. Though the milk looks creamy, the Foldscope reveals a world of microorganisms. "It ...

Built with sturdy materials, yet manufactured economically, the AmScope M150C is portable and the PS25 version comes with a selection of prepared slides; a good choice for a beginner to use at home, ...