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RUBBER REPORTING INDICATORS RSS1 BY STANDARDTCVN: 3769: 2004RIBBED SMOKED SHEET CLASSIFICATION (Based on The Green Book, 1969) GradeRubber MoldWrapping moldOpaque spotsOver smoked spotsOxidized spotsBurnt sheetRSS1Very slightVery slightNoNoNoNoRSS2SlightSlightNoNoNoNoRSS3SlightSlightSlightNoNoNoRSS4SlightSlightSlightSlightNoNoRSS5SlightSlightSlightSlightN/ANoGradeBrief Description of RSS Grades (based on The Green Book-1969)RSS1Clean, dry, strong, small-scattered pinhead bubbles, free from blemishes, sand, foreign matter, under-curedRSS2Dry mould no more than 5%, clean, dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter, under-cured.RSS3Dry mould no more than 10%, clean , dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter, under-cured.RSS4Dry mould no more than 20%, clean , dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter.RSS5Dry mould no more than 30%, clean , dry, strong, large bark particles bubbles,small blisters, blemishes, free from sand, foreign matter.

RUBBER REPORTING INDICATORS RSS1 BY STANDARDTCVN: 3769: 2004RIBBED SMOKED SHEET CLASSIFICATION (Based on The Green Book, 1969)GradeRubber MoldWrapping moldOpaque spotsOver smoked spotsOxidized spotsBurnt sheetRSS1Very slightVery slightNoNoNoNoRSS2SlightSlightNoNoNoNoRSS3SlightSlightSlightNoNoNoRSS4SlightSlightSlightSlightNoNoRSS5SlightSlightSlightSlightN/ANoGradeBrief Description of RSS Grades (based on The Green Book-1969)RSS1Clean, dry, strong, small-scattered pinhead bubbles, free from blemishes, sand, foreign matter, under-curedRSS2Dry mould no more than 5%, clean, dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter, under-cured.RSS3Dry mould no more than 10%, clean , dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter, under-cured.RSS4Dry mould no more than 20%, clean , dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter.RSS5Dry mould no more than 30%, clean , dry, strong, large bark particles bubbles,small blisters, blemishes, free from sand, foreign matter.

LATEX VIET NAM RUBBER STANDARDS LATEX CONCENTRATETCVN 6314:1997PROPERTIESHALA- Total solids content (TSC), % wt, min61.561.5- Dry Rubber Content (DRC), %wt, min60.060.0- Non - rubber content, % wt, max (TSC mimus DRC)2.02.0- Total Alkalinity (Nh3), % wt,                     min                     max0.600.29- Mechanical Stability Time (MST) sec, min 650 650- Coagulum content, % wt of TSC, max0.050.05- Copper content, mg/kg, % of TSC, max88- Manganese content, mg/kg, % of TSC, max 8  8 - Sludge content, mg/kg, % wt of TSC, max 0.10 0.10- Volatile fatty acid (VFA), max0.200.20- KOH number, max1.01.0

 SVR 20 TECHNICAL SPECIFICATIONS OF SVR UNDER TCVN: 3769 : 2004PROPERTIESSVR 20      - Dirt Content. % wt, max0.16      - Ash Content, % wt, max 0.80      - Nitrogen Content, % wt, max 0.60 0.60      - Volatile Matter, % wt, max 0.80      - Initial Plasticity (Po), min 30      - Plasticity Retention Index (PRI), min 40      - Colour Index, max      - Mooney Viscosity ML (1’ + 4’) 100ºC      - Cure

SVRCV 60 TECHNICAL SPECIFICATIONS OF SVR UNDER TCVN: 3769 : 2004PROPERTIESSVRV 60      - Dirt Content. % wt, max0.02      - Ash Content, % wt, max 0.40      - Nitrogen Content, % wt, max 0.60 0.60      - Volatile Matter, % wt, max 0.80      - Initial Plasticity (Po), min      - Plasticity Retention Index (PRI), min 60      - Colour Index, max      - Mooney Viscosity ML (1’ + 4’) 100ºC 60+5      - CureR

SVRCV 50 TECHNICAL SPECIFICATIONS OF SVR UNDER TCVN: 3769 : 2004PROPERTIESSVRCV 50      - Dirt Content, % wt, max0.02      - Ash Content, % wt, max 0.40      - Nitrogen Content, % wt, max 0.60 0.60      - Volatile Matter, % wt, max 0.80      - Initial Plasticity (Po), min      - Plasticity Retention Index (PRI), min 60      - Colour Index, max      - Mooney Viscosity ML (1’ + 4’) 100ºC 50+5      - CureR

SVR 10 TECHNICAL SPECIFICATIONS OF SVR UNDER TCVN: 3769 : 2004PROPERTIESSVR  10      - Dirt Content, % wt, max0.08      - Ash Content, % wt, max 0.60      - Nitrogen Content, % wt, max 0.60 0.60      - Volatile Matter, % wt, max 0.80      - Initial Plasticity (Po), min 30      - Plasticity Retention Index (PRI), min 50      - Colour Index, max      - Mooney Viscosity ML (1’ + 4’) 100ºC      - Cure

SVR 3L TECHNICAL SPECIFICATIONS OF SVR UNDER TCVN: 3769 : 2004PROPERTIESSVR 3L      - Dirt Content, % wt, max0.03      - Ash Content, % wt, max 0.50      - Nitrogen Content, % wt, max 0.60 0.60      - Volatile Matter, % wt, max 0.80      - Initial Plasticity (Po), min 35      - Plasticity Retention Index (PRI), min 60      - Colour Index, max 6      - Mooney Viscosity ML (1’ + 4’) 100ºC      - CureR

SVR L TECHNICAL SPECIFICATIONS OF SVR UNDER TCVN: 3769 : 2004PROPERTIESSVR L      - Dirt Content, % wt, max0.02      - Ash Content, % wt, max 0.40      - Nitrogen Content, % wt, max 0.60 0.60      - Volatile Matter, % wt, max 0.80      - Initial Plasticity (Po), min 35      - Plasticity Retention Index (PRI), min 60      - Colour Index, max 4      - Mooney Viscosity ML (1’ + 4’) 100ºC      - CureR