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溴百里酚蓝 钠盐 热销  ACS

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包装规格：5g 25g 100g in glass bottle
产品简介：一种 pH 指示剂，是测定弱酸弱碱时使用的一种指示剂，其酸性时为黄色，碱性时为蓝色。
溶解性：溶于水,在中性溶液中呈蓝绿色,在pH低于6.0的溶液中呈黄色，在pH高于7.6的溶液中呈蓝色。
体外研究：A first characterization and comparison is done by developing an easy and direct measurement method based on a pH indicator system using Bromothymol Blue (BTB) as the indicator and potassium phosphate as the buffer. A pH-shift assay is developed on the basis of Bromothymol Blue as the pH indicator and potassium phosphate as the buffer component. Three pH indicators are tested for the direct determination of 2- 2-keto-L-gulonic acid (2-KLG) production on a plate. The results show that Bromothymol Blue is superior to the other two indicators in terms of the obvious color change and a suitable pH range (blue to yellow at pH 6.5-7.5). Upon the addition of a Bromothymol Blue solution (0.1%, w/v) to an agar plate, zones surrounding colonies of K. vulgare 07 mutants change their color from blue to yellow because K. vulgare 07 mutants release 2-KLG on agar plates, thereby acidifying surrounding areas around colonies.
保存条件：室温
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