Trial Purpose:
To evaluate successful cleaners on supplied parts.
Date Run:
06/04/2002Experiment Procedure:
The four products from the previous trial were used at full strength and heated to 130 F on a hot plate in 400 ml beakers. Using a soft paper towel soaked in each heated solution, lenses were wiped until the ink was removed. The time required to clean was recorded. A second evaluation with the products involved soaking the lenses in the solution for 5 minutes, making observations through out the soak. At the end, the lenses was wiped for a maximum of 10 seconds. The lenses were then rinsed in a tap water rinse at 120 F for 10 seconds and wiped dry.
Trial Results:
All products were able to remove all of the ink in less than 1 minute during the manual wipe cleaning. Loctite 7360 was the fastest, removing the ink within 17 seconds. None of the products dissolved the ink from the lenses within the 5 minute soak cleaning. The following table lists the observations made during each cleaning process.
| Wipe Observations | Soak Observations | W ank + | S rank / 2 | = | Overall Rank | |
| 24 seconds | No dissolving, wipe at end was easy | 3 | + | 2 | = | 2.5 |
| 19 seconds | Wipe did not remove all the ink | 2 | + | 4 | = | 3 |
| 17 seconds | Possible dissolving, easily wiped | 1 | + | 1 | = | 1 |
| 48 seconds | Small amount of ink left | 4 | + | 3 | = | 3.5 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
A follow up test will be run on the top two products, Loctite 7360 and Bio T Max, to determine how long to soak the lenses to remove the ink with no wiping.
