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| ________________________________________________________________________________________________________ |
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All Research and Extension departments of RRISL provide advice on all aspects of rubber agronomy and technology to stakeholders.In addition it also assists academic programs of universities and other higher education institutions by supervising students and human resource development programs of various other organizations by training teachers and stakeholders.When analytical services are provided, a nominal fee is charged to cover up basic costs. |
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Inspection of rubber nurseries: This service is rendered on request throughout the year by a team of officers in order to improve the quality of planting materials. Each nursery is inspected 2-4 rounds and reports are forwarded to respective nurseries. Towards the end of each season, a report is sent to the Rubber Development Department (RDD) stating the number of plants that can be used from each nursery. |
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Issue of authentic plants: A limited number of authentic plants of new clones are supplied to stake holders at a nominal rate (Rs. 60 per plant). |
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Advisory visits: Advisory visits are made on requests to investigate problems with regard to nurseries, growth during the mature phase, and yields in mature rubber. |
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| Soils and Plant Nutrition Department |
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Provide site-specific fertilizer recommendation for mature rubber. Leaf and soil samples are collected from estates only during June to October every year first come first serve basis (Rs.130/surveyed ha). |
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Select suitable lands for planting rubber to improve the productivity (Rs 600/surveyed ha). |
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Provide analytical reports on soil, plant, sludge, compost, water and fertilizer samples. The charges for fertilizer analyses are as follows and may subject to change. |
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Analysis |
Charges |
Estates/RDD/Research Institutes/Students |
Fertilizer Companies & Private Organizations |
Fertilizer / Compost / Sludge |
N P K and Mg |
Rs.675/sample |
Rs.1600/ sample |
N |
Rs.200/sample |
Rs.400/ sample |
P |
Rs.225/sample |
Rs.400/ sample |
K |
Rs.250/sample |
Rs.400/ sample |
Mg |
Rs.275/sample |
Rs.400/ sample |
Any Sample |
Organic C |
Rs.200/sample |
Rs.500/ sample |
pH |
Rs.75/sample |
Rs.150/ sample |
Particle size |
Rs.100/sample |
Rs.400/ sample |
Moisture |
Rs.50/sample |
Rs.150/ sample |
Ash content |
Rs.200/sample |
Rs.400/ sample |
CEC |
Rs.825/sample |
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Other analyses
Please contact: Head / Soils & Plant Nutrition Dept.
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| Biochemistry and Physiology Department |
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Following analytical services are provided
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Dry Rubber Content (DRC) of latex (Rs. 250/sample) |
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2-cloro ethyle phosphonic acid content of commercial ethephon products(Rs. 800/sample) |
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In addition, problems associated with low frequency tapping with stimulation will be provided free of charge |
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| Polymer Chemistry Department |
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Analytical services |
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Test |
Purpose |
Time required |
Charges/Rs |
Determination of Melting point |
Purity of chemicals |
One day |
500.00 |
Identification of polymers and polymer ratio in polymer blends by Fourier Transform Infrared spectrophotometer (FTIR) |
To identification of a suitable polymer for a product |
Seven days |
1500.00 |
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Testing facilities |
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Test |
Purpose |
Time required |
Charges/Rs |
Identification of polymer additives by FTIR |
Reconstruction of formulations |
2 weeks |
Depends on the compound |
Specific gravity |
Reconstruction of formulations |
One day |
250.00 |
Analysis of rubber chemicals by extraction method |
Reconstruction of formulations |
Seven days |
1000.00 |
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Technologies available |
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Preparation of dispersions and emulsions |
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Rubber wood treatment |
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Manufacture of Rubber seed oil and its uses |
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Manufacture of adhesives out of NR |
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Identification of suitable materials to manufacture rubber products |
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Manufacture of plant potting materials out of coir pith and NR latex |
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Preparation of thermoplastic natural rubber |
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Preparation of prevulcanised latex |
