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
B4770
Buffer, reference standard
pH 7.00±0.01 (25 °C)
Synonym(s):
pH calibration solution at 25 °C pH 7.00±0.01
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Application
- Buffering systems in polymer technology: The development of in-situ forming implants and polymer systems often relies on buffer solutions to ensure pH stability, which is vital for the controlled release and stability of pharmaceutical agents (Ramos et al., 2024).
- Advanced buffering systems for protein stability studies: In protein stability and folding studies, buffer solutions provide the necessary pH-controlled environment that is critical for maintaining protein integrity and functionality (Khaing et al., 2024).
Packaging
Analysis Note
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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Protocols
Objective: To standardize a procedure for the enzymatic assay of Carbonic Anhydrase (EC 4.2.1.1) for Wilbur-Anderson Units.
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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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