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Trial Number 4

Trial Purpose:

To evaluate client requested cleaners based on Vendor supplied information.

Date Run:


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 room temperature 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: Aluminum Coupons (202-2024 T-3), Nickel/Copper Coupons (202-715), Stainless Steel Coupons (202-316B-80)
CONTAMINANTS: Table 1 lists the contaminants and their CAS#s
Table 1. Contaminants Used

Aluminum 202-2024 T-3
  202-7075 T-6
Stainless Steel 202-410 B-85
Brass 202-260
Cold Rolled Steel 202-1020

CONTAMINATING PROCESS USED: All contaminants were applied to coupons using handheld swabs.

Trial Results:

The all-purpose cleaner was very successful in removing the grease and oil.  The cleaner was only moderately capable of cleaning the lubricant and unsuccessful in removing the ink.  The industrial degreaser was only effective in removing the grease.  This cleaner was only partially able to remove the lubricant and oil and had no success in cleaning the ink.  Table 2 lists the cleaner and the calculated efficiencies for each contaminant.

Table 2.  Cleaning Product Results by Substrate and Contaminant

Hoofmark All Purpose Cleaner      
Substrate Substrate ID # Contaminant     Efficiency
Aluminum 202-2024 T-3 grease 100
Aluminum 202-2024 T-3 lubricant 75
Nickel/Copper 202-715 ink 2
Stainless Steel 202-316B-80 oil 93
Hoofmark Industrial Degreaser      
Substrate Substrate ID # Contaminant     Efficiency
Aluminum 202-2024 T-3 grease 91
Aluminum 202-2024 T-3 lubricant 68
Nickel/Copper 202-715 ink 1
Stainless Steel 202-316B-80 oil 61

Success Rating:

A follow up test, usually based on company input.


Partial success was obtained for each of the two cleaners evaluated.  Both were effective in removing the grease.  The all-purpose cleaner was also successful in removing the oil.  All other contaminants were less than 75% cleaned from the substrates.

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