To evaluate the efficiency of a product for cleaning window surfaces
Date Run:
10/30/2015
Experiment Procedure:
Three separate 30”X40” section of window was marked off as a testing surface. Five grams of AATCC soil 122 and 400 ml water was combined to create a representative indoor soil solution. The mixture was applied by taking a paint roller and soaking it in the soil solution. The wet roller was passed over a single window section 25 times. The soiled surface was allowed to dry for 20 minutes. Once the soil was dry, testing took place following the manufacturer’s cleaning recommendations.
For cleaning using the solutions and paper towel, a bottle containing the cleaning liquid was weighed prior to spraying window. The window was sprayed until the tester believed the window to be covered in a fine mist over the test surface and a second weight was recorded to determine the amount of cleaner used. The number of sprays was also recorded. The towel was then wiped over the window until the tester felt the cleaning was completed. Timing will start upon the initial spraying of the surface and end when the third window is completed. Time to clean each window will be recorded as well as the overall time. The number of paper towels used was recorded as well as the number of folds made during cleaning.
For the supplied tool and microfiber, the weight of the cleaning solution was measured prior to applying 2 sprays to the microfiber and then after spraying the towel. Timing began at the initial spraying of the towel and concluded at the end of cleaning the third window. Individual window cleaning times were recorded as well as the overall cleaning time.
Other observations were recorded about height of tester, use of step ladder
Tools Evaluated: Paper Towel- Bounty Dura Towel, Unger Microfiber Pad and holder. Cleaning Solution: Windex
Trial Results:
The paper towel cleaning on average used more cleaning product and required more time to complete the cleaning of three windows. The paper towel cleaning averaged just over 3 minutes and 17 seconds to clean and used about 14 grams of cleaning solution to complete three windows. Tester 1, being the shortest (5’2”) participant, needed the use of a step stool. The stool resulted in an average of 12 seconds to each window section cleaned for both the paper towel and the tool.
Tester 1
Time
Sprays
Bottle wt
Wt of cleaner
paper towel
01:15.8
9
165.4521
6.0617
1:32
9
159.3904
7.7584
1:29
9
151.632
5.5402
total time
146.0918
Total wt used
04:15.8
19.3603
Averaged 10-14 seconds between windows to move stool
used ladder
1 towel
3 folds
Tester 2
Time
Sprays
Bottle wt
Wt of cleaner
paper towel
46
8
140.36
3.3305
47
8
137.0295
4.9207
47
8
132.1088
5.5715
total time
126.5373
Total wt used
2:20
13.8227
1 towel
3 folds
Tester 3
Time
Sprays
Bottle wt
Wt of cleaner
paper towel
27.41
7
124.0888
3.9083
25.5
5
120.1805
3.4839
24.53
4
116.6966
2.5453
total time
114.1513
Total wt used
01:17.5
9.9375
1 towel
1 fold
The cleaning time for the Unger tool averaged 1 minute 36 seconds to clean the three windows, using 3.7 grams of cleaner.
Tester 1
Time
Sprays
Bottle wt
Wt of cleaner
tool
38.31
2
151.6683
0.7067
42.28
2
150.9616
1.0958
44.63
2
149.8658
1.3426
total time
148.5232
Total wt used
02:05.2
3.1451
Tester 2
Time
Sprays
Bottle wt
Wt of cleaner
tool
28.91
2
126.5169
1.0868
28.23
2
125.4301
0.8989
28.48
2
124.5312
0.4432
total time
124.088
Total wt used
1:27
2.4289
Tester 3
Time
Sprays
Bottle wt
Wt of cleaner
tool
29.23
2
108.411
1.0141
25.16
4
107.3969
1.2428
22.38
2
106.1541
1.4367
total time
104.7174
Total wt used
01:16.8
3.6936
In each test run tester 1 was the slowest and tester 3 was the fastest. The difference between cleaning times and amount used were minimized when using the Unger tool as compared to paper towel. The tool provides a more consistent and efficient cleaning method for windows.
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
In each test run tester 1 was the slowest and tester 3 was the fastest. The difference between cleaning times and amount used were minimized when using the Unger tool as compared to paper towel. The tool provides a more consistent and efficient cleaning method for windows, working twice as fast and requiring 4.5 times less cleaning product.
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