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
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一般描述
应用
- Pressurized planar electrochromatography of DNS amino acids derivatives in silica gel and silanized silica gel systems with formic acid addition to the water mobile phase: 本研究使用加压平面电色谱法 (PPEC) 在硅胶 60 TLC 板上探索丹磺酰 (DNS) 氨基酸衍生物的分离选择性。研究证明，高效薄层色谱 (HPTLC) 和 PPEC 系统的分离选择性存在显着差异 ，重点介绍了 PPEC 系统中的电泳效应(Chomicki and Dzido, 2021)。
- Thin-layer chromatography of DNS amino acids derivatives in systems with silica gel and silanized silica gel plates: 本文研究了硅胶 60 TLC 板上的氨基酸 DNS 衍生物分离选择性。这项研究揭示了流动相中不同浓度的乙腈对分离效率的影响，为优化生化研究中的分析技术提供了宝贵的见解(Chomicki and Dzido, 2022)。
- Determination of β-blocking receptor drugs in silica gel TLC systems with the mobile phase containing surfactant: 本研究使用含有表面活性剂的流动相，研究了β-阻断药物在硅胶 60 TLC 板上的保留和分离。这项研究评估了表面活性剂浓度对区间形状特性的影响，并对所选溶质进行了定量分析，彰显了低丙醇用量带来的环境友好性(Traczuk and Polak, 2022)。
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分析说明
孔体积（N₂-等温线）：0.74 - 0.84 ml/g
d 50（激光衍射，尺寸分布）：9.7 - 11.7 µm
层厚度：210 - 270 µm
每块板的层厚度偏差： ≤ 35 µm
色谱检测：
显色试验
hRf 值
- bleu vif organol，显色试验，亲脂性：
11 - 25
- Ceres Black G，颜色测试，亲脂性：34 - 48
- 紫罗兰色，颜色测试，亲脂性：52 - 67
分离数（显色试验，亲脂）： ≥ 10.5
在调节板上测定的典型值
洗脱液：甲苯（相对湿度 45％）
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Thin Layer Chromatography Troubleshooting: This article details TLC tips and tricks that one must consider while performing different steps of the technique.
Thin Layer Chromatography Troubleshooting: This article details TLC tips and tricks that one must consider while performing different steps of the technique.
Thin Layer Chromatography Troubleshooting: This article details TLC tips and tricks that one must consider while performing different steps of the technique.
Thin Layer Chromatography Troubleshooting: This article details TLC tips and tricks that one must consider while performing different steps of the technique.
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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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我们的科学家团队拥有各种研究领域经验，包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.
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