SVR 5

CHEMICAL INDICATORS - MANAGEMENT OF RUBBER BY SVR 5 TCVN 3769:2004
A. Concentrations of contaminants retained on 45m sieve,% m / m, not more than: 0.05
Two. Ash,% m / m, not more than: 0.60
3. Nitrogen content,% m / m, not more than: 0.60
4. Concentration of volatiles,% m / m, not more than: 0.80
Five. Early plasticity (Po), not less than: 30
6. Maintain the viscosity index (PRI), not less than: 60