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Trial Number 9

Trial Purpose:

To evaluate different cleaning parameters for resin cleaning

Date Run:

07/10/2008

Experiment Procedure:

The top six products from the previous trials were selected based on successful removal of the resin were used at full strength in 300 ml glass beakers. Solutions were used at room temperature. Twenty-four preweighed aluminum coupons were coated with the ECN 809 Base Black resin using a swab. Coupons were weighed a second time to determine the amount of soil added. Three coupons were immersed into each product and cleaned for 60 minutes using no agitation. The coupons were rinsed with tap water for 15 seconds at 68 F and were dried using compressed air blow off 30 seconds at room temperature. Final weights were recorded, and efficiencies were calculated. Coupons also were visually analyzed to determine the level of residue left on the coupons.

Trial Results:

All of the products removed more than 98% of the resin from the aluminum coupons. The table lists the amount of soil added, the amount remaining after cleaning and the calculated efficiency for each coupon cleaned.

Cleaner Initial wt  Final wt % Removed  Visual Residue Rank
EZ Solv 1.9928 0.0106 99.468 1
  1.9004 0.0145 99.237  
  3.5904 0.0109 99.696  
Maxi Solv 2.1188 0.0095 99.552 5
  1.6045 0.0134 99.165  
  1.8768 0.0151 99.195  
Graffiti Remover SAC 1.4013 0.0159 98.865 2
  2.8620 0.0111 99.612  
  2.5483 0.0397 98.442  
Green Solutions 1.5362 0.0019 99.876 6
  1.6538 0.0205 98.76  
  2.7582 0.0896 96.752  
Bio T Max 2.0724 0.0126 99.392 3
  1.9152 0.0141 99.264  
  1.6091 0.0120 99.254  
Smart Solve 605 1.9921 0.0149 99.252 4
  1.4994 0.0127 99.153  
  2.5547 0.0194 99.241  

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Residues from each of the three rinsing/drying scenarios did not vary significantly from trial to trial. The SC EZ Solv was the most consistent, having been ranked as the lowest residue in 2 of the three trials.

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