To evaluate successful products at lower concentration
Date Run:
06/24/2008
Experiment Procedure:
Two products were selected from the previous trial based on successful removal of the resin and had the ability to be diluted. One product was included based on its similarity to a previously tested product which was not dilutable with water. Each of the three products were used at 50% strength in 300 ml glass beakers. Solutions were used at room temperature. Nine preweighed aluminum coupons were coated with the Mereco 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 20 minutes using no agitation. Following cleaning, coupons were rinsed for 15 seconds in tap water at 68 F and dried using air blow off for 30 seconds at room temperature. Final weights were recorded, and efficiencies were calculated.
Trial Results:
Initial immersion for 20 minutes using the diluted solvents only had marginal success with the Smart Solve 605 working the best at 56.57%. The follow up immersion and single wipe improved the effectiveness of the cleaning solvents, with all three removing more than 85%. The table lists the amount of resin added, the amount remaining and the efficiency for each coupon cleaned using immersion cleaning and the results from the wiping action.
Cleaner
Initial wt
Final wt
% Removed
Smart Solve 605
2.4759
1.5069
39.14
2.2929
0.8837
61.46
1.6702
0.5161
69.10
Floor Finish Remover
3.4086
3.0423
10.75
1.7261
1.0318
40.22
1.7160
1.2178
29.03
Maxi Solv
3.2685
2.6068
20.24
2.6387
1.8270
30.76
2.4476
1.6394
33.02
Additional 5 minute soak with wiping
Cleaner
Initial wt
Final wt
% Removed
Smart Solve 605
1.5069
0.0109
99.28
0.8837
0.0537
93.92
0.5161
0.0411
92.04
Floor Finish Remover
3.0423
0.4770
84.32
1.0318
0.1447
85.98
1.2178
0.1140
90.64
Maxi Solv
2.6068
0.1178
95.48
1.8270
0.3517
80.75
1.6394
0.1857
88.67
Success Rating:
Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
Conclusion:
The same three dilutable products will be tested at longer times without the wipe.
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