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




Surface Solutions Laboratory

Trial Report



Trial Number 489

(Client Number 153, Project Number 1)

Trial Purpose: DIY test for all purpose cleaning with water rinsing

Date Run: 05/06/09

Experiment Procedure:
A “Do-it-yourself" home formulation was evaluated for performance on several substrates and a soil for all purpose cleaning. Rinsing was added to improve residue removal.

Cleaning : Spray cleaner on the coupons
30 seconds of manual wiping using a Garnder Straight-line washability unit at room temperature. After cleaning, coupons were sprayed with water and wiped dry. Parts were analyzed using visual and gravimetric techniques.

Contaminant SSL Soil 3 – Hucker’s Soil
Substrate 2"x 4"x 0.06" for ceramic, painted steel, plastic and stainless steel.


All Purpose Formulations
Home Formulation 7 - 2 tbsp borax, ¼ cup lemon juice, 2 cups hot water - combine in spray bottle

Trial Results
Cleaner Initial wt   Final wt     % Removed
Ceramic - 20 cycles                        
        0.2026        0.0426        78.97
        0.2532        0.0498        80.33
        0.1901        0.0513        73.01
Painted steel - 60 cycles                        
        0.1851        0.0037        98.00
        0.2104        0.0096        95.44
        0.2569        0.0072        97.20
Plastic - 20 cycles                        
        0.0980        0.0063        93.57
        0.1022        0.0021        97.95
        0.1142        0.0025        97.81
Stainless steel - 20 cycles                        
        0.1235        0.0122        90.12
        0.1104        0.0029        97.37
        0.1787        0.0063        96.47
Ceramic - rinse                        
        0.2026        0.0279        86.23
        0.2532        0.0412        83.73
        0.1901        0.0280        85.27
Painted steel - rinse                        
        0.1851       -0.0043       102.32
        0.2104        0.0039        98.15
        0.2569       -0.0034       101.32


Success Rating
Lab evaluation based on vendor data.

Conclusion
The DIY formulation #7 was previously ineffective on the Hucker’s soil when used without a rinse. Each of the substrates cleaned and rinsed during this trial were cleaned above 85% with only one surface needing longer cleaning time. The plastic surface required 60 cycles of cleaning as compared to 20 cycles for the other surfaces. In addition, the plastic coupon was improved with a longer rinse process. The ceramic surfaces also needed additional rinsing time to achieve the 85% effective level.