Buffer Solution usually containing a weak acid and its conjugate weak base, or a salt, of such a composition that the pH is held constant within a certain range.
通常指含有一种微酸和与之结合的一种微碱或盐，并能维持酸碱值基本恒定的溶液。
Suitable for various kinds of water quality, water, salt water, oil, lipid, weak acid, stoichiometric such media, especially ability grinding. (the stuffing the color is divided into black and white).
适用于各种水质、海水、咸水、油类、脂类、弱酸、弱碱等介质，尤其能耐研磨。（此盘根按颜色分为黑色和白色）。
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