1. × Investigation Report Form

      Searching for the Most Acidic Citrus

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    2. Specify the location of the experiment 
      Drag the marker to indicate the location. Remember, you can zoom into the map for a more precise location.
      Location: ,
    3. Date of the experiment. 
    4. Kind of the citrus  Specify the type of citrus fruit that you check:
    5. Country or region where the fruit was grown: 
      This question is optional.
    6. Photo of fruits 
      Please upload from 1 to 10 pictures
      This question is optional.
    7. pH juice. The first measurement. 
    8. pH juice. The second measurement. 
    9. pH juice. The third measurement. 
    10. The average pH value of the juice.  You can learn the average pH when you submit your Report Form or in the “Findings” tab (in your Report Form).
      This field will be filled in automatically after the Report Form is submitted
    11. What method (sensor, meter, paper) did you use to determine the value of pH? 
    12. pH of your own taste  Taste your citrus fruit before extracting its juice for formal pH measurement . Give the fruit an “acid score”: ‘very acid’ (+++++), ‘moderately acid’ ++++, ‘mildly acid’ +++, somewhat acid (++), slightly acid (+) and not acid at all (0). Conclude, is it true that an acid taste and low pH–value correlate with each other?
    13. On the basis of your results, and what you know about the acidity of citrus, try to predict what which citrus fruit will be found "world champion in acidity."