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Trial Number 4

Client Number 361

Project Number 1

Trial Purpose:

To evaluate supplied product for grease removal from floor surfaces following CSPA DCC 17

Date Run:

03/10/2014

Experiment Procedure:

Floor cleaning for the supplied product was tested using the CSPA DCC 17 - Greasy Soil Test Method for Evaluating Spray-and-Wipe Cleaners Used On Hard, Non-Glossy Surfaces standard. A few minor deviations from the standard were incorporated into the test conducted.

The Greasy Soil Test Method is a standard method that evaluates the cleaning performance of products intended for use on washable walls or other hard, non-glossy surfaces. This method provides instructions for soil application, cleaning and evaluation of spray-and-wipe cleaners under controlled cleaning conditions. This method can be used to assess product performance for cleaning a fabricated greasy soil blend applied to painted wallboard tiles. It is not inclusive of all soil or substrates typically encountered by a consumer while using these products.

Latex painted vinyl composite tiles were substituted for masonite wallboard tiles. These tiles were soiled with a mixture of melted, oily soils containing a small amount of carbon black. The tiles were dried overnight at room temperature. A measured amount of spray-and-wipe cleaner is applied to a reinforced paper towel was used in place of the sponge. The soaked towels were used to scrub a portion of the soiled substrate using a straight-line
washability apparatus. The tile was rinsed after cleaning to remove loosened soil. Separate soiled coupons were cleaned with the other products being evaluated instead of using the same soiled coupon as another product.
This was done to eliminate any possible cross contamination of the cleaning process. Three coupons were cleaned by each cleaning product being evaluated. Cleaning performance was taken as a linear function of
reflectance value, and visually evaluated by a panel of judges.

Coupon preparation:
Two coats of white paint solution were applied to the slightly rough side of the tiles, waiting 15 minutes between each coat. Coupons were allowed to dry overnight at room temperature, and then cure them at 50°C and 50% humidity for 24 hours. Five reflectance readings were taken for each of three separate tiles to obtain a baseline value. A second set of VCT tiles were coated with a clear floor finish, giving the coupons a glossy finish.

Soil Preparation
A mixture of three cooking oils/greases was made. A melt blend of 33% vegetable shortening, 33% lard, 33% vegetable oil and 1% carbon lampblack was made up fresh for the testing. Care was taken in the application of the soil onto the coupons so that light and heavy areas were avoided. Allow the soiled tiles to dry for 24 hours at room temperature. Five reflectance readings were made for each of three soiled tiles to obtain a soiled
reference value.

Cleaning Test
Place a soiled tile in the tray of the abrasion tester such that the direction of the soiling is perpendicular to the direction of the sponge. In place of using a sponge and pouring solution into dish for application, products were applied to the coated surfaces using one spray from manual spray pump and one spray onto the reinforced Wypal X60 paper towel attached to the cleaning instrument. The cleaning was performed using Gardner Straightline washability unit and conducted for the prescribed 5 cycles (10 strokes). Following the initial cycle, there was no discernable difference between the products and an additional 15 cycles were run. The coupons were immediately rinse with tap water only the surface which was scrubbed. 

Cleaning data can be calculated as percent detergency in the following equation:
% DET = R(cleaned) - R(soiled) / R(unsoiled) - R(soiled) X 100
SLW unit for 20 cycles (~30 seconds). Efficiency was calculated for each tile.

ChemistriesEvaluated: Chrisal 1:64; Night Owl 1:64. All dilutions made from cold, unheated water.

Trial Results:

Substrate Cleaner Initial L Dirty L Final L % DET Average % DET
Painted VCT Chrisal 1:64 91.03 31.75 55.36 39.83% 39.38%
    93.06 24.75 57.18 47.47%  
    93.12 24.73 61.57 53.87%  
    92.37 30.25 47.41 27.62%  
    93.35 29.19 51.55 34.85%  
    92.80 31.28 51.34 32.61%  
  Painted VCT Night Owl 1:64 93.41 29.44 48.46 29.73% 33.53%
    93.19 28.41 49.37 32.36%  
    93.46 29.47 51.61 34.60%  
    92.15 26.29 44.72 27.98%  
    93.42 25.18 47.57 32.81%  
    93.40 30.15 57.78 43.68%  
  Regular VCT Chrisal 1:64 83.33 25.57 52.69 46.95% 51.75%
    83.45 25.29 56.56 53.77%  
    79.09 26.10 54.99 54.52%  
  Regular VCT Night Owl 1:64 83.02 25.23 52.84 47.78% 49.73%
    79.94 24.98 50.97 47.29%  
    80.40 24.97 54.97 54.12%  

Success Rating:

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

Conclusion:

Based on the gloss readings, the 1:64Dilution of Chrisal is more effective than 1:64 Night Owl for both the painted VCT and regular VCT tiles.

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