To evaluate the efficacy of ServeCo Glass/Hard Surface Cleaner & Protector against Windex for the removal of glass soap scum from chrome, glass, and mirror glass.
Date Run:
01/21/2025
Experiment Procedure:
Nine pre-weighed coupons per cleaner, consisting of three of each substrate (chrome-plated steel, glass, and mirror glass), were soiled with one gram of SSL 2 Glass Soap Scum using a handheld swab. The coupons air-dried at room temperature (68°F) for 24 hours and were then weighed to determine the contaminated weight.
Three coupons of the same substrate were mounted on the Straight Line Washability Unit (SLW) with a WypAll cloth (provided by ServeCo) attached to the cleaning sled. Each WypAll and coupon received two sprays of the product (reduced from the typical three sprays based on product recommendations for a light coating) before running the SLW for 20 cycles (30 seconds). After the cleaning cycle, the coupons were air-dried, and final weights were recorded. A final cleaning cycle was performed on the SLW using a microfiber towel without cleaner to remove residual soil.
Three evaluators performed visual ratings for filming and streaking of each coupon following the cleaning cycle, and the ratings were averaged to determine overall scores for filming and streaking. The following visual rating keys were applied:
Rating
Cleanliness Level
1
No Visible Filming/Streaking (Excellent Performance)
2
Minimal Filming/Streaking
3
Slight Filming/Streaking
4
Noticeable Filming/ Streaking
5
Considerable Filming/ Streaking
6
Severe Filming/Streaking
7
High Filming/ Streaking (Poor Performance)
Filming:
Filming refers to the presence of a uniform or patchy haze or residue left on the glass surface after cleaning. This may obscure clarity and produce a dull or cloudy appearance when viewed at different angles under light. Filming indicates incomplete removal of the cleaning product, soil, or contaminants during the cleaning process.
Key Attributes for Evaluation:
Presence and intensity of haze or residue.
Uniformity of the film across the surface.
Impact on surface clarity when observed under direct and ambient light.
Streaking: Streaking refers to visible lines or smears left on the glass surface after cleaning, typically caused by uneven distribution or removal of cleaning product or contaminants. Streaking affects the optical uniformity of the substrate and may be most noticeable under light reflection.
Key Attributes for Evaluation:
Number and length of streaks.
Visibility under direct or reflected light.
Contrast of streaks against the clean surface.
Trial Results:
Cleaner
Substrate
Initial wt. of cont.
Final wt. of cont.
% Cont. Removed
Average % Removal
Overall Cleaner Average % Removal
ServeCo Glass Cleaner
Chrome-plated steel
0.1365
0.0041
97.00
93.33
92.06
0.1421
0.0073
94.86
0.1347
0.0160
88.12
Glass
0.1866
0.0085
95.44
94.64
0.1657
0.0141
91.49
0.1362
0.0041
96.99
Mirror
0.1345
0.0083
93.83
88.20
0.1418
0.0159
88.79
0.1388
0.025
81.99
Windex
Chrome-plated steel
0.1268
0.0300
76.34
81.18
82.42
0.1357
0.0216
84.08
0.1339
0.0226
83.12
Glass
0.1279
0.0240
81.24
88.17
0.1345
0.0038
97.17
0.1395
0.0194
86.09
Mirror
0.1394
0.0148
89.38
77.91
0.1345
0.0501
62.75
0.1343
0.0247
81.61
Filming Visual Ratings:
Cleaner
Substrate
Evaluator A
Evaluator B
Evaluator C
Average Filming Rating
Overall Filming Rating
ServeCo Glass Cleaner
Chrome-plated steel
3
3
3
3
3.66
3
3
3
3
3
3
Glass
3.5
3.5
3
3.33
3.5
3.5
3
3.5
3.5
3
Mirror glass
4.5
4.5
5
4.66
4.5
4.5
5
4.5
4.5
5
Windex
Chrome-plated steel
3
3
3
3
3.55
3
3
3
3
3
3
Glass
4.5
4.5
4
3.66
4
4
3
3
3
3
Mirror
4
4
4
4
4
4
4
4
4
4
ServeCo performed relatively similar to Windex in filming visual observations on each substrate and overall performance.
Streaking Visual Ratings:
Cleaner
Substrate
Evaluator A
Evaluator B
Evaluator C
Average Streaking Rating
Overall Streaking Rating
ServeCo Glass Cleaner
Chrome-plated steel
2
2
2
2
3.44
2
2
2
2
2
2
Glass
4
3.5
4
3.66
4
3.5
4
4
3.5
4
Mirror glass
5
4.5
5
4.66
5
4.5
5
5
4.5
5
Windex
Chrome-plated steel
2
2
2
2
3.99
2
2
2
2
2
2
Glass
6
6
6
5.33
5
5
5
5
5
5
Mirror glass
5
5
5
4.66
4
4
4
5
5
5
ServeCo Glass Cleaner had less streaking overall on the surfaces than Windex.
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
ServeCo Glass/Hard Surface Cleaner & Protector was more effective than Windex at removing glass soap scum from chrome-plated steel, glass, and mirror glass.
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