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本试藥在中性溶液中,顯蓝紫色,弱酸性中顯桃红色,强酸性中顯大红色,弱(酉兼)性中顯绿色和强(酉兼)性中顯黄色。它全部顯色的範围,约在pH10—11.0,較现用各种指示劑(Indicators)为廣阔;製成試紙应用稱便,故稱为“pH萬用试纸”(Universal pH Paper)。又因本试藥係從植物“地錦”的果皮上提裂而成,故又稱为“地錦试藥”(Di-King Indicator)或地錦试纸(Di-King Paper)。
The reagent in neutral solution, was blue-purple, weak acid was pink, strong acid was significantly red, weak (unitary and concurrent) was significant green and strong (unitary and concurrent) in the yellow. Its full range of color development, at about pH10-11.0, a variety of indicators than the current (Indicators) for a wide range; made of test paper application called stool, it is called “pH test strip” (Universal pH Paper). Because of this medicine from the plant “to Kam” peel on the crack from the result, it is also known as “Di-King Indicator” (Di-King Indicator) or Di-King Paper (Di-King Paper).