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Merck
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主要文件

B5020

Supelco

缓冲液,认证标准品

pH 4.00±0.01 (25 °C)

别名:

pH校准液,25 °C下pH 4.00±0.01

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About This Item

MDL编号:
UNSPSC代码:
12161700
NACRES:
NA.25
价格与库存信息目前不能提供

表单

liquid

质量水平

颜色

color-coded red

pH值(酸碱度)

4.00±0.01 (25 °C)

储存温度

15-25°C

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应用

缓冲参比标准品在分析程序中用于pH探针和pH计的校准。

特点和优势

  • 可追溯至NIST标准参考材料
  • 可提供各种包装的方便解决方案

包装

500mL 聚乙烯瓶包装;1 加仑便利架顶分配器(带龙头)。

分析说明

根据 N.I.S.T. 标准物质标准化。

标准

产品编号
说明
价格

储存分类代码

12 - Non Combustible Liquids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

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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An integrated flex-microfluidic-Si chip device towards sweat sensing applications
Nie C, et al.
Sensors and Actuators B, Chemical, 227, 427-437 (2016)
Hydrochloric acid alters the effect of L-glutamic acid on cell viability in human neuroblastoma cell cultures
Croce N, et al.
Journal of Neuroscience Methods, 217(1-2), 26-30 (2013)

实验方案

Objective: To standardize a procedure for the enzymatic assay of Carbonic Anhydrase (EC 4.2.1.1) for Wilbur-Anderson Units.

Questions

1–2 of 2 Questions  
  1. 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

      Helpful?

  2. 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

      Helpful?

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