Vitamin C: the DCPIP test sim
Put the same 25.0 cm³ of fresh blue DCPIP in the flask for each trial.
Vitamin C · the DCPIP test · covers the GCSE, IGCSE, O-Level topic
What the sim shows
Put the same 25.0 cm³ of fresh blue DCPIP in the flask for each trial. Add the clear sample drop by drop and stop as soon as the blue disappears. No heating is needed. Run drops pauses at the first colourless drop. Read the bottom of the meniscus at eye level; volume added is the final reading minus the starting reading (0.40 cm³). A smaller endpoint volume means more vitamin C per cm³. These are illustrative samples calibrated using a 0.80 mg/cm³ standard; each simulated drop is 0.05 cm³.
- Flask: blue DCPIP becomes colourless
- Right: meniscus above, the same flask enlarged below
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