Trial #1
To perform blind cleaning verification testing on sample “button” parts that were cleaned by products A, B, and C
Contact Angle
DI water was used in a syringe to record the contact angle. One drop of DI water was dropped onto the smooth surface button part, and the computer software measured the contact angle. Pictures of each contact angle sample were captured.
White Glove Test
A clean white cotton swab was taken and swiped over the smooth surface of the button. The cotton swab was then observed to see if any dirt had been obtained from the surface.
Contact Angle Measurements
| A
|
Sample
|
Contact Angle (°)
|
B
|
Sample
|
Contact Angle (°)
|
C
|
Sample
|
Contact Angle (°)
|
| 1
|
64.70
|
1
|
81.35
|
1
|
75.29
|
| 2
|
79.13
|
2
|
73.30
|
2
|
75.88
|
| 3
|
75.91
|
3
|
72.75
|
3
|
72.76
|
| 4
|
82.91
|
4
|
75.78
|
4
|
73.94
|
| 5
|
77.92
|
5
|
75.77
|
5
|
74.87
|
| 6
|
73.60
|
6
|
75.63
|
6
|
77.86
|
| 7
|
75.84
|
7
|
76.11
|
7
|
74.84
|
| 8
|
78.00
|
8
|
78.57
|
8
|
78.57
|
| 9
|
79.18
|
9
|
74.93
|
9
|
73.92
|
| 10
|
92.62
|
10
|
75.21
|
10
|
78.50
|
| Average
|
77.98
|
Average
|
75.94
|
Average
|
75.64
|
White Glove Test
| A
|
Sample
|
Results
|
B
|
Sample
|
Results
|
C
|
Sample
|
Results
|
| 1
|
Clean/No residue
|
1
|
Clean/No residue
|
1
|
Clean/No residue
|
| 2
|
Clean/No residue
|
2
|
Clean/No residue
|
2
|
Clean/No residue
|
| 3
|
Clean/No residue
|
3
|
Clean/No residue
|
3
|
Clean/No residue
|
| 4
|
Clean/No residue
|
4
|
Clean/No residue
|
4
|
Clean/No residue
|
| 5
|
Clean/No residue
|
5
|
Clean/No residue
|
5
|
Clean/No residue
|
| 6
|
Clean/No residue
|
6
|
Clean/No residue
|
6
|
Clean/No residue
|
| 7
|
Clean/No residue
|
7
|
Clean/No residue
|
7
|
Clean/No residue
|
| 8
|
Clean/No residue
|
8
|
Clean/No residue
|
8
|
Clean/No residue
|
| 9
|
Clean/No residue
|
9
|
Clean/No residue
|
9
|
Clean/No residue
|
| 10
|
Clean/No residue
|
10
|
Clean/No residue
|
10
|
Clean/No residue
|
Samples A, B, and C bonded metal buttons were all determined to be effectively cleaned based on the contact angle and the white glove test.
No relation