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Toxics Use Reduction Institute · Surface Solutions Laboratory
Toxics Use Reduction Institute

Surface Solutions Laboratory

Trial Report

Trial Number 8

(Client Number 27, Project Number 2)

Trial Purpose: To evaluate top five products on eight supplied contaminant using manual cleaning

Date Run: 11/12/09

Experiment Procedure:
Five products from the previous trials were selected based on performance. All were used at room temperature. Two alkaline aqueous cleaners were diluted to 5% using DI water in 300 ml beakers. Three cleaners were used at full strength. Fifteen preweighed aluminum coupons were coated with Lennox synthetic lubricant using a hand held swab. The contaminated coupons were weighed again to determine the amount of soil added.

Each cleaner tested with three coupons. Three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly Clark Reinforced paper towel was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 3 times with the same cleaning solution. First, Coupon was cleaned for 15 cycles two times; after coupon was cleaned for 15 cycles, experimenter changed the paper towel and soaked with 5 spray of same cleaning solution. At the end of the cleaning, coupons were dried at room temperature naturally. Final weights were recorded and efficiencies were calculated and recorded.

Trial Results
All five worked well on the oil, removing more than 95%.  The table lists the amount of oil added, the amount remaining and the efficiency for each
coupon cleaned.

Cleaner Initial wt   Final wt     % Removed
Shopmater RC 100%                        
        0.0713        0.0007        99.02
        0.0750        0.0005        99.33
        0.0800        0.0011        98.62
SC Aircraft metal cleaner 5%                        
        0.0978        0.0039        96.01
        0.0859        0.0008        99.07
        0.0650        0.0000       100.00
Solsafe 245 100%                        
        0.1140        0.0052        95.44
        0.0783        0.0033        95.79
        0.0786        0.0011        98.60
Detergent 8 5%                        
        0.0602        0.0005        99.17
        0.0558        0.0005        99.10
        0.0572       -0.0017       102.97
        0.0547        0.0003        99.45
        0.0709        0.0088        87.59
        0.0595       -0.0018       103.03

Success Rating
A follow up test, usually based on company input.

Based on past performance on the previous contaminants, all five products will be tested on supplied parts under the same conditions.