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

Surface Solutions Laboratory

Trial Report

Trial Number 1

(Client Number 275, Project Number 2)

Trial Purpose: To evaluate supplied products for Bathroom Soil SSL-1 removal from various surfaces.

Date Run: 01/04/16

Experiment Procedure:
The two cleaning products were used at the requested dilutions, 1:128 for PC-120 and RTU for Lav Safe, both at room temperature (68?F) during the test. Nine pre-weighed coupons per cleaner (three Ceramic, three Plastic and three Stainless steel) were coated with one gram of Bathroom Soil SSL-1 at room temperature using a hand held swab. The contaminated coupons were air dried for 24 hours at room temperature and weighed again to determine the amount of soil added the next day.

The three coupons of each substrate were placed in the SLW equipment and a KC Wypal reinforced paper towel was attached to the cleaning sled and soaked with two sprays of cleaning solution. Each coupon was sprayed twice with the same cleaning solution. The cleaning unit was run for 20 cycles (30 sec). At the end of the cleaning cycle, the coupons were wiped once with a dry paper towel. Coupons dried overnight and final weights were recorded. Efficiencies were calculated and recorded.

Trial Results
After 30 seconds of testing on the SLW equipment, PC 120 was less effective at removing soil from Polycarbonate Substrates. Lav Safe was less
effective at removing soil from Stainless Steel. PC 120 had very close removal rates for all of the substrates while Lav Safe was very effective on
Polycarbonate substrates. Overall, Lav Safe was more effective as a cleaner than PC 120.

Cleaner     Substrates        Initial       Final      % Removed   % Substrate Ave % Overall                 
PC 120      Ceramic           0.3756        0.1079        71.27        83.09        84.21
                              0.4052        0.0506        87.51                
                              0.3129        0.0297        90.51                
        Polycarbonate         0.3052        0.0848        72.21        82.95        
                              0.3395        0.0429        87.36                
                              0.3814        0.0408        89.30                
        Stainless Steel       0.2792        0.1224        99.52        86.58        
                              0.4407        0.0356        86.67                
                              0.2916        0.1817        73.56                
Lav Safe Ceramic              0.3419        0.0122        96.43        87.08        85.54
                              0.3021        0.0308        89.40                
                              0.2934        0.0733        75.02                
        Polycarbonate         0.3354        0.0115        96.57        96.36        
                              0.3776        0.0110        98.09                
                              0.3386        0.0155        95.42                
        Stainless Steel       0.3487        0.0907        59.80        73.20        
                              0.3077        0.0943        82.63                
                              0.3334        0.0221        77.18

Success Rating
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

At the end of the cycle (30 sec), the PC-120 could only effectively remove 86.58% of the Bathroom Soil SSL-1from Stainless Steel. Lav Safe was able to effectively remove 87.08% of Bathroom Soil SSL-1 from Ceramic and 96.36% from Polycarbonate.