Starch Test 30ml - Iodine

This is an aid to enhance the clarity of your beverages.

To check that starch conversion is complete, remove a few grains from the mash, place them on a white surface and add 2-3 drops of the iodine.

For fruit ripeness check, cut it in half, and apply to check.

If the iodine turns a dark blue to black in colour this shows that conversion is incomplete.


  • Add 2 ml of Starch Test Reagent to a test tube, using a pipette.
  • Then add 6ml of wort or wine.
  • Secure the test tube cap and shake for a few seconds.
  • If the solution remains an amber or brown colour then starch is not present.
  • If the colour changes to a deep red or blue/black then starch is present and the resulting drink may not be clear.

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