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/418/501/product-dating-information-06-25-mk.pdf
產品名稱
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 (Information refers to the main component.)
expl. lim.
1.7-11.5 % (v/v) Information refers to the main component.()
反應適用性
reaction type: water standard for Karl Fischer titration
包裝
ampule of 10 × 8 mL
技術
Karl-Fischer titration: suitable
titration: suitable
bp
119 °C/1013 hPa
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
1 of 4
本產品 | 1.88050 | 1.88052 | 1.88054 |
|---|---|---|---|
| agency ISO 17025, 17034 | agency ISO 17025 | agency ISO (17025, 17034) | agency ISO 17025, 17034 |
| grade certified reference material | grade reference material | grade certified reference material | grade certified reference material |
| format single component solution | format single component solution | format single component solution | format neat |
| product line Aquastar® | product line Aquastar® | product line Aquastar® | product line Aquastar® |
| form liquid | form liquid | form liquid | form solid |
| autoignition temp. 287 °C (Information refers to the main component.) | autoignition temp. 465 °C | autoignition temp. 287 °C (DIN 51794,Information refers to the main component.) | autoignition temp. - |
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
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、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
包裝
分析報告
法律資訊
相關產品
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）
88.7 °F - closed cup - Information refers to the main ingredient.
閃點（°C）
31.5 °C - closed cup - 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’.。
文章
Methods including internal extraction, external extraction, and Karl Fischer oven ensure accurate water content determination by titration.
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.
SmartChemicals enable wireless CoA data transfer, reducing human error in titration experiments.
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。
條款
Karl Fischer titration offers accurate water content determination in hemp samples compared to the loss on drying method.
與乾燥損失法相比，卡爾菲舍滴定法可精確測定大麻樣品中的含水量。
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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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
Helpful?
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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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