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NIST1648A

城市颗粒物

NIST® SRM® 1648a

别名:

城市灰尘样品

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2 G
$2,530.00

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2 G
$2,530.00

About This Item

UNSPSC代码:
41116107
NACRES:
NA.24

$2,530.00

请联系客服了解存货情况
获取大包装报价

等级

certified reference material

质量水平

100

包装

pkg of 2 g

制造商/商品名称

NIST®

应用

industrial hygiene

包装形式

matrix material

相关类别

一般描述

该标准参考物质（SRM）是由位于圣路易斯港口为分析目的而专门设计的大气污染微粒吸收器收集的大气颗粒物。SRM中该成分的值是以干基报告；但是， “收货状态的物质” 含有残留水分。 SRM 1648a 颗粒尺寸分布是由Malvern Instruments制造的商业激光衍射仪获取。颗粒物是在水悬浮液中测定，详细信息见于SRM 1648a的“附加信息。”

该认证值基于来自NIST 或协作专家实验室的两种或更多化学上独立的分析技术的结果一致性。SRM 1648a的认证是有效的，在规定的测量不确定度范围内，条件是该SRM是按照“储存和使用说明中规定的要求处理和储存。”.

SRM 1648A_CERT

SRM 1648A_SDS

应用

它主要用作质量控制物质，用于评估无机分析方法，也用于测定大气颗粒物和相似基质中的选定多环芳烃（PAH）、硝基取代PAH（nitro-PAH）、多氯联苯（PCB）同类物和氯化杀虫剂。

特点和优势

  • 一单位 SRM 84L包含一瓶 2克大气颗粒物。
  • 关于产品说明、处置和运输的信息见于随附的MSDS
  • 随附的NIST证书含有关于RM的失效日期、用户警告、正确储存、使用、制备和分析说明的详细信息

法律信息

NIST is a registered trademark of National Institute of Standards and Technology
SRM is a registered trademark of National Institute of Standards and Technology

储存分类代码

13 - Non 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)

Lot/Batch Number

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Questions

1–3 of 3 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

      Helpful?

  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

      Helpful?

  3. Hello. Would the autoclaving of 1648a particles result in different states or reactivity when treated with cells?

    1 answer

    1. This product should not be heated beyond 30 °C and therefore should not be autoclaved. This product is intended for use as a GCMS standard and has not been assessed for other applications.

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