Current Test-by-Test Standard Deviations

                                       Within                    Total
                                          Lab    Overall      Individual
Elastomer               Parameter         STD      STD      Determinations

NITRILE                 Volume           0.88       0.90         12122    
NITRILE                 Hardness         1.43       1.49         12070    
NITRILE                 Tension         14.63      14.86         12104    
NITRILE                 Elongation      10.32      10.42         12113