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
推薦產品
產品名稱
水标 1%, Certified Reference Material for volumetric Karl Fischer Titration 1 g ≙ 10 mg H₂O Aquastar®
等級
certified reference material
品質等級
agency
ISO (17025, 17034)
產品線
Aquastar®
形狀
liquid
自燃溫度
287 °C (DIN 51794,Information refers to the main component.)
expl. lim.
1.7 % (v/v)
技術
Karl-Fischer titration: suitable
titration: suitable
bp
119 °C/1013 hPa
mp
-95 °C
轉變溫度
flash point 31 °C (Information refers to the main component.)
密度
0.92 g/cm3 at 20 °C
形式
single component solution
儲存溫度
15-25°C
一般說明
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。
應用
- 作为有证标准物质(CRM)，根据ISO 9001 7.1.5《监视与量测资源》要求，验证卡尔费休库仑法滴定仪的准确度。
- 按照欧洲药典2.5.32《水分微量测定法》标准，检查测定结果的准确度。
- 根据欧洲药典第2.5.12章《水分半微量测定法》、美国药典 <921> 《水分测定法》要求，标准化滴定剂。
- 采用单组分和双组分试剂的容量滴定
特點和優勢
- 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、不确定性、分析方法、NIST批次和最短保质期
- 经ISO/IEC 17025和ISO 17034认证校准实验室检测和验证
- 可直接溯源至SI单位(kg)，并经NIST SRM 2890验证
包裝
分析報告
法律資訊
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試劑
訊號詞
Warning
危險聲明
危險分類
Flam. Liq. 3 - STOT SE 3
標靶器官
Central nervous system
儲存類別代碼
3 - Flammable liquids
水污染物質分類（WGK）
WGK 1
閃點（°F）
87.8 °F - Information refers to the main ingredient.
閃點（°C）
31 °C - Information refers to the main ingredient.
分析證明 (COA)
輸入產品批次/批號來搜索 分析證明 (COA)。在產品’s標籤上找到批次和批號，寫有 ‘Lot’或‘Batch’.。
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文章
Methods including internal extraction, external extraction, and Karl Fischer oven ensure accurate water content determination by titration.
包括內部萃取、外部萃取和卡爾費雪烘箱等方法，可確保透過滴定法進行準確的水含量測定。
SmartChemicals enable wireless CoA data transfer, reducing human error in titration experiments.
條款
This protocol describes a one-component Volumetric Karl Fischer Titration method for the determination of water content in Benserazide hydrochloride.
Foodstuffs often provide a challenge for the water determination by Karl-Fischer. Instant Coffee is such a sample matrix and its water content has influence on quality and shelf life.
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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Can you please confirm difference between these two products with SKU number 1880520010 and 1880520013 because their description is same.
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Both products are the same. The only difference is that product 1880520313 is a "SmartChemical" with an RFID tag on the label for seamless data transfer to the instrument. Visit www.sigmaaldrich.com/SmartChemicals<http://www.sigmaaldrich.com/SmartChemicals> for additional information.
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