To evaluate carpet resoiling characteristics of supplied cleaning product for GS 37 certification
Date Run:
04/09/2010
Experiment Procedure:
Carpet pieces that were previously soiled and cleaned with the supplied product and Liquid Formula 90 (industry standard product) were resoiled by placing the carpet sections into the 1-gallon can, making sure the carpet lined the inner wall of the can. Nalgene® tubing cut into 1/8" pieces were poured into the bucket and 2 grams of the AATCC soil was distributed along the width of the can. The can was lidded and placed into a harness attached to a crank shaft. The crank was turned at an average rate of 42 rpm by hand for 5 minutes in one direction, followed by 5 minutes of rotation in the opposite direction. At the end of the 10-minute soiling regime, the carpet was placed onto a carpet template and vacuumed with a Eureka SuperBroom (Brush-Up, Motor-Driven/Brush-Roll) vacuum for 5 strokes in the forward direction followed by the same number of strokes in the backward direction. The carpet pieces were evaluated again using a BYK specro-guide gloss color meter was used to measure L-values from the surface of the carpet. Visual comparison was also preformed to determine which product looked cleaner.
Trial Results:
The industry standard product resulted in slightly higher post vacuuming color meter readings. Visually, there was little difference between the two carpet sections after resoiling and vacuuming. The table lists the readings for each cleaner.
cleaner
Dilution
sub(part)
final L value
resoil L value
vacuum
MD Steston PC 120
1:64
A
64.91
52.31
56.13
B
71.07
48.72
55.92
C
65.17
52.12
55.37
MD Steston PC 120
1:128
A
69.87
54.55
56.36
B
73.12
62.79
62.91
C
67.73
53.64
56.70
MD Steston PC 120
1:256
A
65.19
53.70
55.34
B
63.97
50.75
49.62
C
68.48
57.45
58.59
MD Steston PC 220
1:64
A
65.44
54.48
56.98
B
66.61
56.87
60.37
C
67.82
54.63
58.22
MD Steston PC 220
1:128
A
61.54
55.16
53.35
B
61.37
48.33
50.19
C
67.84
54.71
59.27
MD Steston PC 220
1:256
A
66.71
53.52
56.89
B
63.58
54.63
58.08
C
71.21
56.27
59.75
Chemspec Liquid 90
1:320
A
64.79
51.61
56.48
B
63.62
48.18
53.48
C
66.42
53.21
56.18
Average L Values
cleaner
Ave Resoil
Ave Vacuum
Difference
MD Steston PC 120
1:64
51.05
55.81
4.76
MD Steston PC 120
1:128
56.99
58.66
1.66
MD Steston PC 120
1:256
53.97
54.52
0.55
MD Steston PC 220
1:64
55.33
58.52
3.20
MD Steston PC 220
1:128
52.73
54.27
1.54
MD Steston PC 220
1:256
54.81
58.24
3.43
Chemspec Liquid 90
1:320
51.00
55.38
4.38
Success Rating:
A follow up test, usually based on company input.
Conclusion:
MD Stetson products PC 120 at 1:64 and PC 220 at 1:64 and 1:256 had comparable resoiling results to the Chemspec Liquid 90 formulation.
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