1.88052
Water standard 1%
Certified Reference Material for volumetric Karl Fischer Titration 1 g ≙ 10 mg H₂O Aquastar®
grade
certified reference material
Quality Level
Agency
ISO (17025, 17034)
product line
Aquastar®
form
liquid
autoignition temp.
287 °C (DIN 51794,Information refers to the main component.)
expl. lim.
1.7 % (v/v)
technique(s)
Karl-Fischer titration: suitable
titration: suitable
bp
119 °C/1013 hPa
mp
-95 °C
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
Related Categories
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
- Evaluating the accuracy of coulometric Karl Fischer titrators according to ISO 9001 chapter 7.1.5 “Monitoring and measuring resources” as a Certified reference material (CRM)
- Checking the accuracy of measured results according to European Pharmacopeia (Ph.Eur.) chapter 2.5.32 “Water Micro Determination”
- Standardizing titrants according to European Pharmacopeia (Ph.Eur.) chapter 2.5.12 “Water Semi-Micro Determination” and the United States Pharmacopeia <921> “Water Determination”
- Titer determinations using volumetric method with one component and two component reagents
Features and Benefits
- Packed in convenient 8 mL glass ampoules and 10 single-use ampoules in a box
- Supplied with a batch-specific certificate of analysis (CoA) having data on the 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 calibration 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)
87.8 °F - Information refers to the main ingredient.
Flash Point(C)
31 °C - Information refers to the main ingredient.
Regulatory Information
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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Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.
Difficulty Finding Your Product Or Lot/Batch Number?
How to Find the Product Number
Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).
Example:
Additional examples:
705578-5MG-PW
PL860-CGA/SHF-1EA
MMYOMAG-74K-13
1000309185
enter as 1.000309185)
Having trouble? Feel free to contact Technical Service for assistance.
How to Find a Lot/Batch Number for COA
Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.
Aldrich Products
For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').
For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').
For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.
Not Finding What You Are Looking For?
In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.
Articles
Tips and tricks to completely release water from samples using internal extraction, external extraction and Karl Fischer oven method for accurate determination of water content by Karl Fischer titration method.
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.
Protocols
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.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
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