Welch Materials

Catalogs
Welchrom ™ (SPE)
HPLC ULTISIL
HPLC TOPSIL
HPLC XTIMATE

Topsil™ HPLC Columns

» High purity silica (99.99%) with 150 Å pore size and 250 m2/g surface area
» 12% carbon loading for C18 phase
» Because of large pore and moderate carbon loading, Topsil C18 phase can also be used as AQ-C18 without phase collapse
» Endcapped for excellent peak shape and lifetime
» Lower back pressure than Ultisil®
» Good for small molecules and peptides
» Topsil phases including C18, C8, Phenyl and Silica




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B&C BIOTECH is a company oriented Global Outsourcing for the acquisition of goods and services for scientific research, industrial production and the Public Administration. B & C Biotech is a qualified partner for managing processes dedicated to creating value and to achieve higher levels of efficiency and quality.

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