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Preparation of latex/filler master batches |
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Other services |
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Manufacture of Surface coatings |
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Manufacture of products out of Bitumen such as sealants, emulsions, membranes |
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Training programs |
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Rubber wood treatment |
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Adhesive preparation |
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Rubber products manufacture |
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Rubberized coir manufacture |
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| Raw Rubber and Chemical Analysis Department |
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Testing, grading and issuing shipping certificates for all TSR produced in the country. |
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Testing and issuing quality certificates for different grades of raw rubber produced in the country for local industries and for shippers. |
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Analysis of chemicals used for processing raw rubber in the rubber products manufacturing industry, for purity |
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Analysis of skim rubber adulteration in scrap grades of crepe rubber. |
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Recommendation of chemicals for the industry and analyzing them for percentage purity. |
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Testing of finished product such as ; |
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Rubber gloves for sodium pentachlorophenate content and powder content. |
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Rubber content in vulcanized product. |
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Contamination of metal ions in dipped products. |
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Organizing inter laboratory cross check programs for raw rubber & latex testing laboratories & evaluation of results statistically. |
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Trouble Shooting Activities such as Calibration of latex tanks and Insrument Calibration |
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Analytical charges are as follows |
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Service |
A brief description |
Charges
Rs/Sample
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1. |
Raw rubber –Full Report |
Po,PRI, Dirt,Ash, VM, N, colour |
600.00 |
2. |
Mooney viscosity |
ISO 289-1 |
200.00 |
3. |
Plasticity No. (Po) |
ISO 2007 |
150.00 |
4. |
Plasticity Retention Index ( PRI) |
ISO2930 |
250.00 |
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Dirt Content. |
ISO249 |
300.00 |
6. |
Ash Content. |
ISO 247 |
200.00 |
7. |
Volatile Matter content(VM) |
ISO 248 |
150.00 |
9. |
Nitrogen Content |
ISO 1656 |
300.00 |
10.
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Colour (Lovibond) |
ISO 4660 |
200.00 |
11. |
Acetone Extraction |
SLS 252 |
750.00 |
12. |
Accelerated Storage Hardning |
RRIM |
500.00 |
13. |
Isoprene Content |
ISO5945 |
1000.00 |
Analysis of Latex |
1. |
Full report |
TSC, DRC, VFA, MST& Alkalinity |
1550.00 |
2. |
Total Solid Content(TSC) |
ISO124 |
250.00 |
3. |
Dry Rubber Content(DRC) |
ISO126 |
250.00 |
4. |
Volatile Fatty Acid No.(VFA) |
ISO506 |
500.00 |
5. |
Mechanical Stability Time(MST) |
ISO 35 |
350.00 |
6. |
Alkalinity |
ISO125 |
200.00 |
7. |
KOH |
ISO127 |
500.00 |
8. |
Viscosity(Brookfield) |
ISO 1652 |
200.00 |
9. |
Mg content |
Titrimetric |
400.00 |
10. |
Coagulum content |
ISO706 |
500.00 |
Analysis of Chemicals |
1. |
Strength of Sodium bisulphite |
Titrimetric |
500.00 |
2. |
Strength of Sodium Sulphite |
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500.00 |
3. |
Strength of Oxalic Acid |
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500.00 |
4. |
Strength of Bleaching Agent |
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1000.00 |
5. |
Strength of Formic Acid |
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500.00 |
6. |
Strength of Ammonia |
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500.00 |
7. |
Strength of Sulphuric Acid |
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| Rubber Technology and Development Department |
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Testing services |
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Test |
A brief description |
Charges
Rs /sample
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1. |
Monsanto rheogragh (cure time, scorch time, max. & min. torque, etc.) |
ISO 6502: 1983(E) |
750 |
2. |
Tensile properties tensile strength , modulus, elongation at break
(accelerated ageing & heat resistance) |
ISO 37: 1994 (E) |
Without ageing
500 (with preparation of test pieces)
400 (without preparation of test pieces)
With ageing
800 (with preparation of test pieces)
700 (without preparation of test pieces)
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Tear strength |
ISO 34-1: 1994 (E) |
Without ageing
500 (with preparation of test pieces)
400 (without preparation of test pieces) |
4. |
Hardness
(IRHD/Shore A) |
ISO 48: 1994 (E) |
300 (with preparation of test pieces)
200 (without preparation of test pieces) |
5. |
Abrasion resistance |
DIN 53516 (1987): |
400 (with preparation of test pieces)
