To identify possible cleaners for ink removal using manual cleaning
Date Run:
12/12/2008
Experiment Procedure:
Nine products were selected from the lab's on-line database, www.cleanersolutions.org, based on past testing results matching client supplied information. Two of these products were diluted to 5% using DI water in 400 ml beakers. The other product was used at full strength as recommended by the vendor. All nine products were used at room temperature.
Peweighed steel coupons were coated with the Dykem Black Staining Color ink (123-86-4, 64-17-5, 71-36-3, 9004-70-0, 141-78-6, 109-60-4, 67-63-0, 1333-86-4) contaminant using a handheld swab. The contaminant was allowed to dry for about an hour. Once dry, the coupons were weighed a second time to determine the amount of ink applied.
Three coupons were placed into a Gardner Straight Line washability unit (designed for manual cleaning testing). The cleaning solutions were applied to the three coupons and allowed to sit for one minute. Simulated manual cleaning was run for 40 cycles or about one minute. Following cleaning, the coupons were dried 30 seconds using air blow off with dry compressed air at room temperature. Final weights were measured and efficiencies were calculated for each coupon cleaned.
Trial Results:
Several of the selected products caused the final weights of the coupons to increase. Some of these left a residue behind on the surface, resulting in the increased weights. There were four products that were able to remove the ink from the steel coupons using manual wiping. The table lists the initial weight of the ink, the final weight and the cleaning efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Soyclear 1500
0.0159
0.0213
-33.96
0.0442
0.0542
-22.62
0.0367
0.0448
-22.07
Ink Zapper
0.0230
0.0103
55.22
0.0375
0.0144
61.60
0.0338
0.0216
36.09
Citrus Soy Solvent C&D
0.0373
0.0386
-3.49
0.0429
0.0474
-10.49
0.0323
0.0386
-19.50
Graffiti Remover SAC
0.0491
0.0288
41.34
0.0372
0.0179
51.88
0.0336
0.0200
40.48
Inproclean 4000 T
0.0387
0.0469
-21.19
0.0457
0.0520
-13.79
0.0352
0.0467
-32.67
Smartsolve 605
0.0412
0.0086
79.13
0.0351
0.0102
70.94
0.0377
0.0006
98.41
SC Aircraft & Metal
0.0226
0.0246
-8.85
0.0280
0.0280
0.00
0.0175
0.0183
-4.57
Micro 90
0.0107
0.0105
1.87
0.0457
0.0415
9.19
0.0380
0.0365
3.95
EP 921
0.0262
0.0030
88.55
0.0122
0.0008
93.44
0.0510
0.0126
75.29
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
A follow up test will be conducted on second batch of possible alternatives. These four effective alternatives will be evaluated on the supplied grease.
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