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
~550 m2/g
基質
Porapak QS
粒徑
100-120 mesh
密度
~0.34 g/mL (free fall density)
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一般說明
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
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.
應用
Porapak™ QS packed column maybe used for gas-solid chromatographic determination of moisture in lyophilized pharmaceutical products.
腳註
Porapak QS 是硅烷化的 Porapak Q，用于降低表面吸附。
法律資訊
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)
G W Lyman et al.
Journal - Association of Official Analytical Chemists, 62(1), 71-74 (1979-01-01)
A gas-solid chromatographic procedure is described for the analysis of low levels of moisture in individual lyophilized vials of pharmaceutical products. Dry ethanol, which contains methanol as the internal standard, is injected through the septum of the vial to dissolve
Grob RL and Barry EF.
Modern Practice of Gas Chromatography, 79-83 (2004)
Poole C.
Gas Chromatography, 127-130 (2012)
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