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
1.88051
Water Standard
0.1%, Certified Reference Material for coulometric Karl Fischer Titration 1 g ≙ 1 mg H₂O Aquastar®
Synonym(s):
Water standard 0.1% for coulometric Karl Fischer Titration
About This Item
Recommended Products
Product Name
Water standard 0.1%, Certified Reference Material for coulometric Karl Fischer Titration 1 g ≙ 1 mg H₂O Aquastar®
grade
certified reference material
Quality Level
Agency
ISO 17025, 17034
product line
Aquastar®
form
liquid
autoignition temp.
287 °C (Information refers to the main component.)
expl. lim.
1.7-11.5 % (v/v) Information refers to the main component.)
technique(s)
Karl-Fischer titration: suitable
titration: suitable
bp
119 °C/1013 hPa
transition temp
flash point 31 °C (Information refers to the main component.)
density
0.92 g/cm3 at 20 °C
format
single component solution
storage temp.
15-25°C
General description
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Application
Features and Benefits
- Packed in convenient 8 mL glass ampoules with 10 single-use ampoules in a box
- Supplied with a batch-specific certificate of analysis (CoA) having data on exact measured water content of the batch, uncertainty, method of analysis, the NIST batch, and minimum shelf life
- Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Directly traceable to SI unit (kg) and verified by SRM 2890 from NIST
Packaging
Analysis Note
Legal Information
reagent
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Flam. Liq. 3 - STOT SE 3
Target Organs
Central nervous system
Storage Class Code
3 - Flammable liquids
WGK
WGK 1
Flash Point(F)
88.7 °F - closed cup - Information refers to the main ingredient.
Flash Point(C)
31.5 °C - closed cup - Information refers to the main ingredient.
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Articles
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.
Protocols
Karl Fischer titration offers accurate water content determination in hemp samples compared to the loss on drying method.
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How can I determine the shelf life / expiration / retest date of this product?
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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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