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




Surface Solutions Laboratory

Trial Report



Trial Number 6

(Client Number 275, Project Number 1)

Trial Purpose: To evaluate supplied product for all purpose cleaning at two concentrations using manual cleaning.

Date Run: 07/03/07

Experiment Procedure:
The supplied cleaning product was used at the delivered concentrations (0.78% and 0.39%). Six preweighed ceramic, six plastic and six steel coupons were coated with Hucker's Soil Formulation (Jif Creamy Peanut Butter 9.2%, Salted Butter 9.2%, Arrowhead Mills stone ground wheat flour 9.2%, Egg Yolk 9.2%, Evaporated milk 13.8%, Distilled water 45.8%, Printer's ink with boiled linseed oil 0.9%, Shaws saline solution 2.7%) using a hand held swab and allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.

Three coupons were placed into a Gardner Straight Line Washability unit. AA Wypall X60 reinforced wipe was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (~33 seconds). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded and efficiencies were calculated and recorded.

Trial Results
The table lists the amount of soil added and the amount remaining after cleaning and the product efficiency for each coupon cleaned.

Cleaner       Initial wt   Final wt    % Removed
1:128 Steel    0.0606       0.0050       91.75
               0.1925       0.0161       91.64
               0.0876       0.0131       85.05
1:256 Steel    0.1592       0.0313       80.34
               0.1934       0.0117       93.95
               0.0777       0.0055       92.92
1:128 Ceramic  0.9172       0.0576       93.72
               0.4495       0.0422       90.61
               0.3588       0.0232       93.53
1:256 Ceramic  0.7129       0.0470       93.41
               0.2151       0.0864       59.83
               0.3346       0.1555       53.53
1:128 Plastic  0.1701       0.0080       95.30
               0.0869       0.0034       96.09
               0.0830       0.0031       96.27
1:256 Plastic  0.1244       0.0098       92.12
               0.1208       0.0066       94.54
               0.1597       0.0270       83.09

The 1:128 dilution performed at or better than the higher concentration tested previously in the lab for all the substrates (~6% increase in average
efficiency).


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

Conclusion
The product at the higher dilution had an overall average efficiency over 85% and would be considered effective according to the Mass EPP protocol for an all purpose cleaner.