Microwave rapid method for determining dry rubber content of cuplumps
2007
Zairossani Mohd. Nor | Ahmad Khairul Muhamad | Zameri Mohamed, Malaysian Rubber Board
The development microwave rapid method for determination of dry rubber content (DRC) of cuplumps is described to enable a quantitative analysis of DRC in the fields and at rubber processing factories. The method is simple, low cost and easy to operate which will provide reliable estimation of cuplump DRC to complement the existing standard method that can only be conducted in the laboratory. The development of microwave rapid method will make raw rubber trading particularly at the farm gate level more transparent and less susceptible to DRC manipulations particular during recent trend of high rubber price. The method has been optimised by considering main factors influencing the determination of DRC including sample size, contamination by foreign materials, age and form of cuplumps. Laboratory and field trials of the method showed that the accuracy of DRC determination could be achieved within ± 2% accuracy compared to the standard laboratory method. The method has also been extended for DRC determination of creped cuplumps for factory applications which yielded high accuracy within a test period of less than 1 hour.
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