羟乙基哌嗪乙硫磺酸,HEPES, Free Acid, ULTROL® Grade;A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C. Absorbance (1.0 M, H2O, 260 nm):≤0.05.
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羟基化红色荧光纳米金刚石悬浮液,100 nm Hydroxylated Red Fluorescent Nanodiamond Suspension, zeta potential +25mV, ~2 ppm NV -
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