To evaluate client requested cleaners based on Vendor supplied information.
Date Run:
12/14/1999
Experiment Procedure:
The cleaners used were diluted to 5% (except one) using DI water in 600 ml beakers. Cleaning of the coupons was performed using stir-bar agitation at 130 F (except one) for five minutes. Coupons were rinsed using tap water at 120 F for two minutes and dried at room temperature for two hours. Gravimetric analysis was used to determine effectiveness.
SUBSTRATE MATERIAL: Table 1 lists the coupons materials used Table 1. Substrates
Aluminum
202-2024 T-3
202-7075 T-6
Stainless Steel
202-410 B-85
Brass
202-260
Cold Rolled Steel
202-1020
CONTAMINANTS: Table 2 lists the contaminants and their CAS#s Table 2. Contaminants Used
Contaminant
CAS #
oil
64741-89-5
64742-53-6
64741-44-2
lubricant
64742-57-0
8052-42-4
64742-62-7
64742-47-8
grease
64742-47-8
CONTAMINATING PROCESS USED: All contaminants were applied to coupons using handheld swabs.
Trial Results:
Both Ensovle Grease Feast and United Laboratories United 450 All Clear products were effective in removing all three contaminants tested. Grease Feast efficiency ranged from 88-100% and the United 450 removed 91-100%. The other United Laboratories product, United 2002, had much lower removal of the contaminants. The oil and grease were under 70% removal and the coupons with the lubricant actually gained weight. This could be signified that the product was acting in different manner than the other products. Instead of dissolving the contaminant into solution, the cleaning product was being absorbed into the lubricant, causing swelling, and may eventually lift the contaminant off the coupon. Table 4 lists the cleaning results obtained for the three cleaning solutions and the three contaminants.
Table 4. Cleaning Results
Company Name
Product Name
Classification
Concentration
Temperature
Ensolve Biosystems
Grease Feast
Alkaline Aqueous
5
130
United Laboratories
United 450 All Clear
Alkaline Aqueous
5
130
United Laboratories
United 2002 Harvest Gold
Solvent
100
72
Success Rating:
A follow up test, usually based on company input.
Conclusion:
Two of the three products had excellent removal of all the contaminants. Ensovle Grease Feast and United 450 All Clear removed nearly 90% for the oil, grease and lubricant. Even though the third cleaning product had low efficiencies, the results show that the cleaning mechanism may be different than the two aqueous products and could require slightly longer cleaning times.
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