350 (without preparation of test pieces) |
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Density (or specific gravity) |
ISO 2781: (E) |
400 |
7. |
Resistance to flex-cracking |
ISO 132-1983: (E) |
500 |
8. |
Resilience |
ISO 4662-1986: (E) |
300 |
9. |
Peel strength |
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200 |
10. |
Compression set |
ISO 815-1991: (E) |
400 (without ageing)
700 (with ageing) |
11. |
Swelling test |
Determination of the cross-link density |
450 |
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Trouble shooting services |
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Latex / dry rubber based products manufacturing industries Finding solutions to problems encountered during manufacture of latex/dry rubber based products |
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Training Programs |
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Training programs on latex / dry rubber based products manufacture are conducted on request, especially for small / medium scale rubber product manufacturers as well as for entrepreneurs interested in setting up cottage industries. |
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| Raw Rubber Process Development and Chemical Engineering Department |
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Waste water testing laboratory is listed by the Central Environmental Authority of Sri Lanka and testing of industrial waste water is undertaken by the department. |
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Analysis of raw rubber, rubber processing water and chemicals for their metal ion concentrations using Atomic Absorption Spectrophotometer (AAS). |
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Trouble shooting in raw rubber manufacture |
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Training programs: Conducting tailor made training programs for the managers, field staff and the factory staff to address metrolac related issues, centrifuged latex and dry rubber manufacture, drying etc.(Charges: Nominal charges depending on the duration of the training session) |
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| Advisory Services Department |
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| ASD renders following services to Rubber Smallholders free of charge |
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Quality improvement of RSS production (DRC adjustment, acids solution preparation, correcting rolling defects, sheet drying, smoking and grading will be covered). |
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Remedial measures for plant nutrient deficiencies (Soil conservation practices, identification of nutrient deficiencies, site- specific fertilizer recommendations) |
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Advisory Works on latex exploitation systems (Tapping panel marking, correction of tapping panels, Introduction of latex stimulation techniques) |
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Identification and control of diseases (Site visits will be available on request) |
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Awareness programs on rubber cultivation for O/L students in government schools (One day programs will be available on request at regional level) |
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Preparation of fertilizer mixture and application of fertilizer (Demonstration programs are available on request) |
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Introduction of soil conservation practices for soil fertility management (Advisory visits on establishment of cover crops, mulching and terracing available on request) |
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| Training Programs |
Two types of training programs are conducted by the ASD for rubber growers |
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| Centralized farmer Training programs |
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Nursery management and bud grafting training for selected nursery owners and bud grafters |
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Advance training on rubber cultivation and plantation management for medium scale rubber growers |
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Advance training on rubber cultivation and processing for rubber growers in non traditional areas |
(Above training programs are conducted at the Training Centre, Nivitigalakele, Matugama. Accommodation facilities are available for 32 participants). |
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| Decentralized Training Programs |
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Mobile Latex Extraction Officer Training Schools – (10 full days training classes are arranged on request). |
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Skill development of Rubber Latex Extraction Officers – (3 half days classes are arranged on request). |
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Quality improvement of RSS produced in the smallholder sector – (01 full day training session are arrange on request). |
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Training and awareness raising on recommended technologies for productivity improvement - (01 full day training workshops are arrange on request). |
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Regional level training programs on white root disease control - (01 full day training workshops are arranged on request). |
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