Test #12
Home Up The Black Hole Literary Review Wm. E. Allendorf, Prop.

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TEST #12


  1. Demonstrate UV-Florescence in Detergents when applied to fabric before washing
  2. Demonstrate UV-Florescence in Detergents when applied to fabric before washing


Before washing:

After washing

Click on Thumbnails for the original pics from the camera

In these three exposures, you should be able to see top to bottom

bulletA green felt fabric that was on the test bench throughout
bulletThe controls
bulletA hunting sock
bulletThe blaze camo sample

Description of test:  From left to right, and top to bottom: 

  1. Control shot made with flash
  2. Same setup, except lit by Black Light .
  3. I kept noticing little sparkles on the sock and fabric. It turned out to be cotton lint. Here is a detail of it.

Conclusion:  This was a before and after test.  I placed a dribble (about 2 cc) of each of the three detergents from Test 10 on the blaze camo.  Tempo is on the left, All is in the middle and Ultra-Gain is on the right.  They all three glowed, but the Ultra-Gain glowed the least. Funny, but it does not even claim any of this Free/Clear claptrap. I then put the fabric and a hunting sock into the washing machine and ran them as a normal load.  If there had been any glowing at all, I would have gone further with testing, but you can see that there was no appreciable glow to the camo sample.  The green hunting sock, did pick up a bunch of cotton lint that glowed considerably. You can see that on the picture on the right.

One other thing.  In examining the middle shot on the computer, I did notice a small patch of florescence. In going through my other pictures, I realized that this was a left over stain from test #7 on 11/6. The detergent had been on there for over a month and had not come off, even after washing.  However, it's subtle.  If you don't see it, I won't be surprised, but it is there.

Bottom line: The addition of UV brighteners to fabric via detergent does not seem to appreciably enhance the florescence of a non-fluorescing fabric, at least to a level that could be documented in the tests.




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