To evaluate carpet resoiling characteristics of supplied cleaning product for GS 37 certification
Date Run:
05/05/2010
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.
Trial Results:
The two dilutions of PC 120 both dilutions had better resoiling characteristics as shown by the higher light meter readings and the lower difference in final L value and extraction L values. The PC 220 at the 1:64 dilution had similar results to the industry comparative product. All products and dilutions worked better than water alone. The table list the L-value reading for each section of carpet before resoiling and after vacuuming.
Cleaner
Part
Extraction
Ave E
Resoil
Ave R
Difference
Chemspec Liquid 90 1:640
A
72.65
72.05
54.49
55.72
16.33
B
74.73
59.17
C
68.77
53.51
MD Steston PC 120 1:64
A
75.67
72.3
57.43
59.22
13.08
B
71.95
57.38
C
69.27
62.84
MD Steston PC 120 1:128
A
72.14
69.78
58.34
56.49
13.29
B
65.96
53.3
C
71.24
57.82
MD Steston PC 220 1:64
A
73.95
73.92
59.53
56.57
17.35
B
73.09
52.2
C
74.71
57.98
MD Steston PC 220 1:128
A
74.41
70.08
47.76
51.7
18.39
B
66.37
50.63
C
69.47
56.7
Water
A
70.85
70
59.79
51.17
18.83
B
71.26
44.31
C
67.88
49.4
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The PC 120 at 1:64 and 1:28 and the PC 220 were better than or comparable to the conventional non-green product for resoiling.
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