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
推荐产品
产品名称
Amberlite ™ XAD4, 20-60 mesh
表单
beads
自燃温度
800 °F
技术
LPLC: suitable
表面积
750 m2/g
基质
styrene-divinylbenzene
基质活性基团
polymer
粒径
20-60 mesh
孔径
~0.98 mL/g pore volume
100 Å mean pore size
密度
1.02 g/mL (true wet)(lit.)
1.08 g/mL (skeletal)(lit.)
分离技术
reversed phase
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一般描述
应用
其他说明
20-60 目的产品目录号为20276，10358，XAD4
20-50 目的产品目录号为06444
法律信息
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
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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 the recommended method for cleaning XAD4 before use?
1 answer-
The following pretreatment is recommended:
1.The adsorbent is shipped as a water-wet product with sodium chloride (NaCl) and sodium carbonate (Na2CO3) salts to prevent bacterial growth. These salts need to be washed from the adsorbent before use, and it is suggested that this be achieved by washing with water at a linear flow rate of 5-10 m/h until the required level is achieved.
2.For sensitive applications, residual monomeric or oligomeric compounds may need to be removed from the adsorbent.
3.A regeneration with the proposed regenerant is also recommended before the first service cycle. If the regenerant is an alcohol, it must be displaced with water before the first loading cycle.Helpful?
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