進行抗生素感受性試驗所使用的 0.5 McFarland standard 以何種試劑配製？
1% sulfuric acid & 1.175% barium chloride
1% sulfuric acid & 1.175% barium sulfate
1.175% sulfuric acid & 1% barium chloride
1.175% sulfuric acid & 1% barium sulfate
