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
1.12939
Lactose Standard 5 %
Certified Reference Material for Karl Fischer Titration Aquastar®
Synonym(s):
Lactose Standard 5 %, Milk sugar, Lactobiose
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$278.00
$307.00
About This Item
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Product Name
Lactose Standard 5 %, Certified Reference Material for Karl Fischer Titration Aquastar®
SMILES string
O1[C@H]([C@@H]([C@H]([C@H]([C@H]1CO)O)O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO
InChI
1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11+,12+/m1/s1
InChI key
GUBGYTABKSRVRQ-XLOQQCSPSA-N
grade
certified reference material
agency
ISO 17025, 17034
product line
Aquastar®
form
solid
autoignition temp.
390 °C
potency
>10000 mg/kg LD50, oral (Rat)
reaction suitability
reaction type: water standard for Karl Fischer titration
packaging
ampule of 10 g
technique(s)
Karl-Fischer titration: suitable
titration: suitable
pH
4.0-6.5 (20 °C, 100 g/L in H2O)
mp
202 °C
bulk density
500 kg/m3
format
neat
storage temp.
15-25°C
Quality Level
1 of 4
This Item | 1.07657 | 1.07660 | 1.37045 |
|---|---|---|---|
| agency ISO 17025, 17034 | agency - | agency - | agency BP, ChP, JP, NF, Ph. Eur. |
| grade certified reference material | grade - | grade - | grade - |
| format neat | format - | format - | format - |
| product line Aquastar® | product line - | product line - | product line - |
| form solid | form solid | form powder | form powder |
| autoignition temp. 390 °C | autoignition temp. 390 °C | autoignition temp. 390 °C | autoignition temp. - |
Analysis Note
Measurement method: coulometric according Karl Fischer
extended measuring uncertainly: +/- 0.05 %
Application
Features and Benefits
- Available in a secure plastic bottle with the material subjected to stability and homogeneity studies, following ISO 17034 and ISO Guide 35
- High-quality offering accurate and reliable results
- Accompanied with a comprehensive and batch-specific digital certificate of analysis (CoA) for an effective quality management system
- Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
General description
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website. Download your certificate at https://www.sigmaaldrich.com/US/en/documents-search to view certified values, including uncertainty and expiry date.
Other Notes
Packaging
Legal Information
related product
Storage Class
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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?
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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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