Jungle Water Test/Potassium Permanganate test

[redright28]

The sample on the left had 2 drops of PP added to 5ml tank sample.
The sample in the middle had 1 drop of PP added to 5ml tank sample.
The sample on the right is a tank sample with one drop off PP 24 hours after the samples were taken.  Photo was taken immediately after drawing this sample.

I understand the middle sample shows a slight reduction in the water Redox, which is exactly where I want to be -- confirmed by ORP reading of 190-210 mv.

Question....I was expecting the color for the sample on the left to remain the same since I added drops of the oxidizer.  I am little confused why the color was reduced, as if I added a reducer like Prime to the water.
Am I reading this incorrectly? Did the extra drop cause the PP to overcome the reduction in the water resulting in the dead organic material? 

What is throwing me off is the change to a clear color.  The same result as if I ADDED an reducer like Prime to the water.

Thanks!
Greg

Attachments:

[Carl]

An oxidizer such as PP can easily overcome a reducer by adding more.

If no reducer is added and it changed color immediately, I would think would be due to contamination of the test vial

Carl

[devonjohnsgard]

Interesting test.