To evaluate supplied products for glass cleaning using manual cleaning
Experiment Procedure:
Supplied products were diluted with room temperature water to the requested dilution. Preweighed Glass; Chrome; Mirror coupons were coated with SSL Soil 2 (Glass soap scum: Water 51.5%, Hair gel 25.6%, Toothpaste 10.4%, Shaving cream 5.3%, Hair spray 3.7% and Spray deodorant 3.5%) using a handheld swab and allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.
Three coupons were placed into a Gardner Straight Line Washability (SLW) unit. A Wypall L20 reinforced wipe was attached to the cleaning sled and soaked with 1 spray of cleaning solution. Each coupon was sprayed 1-3 times with the same cleaning solution. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 5 cycles (~10 seconds). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded and efficiencies recorded. Visual observations were made on the coupons for spotting and filming following the general guidelines set forth in the CSPA DCC 09A. Filming is best recognized as "haziness" or overall "milkiness", while streaking is best identified as dried droplets or "spotting", usually found strung together into thin white lines. Each coupon was evaluated separately for filming and streaking, (i.e., product residues without added soil), according to a scale of "1" to "7" where;
Filming Streaking
1 = high filming 1 = high streaking (poor performance) 7 = no visible filming 7 = no visible streaking (excellent performance)
Chemistries Evaluated: WC-3, Windex
Trial Results:
Cleaner
Initial wt
Final wt
% Removed
WCN 3 Glass
0.1236
0.0008
99.35
0.1377
0.0027
98.04
0.1368
0.0058
95.76
WCN 3 Chrome
0.1268
0.0227
82.1
0.147
0.0273
81.43
0.1431
0.0189
86.79
WCN 3 Mirror
0.1346
0.0024
98.22
0.1304
0.0061
95.32
0.1435
0.0063
95.61
Windex Glass
0.1261
0.0488
61.3
0.132
0.0331
74.92
0.1246
0.0496
60.19
Windex Chrome
0.1288
0.0027
97.9
0.1188
0.0075
93.69
0.1216
0.0039
96.79
Windex Mirror
0.1305
0.0021
98.39
0.1251
0.0032
97.44
0.1317
0.0062
95.29
Visual Analysis
Cleaner
Coupon
F
S
F
S
F
S
Average F
Average S
WCN Glass
15
2
4
3.5
4
4
4
3.7
4.0
WCN Glass
8
1.5
2
3
4.5
3
5
2.5
3.8
WCN Glass
22
1.5
1.5
3.5
4.5
4
4
3.0
3.3
WCN Mirror
4
1
3
3.5
4
4
2
2.8
3.0
WCN Mirror
21
1
3.5
4
4
4
4
3.0
3.8
WCN Mirror
16
1
3
4
4.5
4
4
3.0
3.8
Windex Glass
34
4
2
4
4
1
5
3.0
3.7
Windex Glass
41
4
3
4
4
2
5
3.3
4.0
Windex Glass
45
3
3
3
3.5
2
5
2.7
3.8
Windex Mirror
114
3
3
2
2
2
5
2.3
3.3
Windex Mirror
2
4
4
2.5
2
2
5
2.8
3.7
Windex Mirror
4
3.5
4
3
1.5
4
4
3.5
3.2
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Each of the cleaners exhibited the similar levels of soil removal for each surface with the WCN 3 removing more than Windex. Based on the filming and streaking table, we can see that Windex and WC3 were nearly identical.
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