推薦產品
形狀
solid
包裝
bottle of 75 cc
參數
250 °C temp. limit
技術
gas chromatography (GC): suitable
表面積
~525 m2/g
基質
Porapak R
粒徑
50-80 mesh
密度
~0.32 g/mL (free fall density)
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一般說明
Porous polymers are the most suitable adsorbent for applications based on the analysis of gases, acids, amines, organics of low carbon number and water. They are best suited for gas chromatography and are basically copolymers of polydivinylbenzene (DVB) which are very porous in nature ranging from mesoporous to microporous. Porapak™ R is a porous polymer composed of vinyl pyrollidone mainly suitable for the separation of ethers and esters.
Porapak多孔聚合物是一种球形珠粒，具有一致的粒径、孔隙率和表面积，有助于确保分析的精确度和准确度。
有关我们任何吸附剂的更多信息，请访问 sigma-aldrich.com/adsorbents
有关我们任何吸附剂的更多信息，请访问 sigma-aldrich.com/adsorbents
應用
Porapak™ R with Amberlite™ XAD-4 maybe useful for chromatographic sampling of polar and nonpolar low-volatility compounds.
法律資訊
Amberlite is a trademark of DuPont de Nemours, Inc.
PoraPak is a trademark of Waters
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
Gas Chromatography, 127-130 (2012)
Chromatographic characterization of porous polymers for use as adsorbents in sampling columns.
Butler LD and Burke MF.
Journal of Chromatographic Science, 14 (3), 117-122 (1976)
Jackson P Audley et al.
Journal of economic entomology, 113(6), 2772-2784 (2020-11-03)
The walnut twig beetle, Pityophthorus juglandis Blackman, and its associated fungal pathogen that causes thousand cankers disease, currently threaten the viability of walnut trees across much of North America. During a 2011 assessment of seasonal flight patterns of P. juglandis
Grob RL and Barry EF.
Modern Practice of Gas Chromatography, 79-83 (2004)
Yosuke Funato et al.
Developmental cell, 55(4), 387-397 (2020-09-13)
Extracellular pH is usually maintained around 7.4 in multicellular organisms, and cells are optimized to proliferate under this condition. Here, we find cells can adapt to a more acidic pH of 6.5 and become addicted to this acidic microenvironment by
我們的科學家團隊在所有研究領域都有豐富的經驗，包括生命科學、材料科學、化學合成、色譜、分析等.
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