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

Surface Solutions Laboratory

Trial Report

Trial Number 7

(Client Number 27, Project Number 2)

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

Date Run: 11/04/09

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 Texaca Rando HD22-88 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 worked well on the oil, removing more than 85%.  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%                        
        0.0509        0.0095        81.34
        0.0307        0.0021        93.16
        0.0373        0.0024        93.57
SC Aircraft metal cleaner 5%                        
        0.0255        0.0092        63.92
        0.0276        0.0013        95.29
        0.0126        0.0008        93.65
Solsafe 245 100%                        
        0.1292        0.0047        96.36
        0.0506        0.0065        87.15
        0.0438        0.0021        95.21
Detergent 8 5%                        
        0.0403        0.0050        87.59
        0.0539        0.0027        94.99
        0.0217        0.0021        90.32
        0.0537        0.0060        88.83
        0.0559        0.0039        93.02
        0.0322        0.0064        80.12

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 the next supplied contaminant under the same conditions.