Reversed-phase HELC in eluents
of the acetonitrile-formic acid-water system was used in the isocratic modein eluents
from 6 to 10 vol.
Delivery of a two-dimensional HPLC system that provides the ability to run two parallel columns with different eluents
either the complete passage of the first column automatically to the second Column is given or only selected peaks on the 2nd Column access.
EDTA-containing blood samples and DBS eluents
were spiked with recombinant human FXN81-210 to a final concentration of 200 ng/mL and serially diluted to investigate recovery, linearity, limit of detection, and functional sensitivity.
The methanol eluents
were evaporated and the residues were dissolved in 500 [micro]L 90% methanol.
were methanol-water (35:65, v/v) for Eleutheroside B and Eleutheroside E.
f] values were very low in the common eluents
such as toluene, ethyl acetate and acetic acid (50:49:1) [R.
This kit has been developed in cooperation with Metrohm and includes the IC precol, umn, the reagents for the eluents
as well as the buffer and the standard solutions.
All standard solutions and eluents
were prepared with deionized water with a specific resistance higher than 18 MW/cm.
Packed with material of the same chemistry as PolarGel-M, the new PolarGel-L column is also designed for the analysis of polar compounds using both polar eluents
containing solvent mixtures such as water with high organic content, cementing the PolarGel product range as the columns of choice for chemists faced with difficult polymer analyses.
The pentane (1 and 2), benzene, ethyl acetate, and methanol eluents
represent the fractions containing aliphatics, aromatics, hetero-atom containing (ester), and polar compounds, respectively.
Formic acid (Riedel-de-Haen) and ammonium acetate (Fluka Chemie AG, Buchs, Germany) were used for preparing eluents
The identity and purity of the eluents
and contaminants in each of the above fractions were confirmed by GC-MS.