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

Surface Solutions Laboratory

Trial Report

Trial Number 3

(Client Number 27, Project Number 2)

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

Date Run: 10/28/09

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 Mobile DTE 25 oil 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 products removed more than 90% of the oil from the aluminum coupons using simulated manual cleaning. The table lists the amount of soil
added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt   Final wt      % Removed
Shopmater RC 100%                        
        0.1004        0.0128        87.25
        0.2172        0.0142        93.46
        0.2324        0.0156        93.29
SC Aircraft metal cleaner 5%                        
        0.2534        0.0128        94.95
        0.2249        0.0114        94.93
        0.2654        0.0067        97.48
Solsafe 245 100%                        
        0.2059        0.0139        93.25
        0.2127        0.0135        93.65
        0.2246        0.0093        95.86
Detergent 8 5%                        
        0.1148        0.0091        92.07
        0.2454        0.0083        96.62
        0.2292        0.0103        95.51
        0.2715        0.0175        93.55
        0.2483        0.0103        95.85
        0.2557        0.0183        92.84

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

The same five products will be tested on the fourth supplied soil under the same conditions.