| Standard
Grades |
| Most
natural rubber produced today conforms to the TSR (Technically Specified
Rubber) |
| scheme
developed over the last 20 years or so. This scheme requires standardized
tests |
| to be performed on each grade
of rubber as well as a standardized packing of either |
| 33 1/3 Kilo or 35 kilo bales wrapped in
thin, dispersible polyethylene or thick, |
| strippable
polyethylene. TSR rubber is usually packed with 36 bales on a crated or |
| shrink-wrapped standard size
pallet. Crate size is 1200 or 1260 Kilos. |
|
| The TSR scheme consists of the
following grades: |
|
| TSR CV: Constant viscosity
from latex |
| TSR L: Light coloured from
latex |
| TSR 5: Equivalent to 1 RSS
from sheets |
| TSR 10: Field grade material |
| TSR 20: Base field grade
material |
|
| Individual
rubber producing countries are in charge of setting the acceptable
limits |
| for
each grade of rubber they produce. The four main countries producing rubber
have |
| their own schemes patterned
after the TSR scheme: |
|
| SIR: Standard Indonesian
Rubber |
| SMR: Standard Malaysian Rubber |
| STR: Standard Thai Rubber |
| SVR: Standard Vietnamese
Rubber |
|
|
| Natural rubber |
|
| RSS#1
Malaysia 111.11 |
|
| RSS#3
Malaysia 111.11 |
|
| SMR-L
Malaysia 33.33 |
|
| SMR-10
Malaysia 33.33 |
|
| SMR-20
Malaysia 33.33 |
|
| SUR
#3L Malaysia 33.33 |
|
| ADS-XL Malaysia 33.33 |
|
| RSS#1
Malaysia 111.11 |
|
| RSS#3
Malaysia 111.11 |
|
| SMR-L
Malaysia 33.33 |
|
| SMR-10
Malaysia 33.33 |
|
| SMR-20
Malaysia 33.33 |
|
| SUR
#3L Malaysia 33.33 |
|
| ADS-XL Malaysia 33.33 |
