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
1.88051
Water Standard
0.1%, Certified Reference Material for coulometric Karl Fischer Titration 1 g ≙ 1 mg H₂O Aquastar®
别名:
水标准品，0.1% ，用于比色法卡尔费休滴定
选择尺寸
$306.00
预计发货时间2025年3月27日详情
选择尺寸
About This Item
$306.00
预计发货时间2025年3月27日详情
推荐产品
产品名称
水标 0.1 %，用于库伦法测定, Certified Reference Material for coulometric Karl Fischer Titration 1 g ≙ 1 mg H₂O Aquastar®
等级
certified reference material
质量水平
Agency
ISO 17025, 17034
产品线
Aquastar®
表单
liquid
自燃温度
287 °C (Information refers to the main component.)
expl. lim.
1.7-11.5 % (v/v) Information refers to the main component.)
包装
ampule of 10 × 8 mL
技术
Karl-Fischer titration: suitable
titration: suitable
沸点
119 °C/1013 hPa
转变温度
flash point 31 °C (Information refers to the main component.)
密度
0.92 g/cm3 at 20 °C
包装形式
single component solution
储存温度
15-25°C
一般描述
请浏览 ISO 证书和现场质量自评以查看当前的鉴定证书。
在http://www.sigma-aldrich.com下载证书以查看认证值，包括不确定性和失效日期。
应用
特点和优势
- 方便的8 mL玻璃安瓿包装，每盒含10支一次性安瓿瓶
- 提供批次特定的分析证书(CoA)，附有准确测定的批次含水量数据、分析方法、NIST批次和最短保质期
- 经ISO/IEC 17025和ISO 17034认证实验室检测和验证
- 可直接溯源至SI单位(kg)，并经NIST SRM 2890验证
包装
分析说明
法律信息
推荐
试剂
警示用语：
Warning
危险声明
危险分类
Flam. Liq. 3 - STOT SE 3
靶器官
Central nervous system
储存分类代码
3 - Flammable liquids
WGK
WGK 1
闪点(°F)
88.7 °F - closed cup - Information refers to the main ingredient.
闪点(°C)
31.5 °C - closed cup - Information refers to the main ingredient.
商品
New Aquastar® Karl Fischer Anolyte for precise and reproducible determination of low water content in the range of 10 ppm to 10000 ppm for cells without a diaphragm.
Methods including internal extraction, external extraction, and Karl Fischer oven ensure accurate water content determination by titration.
SmartChemicals enable wireless CoA data transfer, reducing human error in titration experiments.
实验方案
Karl Fischer titration offers accurate water content determination in hemp samples compared to the loss on drying method.
相关内容
SmartChemicals enable wireless transfer of CoA data stored on an RFID tag on the consumable bottle to the titrator, reducing effort and chance for human error. Crucial data required for the application is transmitted safely, reliably and intelligently to the instrument.
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Helpful?
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
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Can this standard be used for volumetric Karl Fischer titration?
1 answer-
The water content of this standard is determined by coulometric Karl Fischer Titration according to ISO 760. Suitability for use in volumetric Karl Fischer has not been determined and analytical values reported in the Certificate of Analysis apply only to the coulometric method. The Water Standard Oven 1%, product 1.88054, is suitable for both volumetric and coulometric methods. Please see the link below to review this product option:
https://www.sigmaaldrich.com/product/mm/188054Helpful?
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