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主要文件

P4809

Sigma-Aldrich

磷酸盐-柠檬酸盐缓冲液

tablet

别名:

PCR缓冲液

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About This Item

UNSPSC代码:
12161700
NACRES:
NA.25

表单

tablet

质量水平

pH值(酸碱度)

4.5-5.5 (1 tablet/100mL in water)

溶解性

water: soluble

储存温度

room temp

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1 of 4

此商品
379824V80033360489
assay

≥99.0%

assay

99.99% trace metals basis

assay

≥99%

assay

≥99.0% (RT)

grade

ACS reagent

grade

-

grade

AR

grade

ACS reagent, puriss. p.a.

pH

2.5-4.5 (25 °C, 27 g/L)

pH

-

pH

2.5-4.5 (25 °C, 27 g/L)

pH

2.5-4.5 (25 °C, 27 g/L)

cation traces

Fe: ≤5 ppm, heavy metals: ≤0.001%, Mn: ≤2 ppm

cation traces

-

cation traces

Fe: ≤0.0005%, NH4+: ≤0.0005%, heavy metals (as Pb): ≤0.001%

cation traces

Ag: ≤5 mg/kg, Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Li: ≤5 mg/kg, Mg: ≤100 mg/kg, Mn: ≤1 mg/kg, Mo: ≤5 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Tl: ≤5 mg/kg, Zn: ≤5 mg/kg

vapor density

9.3 (vs air)

vapor density

9.3 (vs air)

vapor density

9.3 (vs air)

vapor density

-

一般描述

磷酸柠檬酸缓冲液是一种常用的缓冲液,与可溶性辣根过氧化物酶底物一起使用,如邻苯二胺二盐酸(OPD)或四甲基联苯胺(TMB)。它的pH值为5.0,具有出色的缓冲能力。柠檬酸磷酸盐缓冲片可配制0.05 M、pH 5.0的柠檬酸磷酸盐缓冲液。这些片剂提供了一种快速、方便、准确的合成柠檬酸磷酸酯缓冲溶液的方法。它消除了在缓冲液制备中称重单个成分的耗时和繁琐的过程。[1]磷酸盐-柠檬酸缓冲片由最高质量的成分制造,以严格的物理和化学规格,以确保性能和批次间的一致性。pH 5.0的磷酸盐-柠檬酸盐缓冲液片剂已在免疫测定中配制为底物缓冲液。

应用


  • Characterization of nettle leaves (Urtica dioica) as a novel source of protease for clotting dromedary milk by non-destructive methods.:在酶促提取过程中使用磷酸-柠檬酸缓冲液保持植物来源酶的稳定性和活性,说明它在乳制品天然混凝剂开发中的重要作用(Bouazizi et al., 2022)。

  • A rapid, low pH, nutrient stress, assay to determine the bactericidal activity of compounds against non-replicating Mycobacterium tuberculosis.:使用磷酸-柠檬酸缓冲液,研究开发一种低pH营养应激检测方法,评估抗菌剂对结核休眠菌的杀菌疗效,提供重要药物开发工具(Early et al., 2019)。

  • Measurement of Free Iodine in Different Formulations of Povidone-Iodine Eye Drops 5.:用磷酸-柠檬酸缓冲液检测滴眼液中碘的稳定性和释放,说明它确保护眼产品疗效和安全性的重要作用(Prado et al., 2019)。

重悬

在25℃下,一片溶于100 mL去离子水中可得到0.05 M磷酸盐-柠檬酸盐缓冲液,pH 5.0。室温储存。

象形图

Exclamation mark

警示用语:

Warning

危险声明

危险分类

Eye Irrit. 2 - STOT SE 3

靶器官

Respiratory system

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable


  • 历史批次信息供参考:

    分析证书(COA)

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