SPECIFICATION OF RUBBER SMOKED SHEET (RSS)

     Quality of Rubber Smoked Sheets RSS-1 RSS-2 RSS-3 RSS-4 and RSS-5 shall refer to International Grade Descriptions contained in a publication entitle "International Standard of Quality and Packing for Natural Rubber Grade (Green Book).

SPECIFICATION OF STANDARD THAI RUBBER (STR-5L and STR-20)

PROPERTY
STR-5L
 STR-10
STR-20
DIRT (retained on 44u aperture) % wt
0.04 max
 0.08 max
0.16 max
ASH % wt
0.40 max
  0.60 max
0.80 max
NITROGEN % wt
0.60 max
 0.60 max
0.60 max
VOLATILE MATTER % wt
0.80 max
 0.80 max
0.80 max
INITIAL WALLACE PLASTICITY (Po)
35.00 min
 30.00 min
30.00 min
COLOUR (LOVIBOND SCALE)
6.00 max
 -
-
P.R.I. (Plasticity Retention Index)
60.00 min
 50.00 min
40.00 min
MOONEY VISCOSITY
-
 -
-


SPECIFICATION OF LATEX CONCENTRATE 60% DRY CONTENT
I.S.O. 2004-1979 (E)

PROPERTY (I.S.O. LIMITS)
HA 60%
LA 60%
T.S.C. (Total Solid Content % by weight)
61.50 Min
61.50 min
D.R.C. (Dry Rubber Content % by weight)
60.00 Min
60.00 min
NON-RUBBER SOLIDS (%)
2.00 Max
2.00 max
AMMONIA CONTENT (% on total weight)
0.60 Min
0.29 max
AMMONIA CONTENT (% on water phase)
-
-
PH VALUE
-
-
KOH NUMBER
1.00 Max
1.00 max
V.F.A. (Volatile Fatty Acid Number)
0.20 Max
0.20 Min
M.S.T. (Mechanical Stability @ 55% T.S.C.)
650 sec. Min
650 sec. min
SPECIFIC GRAVITY 25°C
-
-
MAGNESIUM CONTENT (PPM on solids)
30+/-10
30+/-10