To evaluate client requested cleaners based on Vendor supplied information.
Date Run:
01/04/2000
Experiment Procedure:
The cleaners used were diluted to 5% using DI water in 600 ml beakers. Cleaning of the coupons was performed using stir-bar agitation at 130 F 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:
The Mirachem 500 that is kept in-stock at the laboratory was the most effective in removing all three contaminants tested. The Ready-to-Use Mirachem 500 and the Solution 2000 did not perform as well at removing the lubricant. The RTU Mirachem 500 may have already been diluted before testing, thus showing lower results. The lubricant on the coupons cleaned by Solution 2000 was a little thicker due to sitting on the benchtop overnight. The Solution 2000 might have done better using new lubricant. Table 4 lists the cleaning results obtained for the three cleaning solutions and the three contaminants.
Table 4. Cleaning Results
Company Name
Product Name
Contaminant
CAS #
Efficiency
Ensolve Biosystems
Grease Feast
oil
64741-89-5
94
grease
64742-47-8
100
lubricant
64742-47-8
88
United Laboratories
United 2002 Harvest Gold
oil
64741-89-5
66
oil
64742-53-6
66
oil
64741-44-2
66
lubricant
8052-42-4
-12
lubricant
64742-57-0
-12
lubricant
64742-62-7
-12
grease
64742-47-8
65
United Laboratories
United 450 All Clear
oil
64741-89-5
95
oil
64742-53-6
95
oil
64741-44-2
95
lubricant
64742-57-0
91
lubricant
8052-42-4
91
lubricant
64742-62-7
91
grease
64742-47-8
100
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The in-stock Mirachem 500 was the superior product according to the results obtained, because it worked on all three contaminants. The 99% removal of oil and 94% removal of grease indicate the Ready-to-Use Mirachem 500 might be the better product if it is used straight from the spray bottle (to be conducted at a later date). Higher concentrations of Solution 2000 may produce better results.
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