Status:
ReviewerMember since: 2023
Organization: Introspective Arts LLC
Great reproducibility
Application Area: Fungi and Mushroom Analysis
"Great effective column for fungi separations. I’ve used for all kinds of fungi."
Status:
ReviewerMember since: 2018
Organization: CRA-W
Saves time and money by using this material
Application Area:Analyze pesticides
"Very easy to develop a new method of pesticide analysis with this HPLC column"
Status:
ReviewerMember since: 2018
Organization: Analitek
Great results!
Application Area:vitamins by hplc
"Customers to whom we have sold the Ultra C18 column and who have already used it have seen excellent results. A good, economical alternative."
Status:
ReviewerMember since: 2018
Organization: Exova
Good product with longer life
Application Area:Organic acids
"Reproducible results with aqueous eluent. Good column for organic acids."
Status:
ReviewerMember since: 2013
Organization: University Multispectral Laboratories
Application Area:Food Analysis
"Good reproducibility and peak shape. I switched from an instrument manufacturer's columns to Restek with no degradation in performance. I would definitely recommend in the future."
Status:
ReviewerMember since: 2013
Organization: University Multispectral Laboratories
Application Area:Environmental analysis
"We use these now in our laboratory, instead of another product from the same manufacturer as our HPLC. They work great, no problems with reproducibility or peak shape."
Status:
ReviewerMember since: 2013
Organization: Shawnee State University
Application Area:undergraduate research
"The columns were excellent for separating the components in solutions such as whisky's and craft beers. The resolution was great and the reproducibility was consistent."
Status:
ReviewerMember since: 2009
Organization: IMPAX LABORATORIES
Application Area:pharmaceutical
"Best retention as tested among different vendors in the catagory of aqueous columns so far."
Status:
ReviewerMember since: 2010
Organization: University of Arizona
Application Area:chemistry
"Great columns for use in drug discovery and development. The vendor has a huge catalog that is a bit intimidating, but the selection was perfect for our needs."
The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, these columns are designed for selective and reliable HPLC applications.
The Ultra Aqueous C18 HPLC column provides reproducible retention times and can be used with highly aqueous mobile phases, which may eliminate the need for sample derivitization or ion pairing reagents. This column features a true C18 alkyl bonded phase, meeting the requirements of a US Pharmacopoeia (USP) L1 stationary phase.
The Ultra Aqueous C18 column uses a novel bonding chemistry that results in polar groups at the silica surface. These surface polar groups keep the alkyl stationary phase extended, and thus wetted by the mobile phase—even when using up to 100% aqueous mobile phases.
Additionally, although the Ultra Aqueous C18 column behaves similarly to a traditional base-deactivated C18 column when analyzing neutral hydrophobic compounds, it has enhanced retention and unique selectivity for polar and basic compounds.
Ultra Aqueous C18 Columns Features:
Column Characteristics: