Shodex SEC Calibration Standard kits
Shodex calibration standards for Size Exclusion Chromatography (SEC) play a crucial role in ensuring accurate molecular weight measurements.
These standards are available for both organic and aqueous phases.
The kits include pullulan (polysaccharide), polystyrene (PS), and polymethylmethacrylate (PMMA), allowing researchers to calibrate their SEC systems effectively.
Shodex is a reputable manufacturer that provides reliable and high-quality solutions for chromatography applications, making their calibration standards a valuable resource for scientists and analysts in the field.
מידע נוסף
Pullulan calibration standard
- Kit STANDARD P-82 with 8 different MW
- Water-soluble unbranched polysaccharide calibration kit for aqueous SEC
- Pullulan is a linear polysaccharide composed of maltotriose units connected by α-1,6 bonds, offering stability without agglomeration, crystallization, or electrical charge.
Polystyrene (PS)
- Available as three different kits for low, medium and high MW:
STANDARD SL-105, SM-105, SH-75 - Molecular weights ranging from 4 to 200,000.
- Easily soluble in tetrahydrofuran (THF), chloroform, toluene, and o-dichlorobenzene (ODCB) and are used for organic solvent SEC (GPC).
- The polystyrene is less branched, synthesized through anionic polymerization.
Polymethylmethacrylate (PMMA)
- Kit STANDARD M-75 with 7 different MW
- Suitable for use with hexafluoroisopropanol (HFIP) and dimethylformamide (DMF) solvents, as well as tetrahydrofuran (THF), toluene, methyl ethyl ketone, ethyl acetate, DMF, and DMAc
- Designed for organic solvent SEC (GPC) and features a narrow molecular weight distribution range.
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ערכות תקני כיול Shodex ל-SEC/GPC
מהם תקני כיול ל-SEC/GPC ולמה הם נדרשים?
תקני כיול ל-SEC/GPC הם פולימרים בעלי משקל מולקולרי ידוע ופיזור צר — פוליסטירן (ב-THF), PEG/PEO, פולולן ודקסטרן (מימי) — המשמשים לבניית עקומת כיול משקל מולקולרי לעמודות הדרה לפי גודל. Shodex מציעה ערכות תקנים ייעודיות לכל מערכת ממס. חשוב להתאים את התקן לממס ולטווח המשקל המולקולרי של הדגימה כדי לקבל תוצאות מהימנות.
What are SEC/GPC calibration standard kits and why are they needed?
SEC/GPC calibration standards are narrow-dispersity polymers of known molecular weight — polystyrene (THF), PEG/PEO, pullulan and dextran (aqueous) — used to build the MW calibration curve for size-exclusion columns. Match the standard to your eluent and the sample MW range.
SEC/GPC calibration standards are narrow-dispersity polymers of known molecular weight — polystyrene (THF), PEG/PEO, pullulan and dextran (aqueous) — used to build the MW calibration curve for size-exclusion columns. Match the standard to your eluent and the sample MW range.
נכתב ונבדק על ידי Dani Shahar וצוות היישומים של BioAnalytics · יבואן Shodex בישראל