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| STANDARD MALAYSIAN RUBBER SPECIFICATION SCHEME MANDATORY FROM 1 OCT 1991 |
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| Parameter |
SMR CV 60 |
SMR CV 5 |
SMR L |
SMR 5ª |
SMR GP |
SMR 10 CV |
SMR 10 |
SMR 20 CV |
SMR 20 |
| Latex |
Sheet Material |
Blend |
Field Grade Material |
Dirt retained on 44μ
Aperture (Max. % wt) |
0.02 |
0.02 |
0.02 |
0.05 |
0.08 |
0.08 |
0.08 |
0.16 |
0.16 |
Ash content (max, % wt)
|
0.50 |
0.50 |
0.50 |
0.60 |
0.75 |
0.75 |
0.75 |
1.00 |
1.00 |
| Nitrogen (max, % wt) |
0.60 |
0.60 |
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 |
0.80 |
0.80 |
| Wallace rapid plasticity (P0) (min) |
- |
- |
35 |
30 |
- |
- |
30 |
- |
30 |
| Plasticity retention index (PRI) (min, %)b |
60 |
60 |
60 |
60 |
50 |
50 |
50 |
40 |
40 |
Lovibond colour:
individual value (max) |
- |
- |
6.0 |
- |
- |
- |
- |
- |
- |
| range (max) |
- |
- |
2.0 |
- |
- |
- |
- |
- |
- |
Mooney viscosity
ML (1O + 4) 100O C
|
60(±5) |
50(±5) |
- |
- |
65 (+7, -5) |
- |
- |
- |
- |
| Curec |
R |
R |
R |
|
R |
R |
|
R |
|
| Colour code marker |
Black |
Black |
Light Green |
Light Green |
Blue |
Magenta |
Brown |
Yellow |
Red |
| Plastic wrap colour |
Transparent |
Transparent |
Transparent |
Transparent |
Transparent |
Transparent |
Transparent |
Transparent |
Transparent |
| Plastic strip colour |
Orange |
Orange |
Transparent |
Opaque White |
Opaque White |
Opaque White |
Opaque White |
Opaque White |
Opaque White |
|
| ªTwo sub-grades of SMR 5 are SMR 5 RSS and SMR 5 ADS which are prepared by direct baling of ribbed smoked sheet and air dried sheet (ADS) respectively. |
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| bSpecial producer limits and parameters are also imposed by the RRIM to provide additional safeguard. |
|
| cRheograph and cure test data (delta torque, optimum cure time and scorch) are provided. |
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