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J & K Scientific
has developed an innovative multi-step process to manufacture
fused silica capillary columns. Since each step is independent
and the product at the end of each step is monitored for
quality, J & K Scientific's columns are reproducible. The
stationary phase is chemically bonded to the surface of the fused silica capillary tubing and it is also cross-linked to
increase the stability of the column. As a result, J & K Scientific's columns are highly efficient, stable, reproducible,
and washable by organic solvents.
The J & K
Scientific Liquid Crystal Capillary Column technology relates to
the development of several patented liquid crystal polysiloxane
stationary phases. Liquid Crystal capillary columns made from
these stationary phases are highly effective in isomer-specific
separation and analysis of environmental samples containing
polycyclic aromatic hydrocarbons, polychlorinated biphenyls,
polychlorinated, dibenzo-p-dioxins, and polychlorinated dibenzofurans. The novelty of the liquid crystal polysiloxane
stationary phases developed by J & K Scientific is in the
incorporation of a fused ring moiety/naphthalene in the
structure of the stationary phase, which enhances the
isomer-specificity and stability of the resulting columns.
Unique GC/MS
reference standards developed by J & K Scientific are highly
useful in organic trace analysis.
TECHNOLOGY AND OPPORTUNITY
The capillary column is an integral part of a Gas Chromatograph
(GC) and related analytical instruments such as GC/MS.
Thousands of GCs, and GC/MSs, and hence capillary columns, are
being used every day for the analysis of volatile compounds. J &
K Scientific has been developing the column-making technology
and unique liquid crystal stationary phases for the past several
years. The column-making technology developed by J & K
Scientific has been proven to be effective to produce columns of
the highest quality. J & K Scientific has developed computer
programs to test the columns. The reports on the quality of the
column go to the user along with the ordered column so the user
can test the column in his laboratory, if necessary.
Currently, general purpose columns, such
as Immobilized Chemically Bonded dimethylpolysiloxane (ICB-1)
and Immobilized Chemically Bonded dimethyl (5% phenyl)
polysiloxane (ICB-5) columns with internal diameters of
0.10 mm, 0.15 mm, 0.18 mm, 0.25 mm,
0.32 mm, and 0.53 mm
with stationary phase thicknesses of
0.10µm,
0.12 µm, 0.25 µm, 0.50 µm and 1 µm
in specific lengths
are available. Unique liquid crystal polysiloxane (LC-50) and
ICB-PAH columns in selected lengths, diameters, and film
thickness are also available. |
