To evaluate cleaners on supplied grease using immersion cleaning
Date Run:
03/04/2004
Experiment Procedure:
Eight cleaners were selected from the laboratories database of past testing based on supplied data from client. Six aqueous based cleaners were diluted to 10% using DI water in 250 ml beakers. Tw0 semi-aqueous products were used at full strength also in 250 ml beakers. A ninth product was added as the client's current cleaner and diluted to 10%. All nine products were heated to 130 F on a hot plate. Twenty-seven preweighed ceramic coupons were coated with client supplied grease, Hibrenia Way Apiezon M1 Grease. The grease was applied directly to the coupon surface using a swab and then weighed a second time. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Coupons were rinsed in tap water for 15 seconds at 120 F, followed by air blow off at room temperature for 30 seconds. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.
Trial Results:
One product, Metabolix E3HB removed over 94% of the grease within 5 minutes of immersion cleaning. Four other products showed signs of starting to remove the grease, removing between 30 and 50% of the grease. The current cleaner was found to have the second lowest grease removal, about 4%. The table lists the amount of soil added, the amount remaining after cleaning and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Liquinox
0.1391
0.1311
5.75
0.1235
0.1182
4.29
0.1295
0.1275
1.54
Aquavantage 1400
0.1685
0.1637
2.85
0.1463
0.1059
27.61
0.1740
0.1685
3.16
AeroMaster
0.1467
0.1469
-0.14
0.0845
0.0846
-0.12
0.2135
0.2092
2.01
DBE 6
0.1434
0.1427
0.49
0.1256
0.0967
23.01
0.1624
0.1604
1.23
SC Aircraft
0.1720
0.0115
93.31
0.1648
0.1287
21.91
0.0951
0.0629
33.86
Micro 90
0.0890
0.0232
73.93
0.0772
0.0668
13.47
0.0728
0.0615
15.52
Metalnox 6314
0.0729
0.0713
2.19
0.1425
0.1283
9.96
0.1393
0.0131
90.60
E3HB
0.0746
0.0026
96.51
0.1284
0.0026
97.98
0.0558
0.0066
88.17
Inproclean 3800
0.0674
0.0088
86.94
0.0802
0.0493
38.53
0.0809
0.0546
32.51
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The five products that removed over 30% of the grease will be retested using ultrasonics. The client's current cleaner will also be tested for comparative measures.
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