Rubber Research Institute of Sri Lanka

Ministry of Plantation



Raw Rubber and Chemical Analysis Department

This department provides analytical testing services as per industry demands and needs. Our scope is to empower raw rubber producers, rubber exporters, and small and medium-scale industrialists by providing internationally accepted testing facilities. The department offered testing, analytical and certification services on raw natural rubber and rubber chemicals to all sectors of the rubber industry.

Senior Research Officer

Mrs A P Attanayake, BSc (SL), PhD (SL)
anusha_rrisl[at]yahoo.com

Officer In-charge of the Raw Rubber & Chemical Analysis Department since 2005. Responsible for providing analytical services for the rubber industry. Obtained B.Sc Degree (Chemistry Special) from University of Ruhuna and received Ph.D. from the University of Sri Jayewardenapura in 2016. She has represented RRISL in several national and international conferences. Research projects on quality improvement and quality control of raw rubber are the main study areas. She is working as a technical expert under Sri Lanka Accreditation Board. Collaboratively worked with rubber industries and national Universities.

 

Current research interests

Raw Rubber & latex testing

 

  • Development of a analytical test method to determine the concentration of water-soluble bleaching agent
  • Development of a analytical test method to determine the Magnesium content of latex
  • Evaluation of the methods of preparation of dispersions by using pearl mill and the ball mill on the viscosity & DRC of centrifuged latex
  • Survey on variation of raw rubber properties of TSR manufacture in Sri Lanka
  • Factors affect on MST of NR latex with special emphasis to test conditions
  • Survey on variation of latex properties of centrifuged latex produced by different manufactures in Sri Lanka
  • Testing, grading and issuing shipping certificates for all TSR produced in the country.
  • Testing and issuing quality certificates for different grades of raw rubber produced in the country for local industries and for shippers.
  • Analysis of chemicals used for processing raw rubber in the rubber products manufacturing industry, for purity
  • Analysis of skim rubber adulteration in scrap grades of crepe rubber.
  • Recommendation of chemicals for the industry and analyzing them for percentage purity.
  • Testing of finished product such as :
    • Rubber gloves for sodium pentachlorophenate content and powder content.
    • Rubber content in vulcanized product.
    • Contamination of metal ions in dipped products.
  • Organizing inter laboratory cross check programs for raw rubber & latex testing laboratories & evaluation of results statistically.
  • Trouble Shooting Activities such as Calibration of latex tanks and Insrument Calibration
  • Analytical charges are as follows

 

REVISED TESTING CHARGES – July 2022

Testing charges have been revised with effect from 01.07.2022, as mentioned in the following table.

Note: Please note that Transport charges, Priority charges & Institutional charges have not been added to the toal charges. It should be added to the total charges whenever necessary. Figuers are in LKR.

 

PARAMETER (LATEX)

TEST METHODS

APPROVED SAMPLE FEE (RS.)

(LATEX ALL TESTS) (DRC, TSC, VFA, MST, ALKALINITY)

 

Rs. 7200.00

Dry Rubber Content (DRC)

ISO 126

Rs. 1200.00

Total Solid Content (TSC)

ISO 124

Rs. 1000.00

Volatile Fatty Acid No

ISO 506

Rs. 2500.00

Mechanical Stability Time

ISO 35

Rs. 1500.00

Alkalinity (on latex phase)

ISO 125

Rs. 1000.00

KOH No

ISO 127

Rs. 2000.00

Viscosity (Brookfield)

ISO 1652

Rs.   600.00

Mg Content

ISO 17403

Rs. 2000.00

pH

ISO 976

Rs.   900.00

Coagulum content

ISO 706

Rs. 2000.00

Chemical Stability

ISO 705

Rs. 2500.00

Phosphate Content

ISO 19043

Rs. 3500.00

 

PARAMETER (RAW RUBBER)

 

 

TEST METHODS

APPROVED SAMPLE FEE (RS.)

RAW RUBBER ALL TESTS (Dirt, Ash, VM, N2, Po, PRI, Colour)

 

Rs.  8700.00

Dirt Content

ISO 249

Rs. 2500.00

Ash Content

ISO 247

Rs. 1000.00

Volatile Matter Content

ISO 248

Rs.   500.00

Nitrogen Content

ISO 1656

Rs. 1500.00

Plasticity No

ISO 2007

Rs. 1000.00

Plasticity Retention Index

ISO 2930

Rs. 1500.00

Mooney Viscosity

ISO 289

Rs. 2500.00

Colour

ISO 4660

Rs.   700.00

Acetone Extraction

ISO 1407

Rs. 3500.00

Accelerated Storage Hardening Test (∆ P) 

RRIM

Rs. 1500.00

Gel Content

ISO 17278

Rs.  3500.00

 

PARAMETER (CHEMICALS)

TEST METHODS

APPROVED SAMPLE FEE (RS.)

Sodium sulphite

Titrimetric

Rs. 2000.00

Sodium bi-sulphite (S-meta bi-sulphite)

Titrimetric

Rs. 1000.00

Oxalic Acid

Titrimetric

Rs. 1500.00

Formic Acid

Titrimetric

Rs. 2000.00

Thickness (Polythene)   

-

Rs.   500.00

Ammonia strength

Titrimetric

Rs. 1500.00

Sulphuric strength

Titrimetric

Rs. 1500.00

 

  • Achieving quality infrastructure with modern equipments and obtaining laboratory accreditation.
  • Provide testing, inspections and certification service through conformity assessment.
  • Maintain in house instrument calibration procedures.
  • Increase demand for quality rubber products and raw materials.
  • Increase demand for accredited test reports and certificates.
  • Inspection of TSR factories for their quality of production process and certified as a registered TSR factory under RRISL.
  • Implementation of new test methods and method validation.
  • Identification of alternative chemicals to replace toxic and harmful chemicals.
  • Identify quality variations in rubber produced in nontraditional areas.
  • Recommendation on of new clones with special features targeting specific rubber product.

For Information

  • Call 1919

Contact Info

  • Rubber Research Institute of Sri Lanka.
  • Dartonfield, Agalawatta. 12200
  • 034 - 2247426, 034 - 2247383
  • 034 - 2248459, 034 - 2295540
  • 034 - 2247427
  • dirrri@sltnet.lk