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
1.88051
Water Standard
0.1%, Certified Reference Material for coulometric Karl Fischer Titration 1 g ≙ 1 mg H₂O Aquastar®
Synonyme(s) :
Étalon d’eau, 0,1 % pour titrage coulométrique selon Karl Fischer
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Nom du produit
Étalon d′eau (0,1 %), Certified Reference Material for coulometric Karl Fischer Titration 1 g ≙ 1 mg H2O Aquastar®
grade
certified reference material
agency
ISO 17025, 17034
product line
Aquastar®
form
liquid
autoignition temp.
287 °C (Information refers to the main component.)
reaction suitability
reaction type: water standard for Karl Fischer titration
packaging
ampule of 10 × 8 mL
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
Quality Level
expl. lim.
1.7-11.5 % (v/v) Information refers to the main component.)
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Catégories apparentées
1 of 4
Cet article | |||
|---|---|---|---|
| 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. - |
General description
Rendez-vous sur Certificats ISO et auto-évaluations qualité des sites pour consulter les certificats d'accréditation actuels.
Téléchargez votre certificat sur le site http://www.sigma-aldrich.com pour visualiser les valeurs certifiées, y compris l'incertitude et la date d'expiration.
Application
Features and Benefits
- Conditionnement pratique en ampoules de verre de 8 ml, 10 ampoules à usage unique par boîte
- Certificat d'analyse détaillé du lot précisant la teneur en eau exacte mesurée pour le lot, l'incertitude de mesure, la technique d'analyse, le lot NIST et la durée de conservation minimale
- Produit mesuré et qualifié dans un laboratoire accrédité ISO/CEI 17025 et ISO 17034
- Traçabilité métrologique directe au kilogramme (unité SI) en référence au matériau de référence SRM 2890 du NIST
Packaging
Analysis Note
Legal Information
Related product
wgk
WGK 1
signalword
Warning
hcodes
Hazard Classifications
Flam. Liq. 3 - STOT SE 3
target_organs
Central nervous system
Classe de stockage
3 - Flammable liquids
flash_point_f
88.7 °F - closed cup - Information refers to the main component.
flash_point_c
31.5 °C - closed cup - Information refers to the main component.
Certificats d'analyse (COA)
Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".
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Articles
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Protocoles
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?
1 réponse-
Utile ?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 réponse-
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
Utile ?
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Can this standard be used for volumetric Karl Fischer titration?
1 réponse-
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/188054Utile ?
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