Trial Purpose:
To evaluate top products on third supplied ink.
Date Run:
03/28/2008Experiment Procedure:
The top ten successful products from the previous trial were used at full strength and room temperature. Twenty preweighed coupons were coated with the supplied Nu Mark Company NU-Mark marker (black ink). Once dry, a second weight was recorded to determine the amount of ink added to the coupon. As in the last trial, two coupons were used per cleaning alternative. A handheld swab was immersed into the cleaning product and then manual wiped across the coupon for up to one minute. Following the cleaning, the coupons was wiped dry for 5 seconds. Observations were made, final coupon weights recorded, and the average efficiencies were calculated.
Trial Results:
Even though some of the calculated efficiencies were below 85%, all products evaluated removed all of the ink from the aluminum coupons in under 20 seconds. Some of the lower efficiencies may have been the result of the cleaners leaving behind a residue after cleaning. A further wiping of the coupons with a dry towel could take care of any residue. The table below lists the amount of ink applied, the amount remaining, the efficiency and the time needed to clean the ink.
| Cleaner | Initial wt | Final wt | % Removed | Time |
| Soy Clear 1500 | 0.0038 | 0.0019 | 50.00 | 10 |
| 0.0033 | 0.0022 | 33.33 | ||
| Ink Zapper | 0.0046 | 0.0010 | 78.26 | 10 |
| 0.0053 | 0.0010 | 81.13 | ||
| Methyl Ester 1618 | 0.0050 | 0.0012 | 76.00 | 12 |
| 0.0068 | 0.0018 | 73.53 | ||
| Citrus Soy Solvent Cleaner & Degreaser | 0.0058 | 0.0001 | 98.28 | 8 |
| 0.0054 | 0.0005 | 90.74 | ||
| Graffiti Remover SAC | 0.0062 | 0.0005 | 91.94 | 8 |
| 0.0050 | -0.0001 | 102.00 | ||
| BioRenewables Industrial Degreaser | 0.0036 | 0.0018 | 50.00 | 8 |
| 0.0030 | 0.0003 | 90.00 | ||
| EP 921 | 0.0026 | 0.0005 | 80.77 | 7 |
| 0.0044 | -0.0001 | 102.27 | ||
| BG Solv 717 Ink & Graffiti Cleaner | 0.0045 | -0.0003 | 106.67 | 6 |
| 0.0044 | 0.0002 | 95.45 | ||
| Graffiti remover | 0.0036 | 0.0007 | 80.56 | 7 |
| 0.0030 | 0.0002 | 93.33 | ||
| Smart Solve 605 | 0.0026 | 0.0004 | 84.62 | 7 |
| 0.0045 | 0.0011 | 75.56 |
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.Conclusion:
All ten products will be used on the next supplied ink.
