1 testing process. The raw rubber sheet that hardens with fermented from spinach test
1.1 physical test tensile strength with the machine. Tensile testing machine
1.2 biological test The raw rubber sheet to put in the cabinet for 7 dark and humid day compared with the raw rubber sheet used acid ฟอร์มิก
. 2. The fermentation broth to check the ability to inhibit the fungus on the tire by the disc size 0.3 cm. The dip in the fermentation broth and placed on the medium containing fungus on the rubber sheet, observe the situation was born clear zone compared with water and acid for Mick
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