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




Surface Solutions Laboratory

Trial Report



Trial Number 22

(Client Number 244, Project Number 1)

Trial Purpose: To evaluate gloss for sealer and coating together.

Date Run: 09/13/05

Experiment Procedure:
To determine the amount of ?shine? the floor finishes created, baseline gloss readings were made on uncoated wood coupons. A SPER Scientific Light Meter 840021 measuring Foot Candles from the surface to represent gloss readings. Three readings were made for each coupon, in the middle, and at both ends. The three coupons that were to be coated with the same finish were then averaged and recorded as the product average baseline. The same procedure was followed to determine the finished coupon average after the three coats were applied and allowed to cure for 24 hours. The finished coupon average and the baseline average were then compared to determine the increase or decrease in gloss. Results for the Gloss readings were compared for the various floor finishes.

Trial Results
Initial       Light Meter Reading                    
Coupon ID     Middle     End 1      End 2     Ave Light     Overall Ave.
A             8.62       8.22       8.51       8.45           7.86
b             8.43       7.91       8.43       8.26     
c             7.84       8.12       7.87       7.94     
d             7.69       7.44       7.38       7.50     
e             7.76       7.34       8.06       7.72     
f             7.81       7.62       7.59       7.67     
g             7.67       7.24       7.60       7.50     
h             8.22       7.56       7.81       7.86     
I             7.84       7.80       7.75       7.80     

Final                         
Coupon ID     Middle     End 1     End 2     Ave Light     Overall Ave.
A             8.46       8.63       8.70       8.60           9.03
b             9.59       8.81       8.86       9.09     
c             9.30       9.02       9.34       9.22     
d             9.61       9.21       8.53       9.12     
e             9.25       9.01       9.22       9.16     
f             8.90       8.84       8.57       8.77     
g             8.38       8.30       9.34       8.67     
h             9.56       9.43       9.37       9.45     
I             9.21       9.30       9.08       9.20     

Increase in Light Readings               
Initial     Final     Final - Initial
 7.86       9.03           1.17

Comparison to individual components
Floor Finishes                                        Initial   Final    Delta
Pro Finisher Water Based Polyurethane for floors       6.42     7.03     0.61
Pro Finisher Water Based Sanding Sealer                6.18     6.74     0.56
Pro Finisher Water Based Sanding Sealer & Polyurethane 7.86     9.03     1.17


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

Conclusion
The light readings increased more when the two products were used in conjunction with each other.