Amazon.com: Ascorbic Acid Vitamin C Food Test
0.01 to 0.1%. The Ascorbic Acid Test Strip is used to detect Ascorbic Acid, or Vitamin C in graduations of 0, 0.01, 0.02, 0.05, & 0.1%. The Ascorbic Acid test strip is based on discoloration of blue red-ox indicator, depending on the concentration of ascorbic acid.
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