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
推薦產品
等級
analytical standard
for GPC
儲存期限
limited shelf life, expiry date on the label
分析物化學類別
oligosaccharides
技術
gel permeation chromatography (GPC): suitable
應用
cleaning products
cosmetics
food and beverages
personal care
形式
neat
儲存溫度
2-8°C
尋找類似的產品？ 前往 產品比較指南
一般說明
應用
- 在使用高效体积排除色谱法（HPSEC）估测海藻— S. latissima 和 M. stellatus中多糖部分的分子量时，用于校准聚合物基色谱柱
- 通过体积排除色谱结合多角度激光散射（MALLS）检测器测量低聚纤维素的分子质量
- 在测量微藻中糖原的分子量分布时校准SEC色谱柱
- 用凝胶渗透色谱（GPC）定量分析海藻盐–壳聚糖微胶囊的成膜过程。[2]
成分
使用前需称量标准品。适用于在水溶液和DMSO中进行校准。
试剂盒包含10种不同普鲁兰标准品，每种100 mg，Mp范围从〜350至〜700,000。
儲存類別代碼
10 - Combustible liquids
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves
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相關內容
Dextrans are polysaccharides with molecular weights ≥1,000 Dalton, featuring a linear backbone of α-linked d-glucopyranosyl repeating units.
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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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What is specification for GPC pullulan standards. Pullulan standard with Mp 22000Da supplied in different lot can vary how much % from 22000Da
1 answer-
This product is intended for use as a calibration standard for GPC/SEC/GFC systems. While there is not specification for the Mp values, these are reported on the lot specific Certificate of Analysis. The lowest value reported for the Mp 220000Da is 19.4000Da. Please see the link below to review a sample or lot specific Certificate:
https://www.sigmaaldrich.com/product/sial/96351#product-documentation
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