Standard Vietnamese Rubber (SVR) Specification Scheme

 
Parameter Unit SIR 3CV50 SIR 3CV60 SVR L SVR 3L SVR 5 SVR 10 SVR 20
Dirt (max) % wt 0.03 0.03 0.02 0.03 0.05 0.08 0.16
Ash (max) % wt 0.50 0.50 0.50 0.60 0.75 0.75 0.75
Nitrogen (max) % wt 0.60 0.60 0.60 0.60 0.60 0.60 0.60
Volatile Matter (max) % wt 0.80 0.80 0.80 0.80 0.80 0.80 0.80
Po (min) % wt NA NA 35 35 30 30 30
PRI index (min)   60 60 60 60 50 50 40
Mooney Viscosity
(1+4, 100°C)
ML 50 +/- 5 60+/- 5 NA NA NA NA NA
Colour Lovibond Scale
(individual values, max)
  NA NA NA 6.0 NA NA NA

*Not specification status, but are controlled at the producer end.
**Note: Mooney Viscosity limits at time of production. Values will drift higher over time.