To evaluate client’s products for various substrates and contaminants.
Date Run:
10/28/1998
Experiment Procedure:
Pre-weighed coupons were over contaminated with the cutting oil. Contaminated weights were recorded. Five cleaners were provided by the client for evaluation of cleaning efficiencies. Each product was made into 5% solutions using DI water in 1000 mL beakers. Each solution was heated to 130 F on a hot plate. Three coupons were cleaned in each chemistry for 5 minutes with stir-bar agitation. Coupons were rinsed in 120 F tap water for 30 seconds and dried with Master Appliance Corp. Hot-air gun model HG-301A. After coupons cooled to room temperature, a final clean weight was made and cleaning efficiencies were calculated.
Of the five chemistries tested only two resulted in high cleaning efficiencies, 7000 and 7100. Most of the products were observed to start removing the oil within the first minute of cleaning. Table 1 lists the cleaning efficiencies for each cleaner.
Table 1. Cleaning Efficiencies
7100
7000
Low Foam
7300
9000
Coupon 1
95.35
85.60
81.21
40.06
40.97
Coupon 2
90.23
88.60
76.26
39.53
47.36
Coupon 3
91.25
68.38
54.63
26.25
67.99
Average
92.28
80.86
70.70
35.28
52.11
Std. Dev.
2.71
10.91
14.14
7.82
14.12
Success Rating:
A follow up test, usually based on company input.
Conclusion:
Two products were found to have cleaning efficiencies over 80% under the experimental conditions. Further testing will be conducted using different contaminants. All other conditions will remain the same.
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