Transcription of Packed Columns - Solid Supports for USP Methods
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Packed Columns - Solid Supports for USP Methods
Packed Columns - Solid Supports for USP Methods D ESCRI PT I O N Solid SUPPORT USP CODE. Siliceous earth Silcoport Chromosorb WHP S1A. Siliceous earth, treated as S1A and both acid-and base-washed Silcoport WBW S1AB. Crushed rebrick, calcined or burned with a clay binder above 900 C, acid- Chromosorb PAW DMDCS S1C. washed, may be silanized Untreated siliceous earth Chromosorb W NAW S1NS. Styrene-divinylbenzene copolymer with nominal surface area Chromosorb 101 S2. of less than 50m2/g an ave. pore diameter of - mm Styrene-divinylbenzene copolymer with nominal surface area of 500 to Hayesep Q Porapack Q S3. 600m2/g and ave. pore diameter of mm Styrene-divinylbenzene copolymer with aromatic -0 and -N groups having a Hayesep R Porapack R S4. nominal surface area of 400 to 600m2/g and ave. pore diameter of mm High molecular weight tetra uorethylene polymer, 40-60 mesh Chromosorb T S5. Styrene-divinylbenzene copolymer with nominal surface area of 250-350m2/ Chromosorb 102, Porapack , S6.
86 These columns have been used for the last 50 years in all kinds of analyses for gas chromatography. "Packed colum use today is understandable due to the wide range
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