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Trial Number 3

Trial Purpose:

To evaluate top products on third supplied ink.

Date Run:

03/28/2008

Experiment 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 hand held 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
  0.003 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.

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