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Merck

B4770

Sigma-Aldrich

缓冲液,认证标准品

pH 7.00±0.01 (25 °C)

别名:

pH校准液,25 °C下pH 7.00±0.01

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500 ML
$96.60
1 GAL
$498.00

$96.60


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500 ML
$96.60
1 GAL
$498.00

About This Item

MDL號碼:
分類程式碼代碼:
12161700
NACRES:
NA.25

$96.60


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形狀

liquid

品質等級

顏色

color-coded yellow

pH值

7.00±0.01 (25 °C)

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應用


  • 高分子技术中的缓冲体系:开发原位形成植入剂和聚合物体系时通常依靠缓冲溶液稳定pH,对药物的控释和稳定性有重要作用(Ramos et al., 2024)。

  • 蛋白质稳定性研究的先进缓冲体系:在蛋白质稳定性和折叠研究中,缓冲溶液提供必需的pH受控环境以维持蛋白的完整性和功能(Khaing et al., 2024)。


包裝

500mL 聚乙烯瓶包装;1 加仑便利架顶分配器(带龙头)。

分析報告

根据 N.I.S.T. 标准物质标准化。

儲存類別代碼

12 - Non Combustible Liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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实验方案

Enzymatic Assay of Carbonic Anhydrase for Wilbur-Anderson Units (EC 4.2.1.1)

Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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