Sigma-Aldrich
HEPES, ≥99.5% (titration)
Sigma-Aldrich
氯化钠, BioXtra, ≥99.5% (AT)
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HEPES, BioPerformance Certified, ≥99.5% (titration), suitable for cell culture
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氯化钠, for molecular biology, DNase, RNase, and protease, none detected, ≥99% (titration)
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三氯乙酸, ACS reagent, ≥99.0%
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L -抗坏血酸, 99%
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氯化钠 溶液, 5 M in H2O, BioReagent, for molecular biology, suitable for cell culture
Supelco
维生素C, Pharmaceutical Secondary Standard; Certified Reference Material
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氯化钠 溶液, 0.9% in water, BioXtra, suitable for cell culture
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L -抗坏血酸, BioXtra, ≥99.0%, crystalline
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L -抗坏血酸, ACS reagent, ≥99%
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L -抗坏血酸, powder, suitable for cell culture, γ-irradiated
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氯化钠, meets analytical specification of Ph. Eur., BP, USP, 99.0-100.5%
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氯化钠, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, ≥99%
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三氯乙酸 溶液, 6.1 N
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L -抗坏血酸, suitable for cell culture, suitable for plant cell culture, ≥98%
Sigma-Aldrich
HEPES缓冲溶液, 1 M in H2O
Sigma-Aldrich
HEPES, BioUltra, for molecular biology, ≥99.5% (T)
Supelco
氯化钠, reference material for titrimetry, certified by BAM, ≥99.5%
Supelco
氯化钠, Pharmaceutical Secondary Standard; Certified Reference Material
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三氯乙酸, ≥99.0% (titration)
Sigma-Aldrich
1,3-丙二醇, 98%
Sigma-Aldrich
氯化钠 溶液, BioUltra, for molecular biology, ~5 M in H2O
USP
抗坏血酸, United States Pharmacopeia (USP) Reference Standard
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L -抗坏血酸, reagent grade, crystalline
Sigma-Aldrich
氯化钠, 99.999% trace metals basis