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

Surface Solutions Laboratory

Trial Report

Trial Number 2

(Client Number 27, Project Number 2)

Trial Purpose: To evaluate top products from previous trial on second supplied contaminant.

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 24 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 85% 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%                        
        0.0603        0.0035        94.20
        0.0573        0.0094        83.60
        0.0460        0.0067        85.43
SC Aircraft metal cleaner 5%                        
        0.0308        0.0021        93.18
        0.0317        0.0017        94.64
        0.0295        0.0023        92.20
Solsafe 245 100%                        
        0.0604        0.0023        96.19
        0.0343        0.0017        95.04
        0.0253        0.0000       100.00
Detergent 8 5%                        
        0.0331        0.0014        95.77
        0.0277        0.0015        94.58
        0.0259        0.0015        94.21
        0.0433        0.0018        95.84
        0.0378        0.0034        91.01
        0.0315        0.0026        91.75

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

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