凝血酶来源于牛血浆,Thrombin from bovine plasma [Factor IIa];≥60 NIH units/mg protein (biuret)
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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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D-(+)-半乳糖,D-(+)-Galactose;BioXtra, pH 5.0-7.0 (20 °C, 1 M in H2O), ≥99%
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植物特殊浸粉,Vegetable Special Infusion Powder;suitable for microbiology
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三氟甲基磺酸铒(III),Erbium(III) trifluoromethanesulfonate;98%
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1,4,10,13-四氧杂-7,16-二氮杂环十八烷,1,4,10,13-Tetraoxa-7,16-diazacyclooctadecane;≥96%