THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY
Citric and ascorbic acid crystals, polarised light micrograph. Ascorbic acid, also known as vitamin C, is a nutrient essential for health. Citric acid is a common acid found in citrus fruits, which is used as a food additive, preservative and buffer.
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