"thiophene " CNS Standards List| Oil cardamom | Single tier | Wheelchairs − | Ships | Machine tools | Structural sawn | Double | Operating Elements | |
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CNS 6836
2023 Edition Method of test for thiophene in benzene 苯中噻吩檢驗法（比色法） |
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CNS 6837
2019 Edition Method of Test for Traces of thiophene in Benzene Using Isatin and Spectrophotometry 苯中微量噻吩檢驗法（分光光度計法） |
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CNS 6836
2019 Edition Method of Test for thiophene in Benzene 苯中噻吩檢驗法（比色法） |
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