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TSR 5
Natural Rubber Comparison Chart

 
Parameter

Unit

SIR
5

SMR
5*

SMR
GP

STR
5

SVR
5

Dirt (max)

% wt

0.05
0.05
0.08
0.04
0.05

Ash (max)

% wt

0.50
0.60
0.75
0.60
0.50

Nitrogen (max)

% wt

0.60
0.60
0.60
0.60
0.60

Volatile Matter (max)

% wt

0.80
0.80
0.80
0.80
0.80
Po (min)  
30
30
NA
NA
30
PRI index (min)  
70
60
50
60
60
Mooney Viscosity
(ML, 1+4, 100C)
 
NA
NA
65 +7/-5
NA
NA

*Two sub-grades of SMR 5 are SMR 5RSS (prepared by direct baling of ribbed smoked sheet) and SMR 5ADS (of air-dried sheet).

These figures are limits, not typical values. Typical values will vary by producer.

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