Table 2 – TYPICAL PROPERTITIES OF TSR

Properties

Gradea

LoV

CV

L

WF

S

10

20

10CV

20 CV

Test Method

Colour Coding, Marker

Green

Green

Green

Green

Green

Brown

Red

Brown

Red

-

Dirt Content, %wt, Max

0.05

0.05

0.05

0.05

0.05

0.10

0.20

0.10

0.20

ISO 249

Ash Content, %wt, Max

0.5

0.5

0.5

0.5

0.6

0.75

1.0

0.75

1.0

ISO 247

Nitrogen Content, % wt, Max

0.3

0.6

0.6

0.6


0.6

0.6

0.6

0.6

0.6

ISO 1656

Volatile Matter % wt, Max

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

ISO 248-1

Initial Wallace Plasticity, Po, Min

N/A

N/A

30

30

30

30

30

N/A

N/A

ISO 2007

Plasticity Retention Index, PRI, Min

N/A

60

60

60

60

50

40

50

40

ISO 2930

Lovibond Colour Index, Max

N/A

N/A

6

N/A

N/A

N/A

N/A

N/A

N/A

ISO 4660

Lovibond Colour Index, Max

45 ± 65 b

55 ± 65 b

N/A

N/A

N/A

N/A

N/A

60 – 72c

60 – 72c

ISO 289-1

Gel Content, % wt,
Max

4.0d

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

ISO 17278

a.) The raw material is given in Table A.
b.) Other viscosity levels might be agreed between the interested parties.
c.) The viscosity of these grades is not specified as it can change with, for example, age and handling. However, the viscosity will typically be controlled at the producer’s end to a value of 60 – 72. Other viscosity levels might be agreed between the interested parties.
d.) Other gel content levels might be agreed between the interested parties.

Table A – Grade of TSR

GRADE

MATERIAL

Grades

Whole field latex

With controlled viscosity.

Light-coloured rubber, with a specified colour index.

With no specified viscosity or colour.

CV or LoV

 

L

WF

Sheet rubber or coagulated bulked field latex

Sheet rubber or coagulated bulked field latex

5 or 5S

Field-grade coagulum and/or sheet rubber.

With no specified viscosity

With controlled viscosity

10 or 20

10 CV or 20 CV

Reference: ISO 2000:2014, Rubber, raw natural – Guidelines for the specification of technically specified rubber (TSR).