A Natural Rubber Testing and Certification Laboratory Authorised By MRB

STR SPECIFICATION SCHEME
STANDARD THAI RUBBER (STR)
SPECIIFICATION SCHEME
.
 Parameter
 Dirt (max) % wt
 Ash (max) % wt
 N2 (max) % wt
 VM (max) % wt
 P0 (min)
 PRI (min) %
 VR  
 Colour (max)
STR GRADE
STR
10
STR
20
STR
10CV
STR
20CV
STR
5CV
STR
XL
STR
5L
STR
5
0.08 0.16 0.08 0.16
0.60 0.80 0.60 0.80
0.60 0.60 0.60 0.60
0.80 0.80 0.80 0.80
30 30 NA NA
50 40 50 40
NA NA 55-67* 60-72*
NA NA NA NA
0.04
0.60
0.60
0.80
NA
60
55-67
NA
0.02 0.04
0.40 0.40
0.50 0.60
0.80 0.80
35 35
60 60
NA NA
4.0 6.0
0.04
0.60
0.60
0.80
30
60
NA
NA


* Not specification status, but are controlled at the producer end.



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