Current Test-by-Test Standard Deviations

                                       Within                    Total
                                          Lab    Overall      Individual
Elastomer               Parameter         STD      STD      Determinations

POLYACRYLATE            Volume           0.79       0.81         12412    
POLYACRYLATE            Hardness         1.59       1.70         12362    
POLYACRYLATE            Tension         10.22      10.25         12328    
POLYACRYLATE            Elongation      12.91      12.99         12378