Environmental Products & Reviews

Functional groups, such as octyl (C8) and octadecyl (C18), can be bonded to the silica surface to provide non polar interactions.  Each of these sorbents exhibits unique properties of retention and selectivity for a particular analyte.  The choice of which sorbent is best for a particular method will be influenced by the percent recovery of analyte from the sample matrix and the cleanliness of the resulting chromatography.

Functional groups, such as octyl (C8) and octadecyl (C18), can be bonded to the silica surface to provide non polar interactions.  Each of these sorbents exhibits unique properties of retention and selectivity for a particular analyte.  The choice of which sorbent is best for a particular method will be influenced by the percent recovery of analyte from the sample matrix and the cleanliness of the resulting chromatography.

This mixed phase chemistry, in which two primary modes of attraction are present, allows for a more efficient and selective extraction compared to traditional reversed phase techniques.  Neutral and ionized analytes can be simultaneously extracted from a complex mixture and eluted as separate fractions. A mixed phase sorbent offers the following advantages: Eluting acidic and neutral analytes separately from basic analyt…

This chemistry promotes high retention of a wide range of analytes, reducing method development time and facilitating a generic approach to sample preparation.

The Empore™ High Performance Extraction Disk Plate differs in design from plates offered by other manufacturers and requires a specific vacuum manifold.  Manifolds supplied by different plate manufacturers are specific to the design of their plates and cannot generally be used with plates from other manufacturers.  In some cases, the use of spacers to raise/lower the height of a collection device inside the manifold may overco…

Replacement gaskets are available with the vacuum manifold assembly.  The gasket can become worn over time and the seal between the plate and the manifold will be affected.  This may result in poor vacuum pressure and negatively effect flow rates.  The gasket should be checked regularly and replaced when it becomes worn.

EmporeTM Tape Pads are intended for sealing unused portions of a 96-well solid phase extraction plate during vacuum processing to enable vacuum to be uniformly applied to each well being used.  Use a clean sheet each time for maximum sealing ability.  Note: these tape sheets are not intended for sealing collection plates prior to sample injection because the adhesive may clog the injection needle.

Empore Filter Aid 400 has been shown to improve flow rates and recoveries for separation and filtration of water samples containing suspended solids.  When placed on top of the Empore™ Extraction Disk at a depth of about 1 cm, Empore™ Filter Aid 400 acts as depth filter to inhibit the migration of suspended solids to the surface of the disk.  This reduces extraction time and improves rates and recovery of analytes.

Fits plastic or glass media bottles with 33mm neck sizes. Cellulose acetate (CA) membranes provide fast flow rates and low protein binding and are good for filtering cell culture media. Angled hose connector simplifies vacuum line attachment. Individually packaged, sterile and certified nonpyrogenic. Each system has the membrane material and pore size printed on the unit and is color-coded by membrane type for easy produ…

VICI introduces the GC detector where the PDD (pulsed discharge detector) utilizes a stable, low-powered, pulsed DC discharge in helium as the ionization source. The D-2 is a dual mode, universal detector system which can be retrofitted to your older GC. The D-2-I is a helium photoionization detector, optimized for trace level work with packed columns. The stand-alone systems include detector, controller, electrometer, helium…

Pulsed discharge detector Model D-3 is designed for plug-and-play installation on Agilent GC's, with models available for the 6890 and 7890. The D-3 is optimized for trace level work in the helium photoionization mode, and utilizes the electronics and power supply of the host GC. Model D-5 is optimized for electron capture detection. Available for 110 VAC and 230 VAC.

Model D-5 is a pulse discharge GC detector designed for plug-and-play installation on the Agilent 6890. The D-5 is optimized for trace level work in the electron capture mode, and utilizes the electronics and power supply of the host 6890. Model D-3 is optimized for helium photoionization detection. Available for 110 VAC and 230 VAC.

Model D-4 a GC Detector available in versions for easy installation on most of the GC's in current use, including the Varian 3800, Shimadzu 14 and 17, ThermoFinnigan Trace, Mega, and Top, and Hewlett Packard 5890. The D-4 is single mode, optimized for trace level work in the helium photoionization mode. Available for 110 VAC and 230 VAC.

Model D-6 is a single mode GC detector, optimized for trace level work in the electron capture mode. IT is available in versions for easy installation on most of the GC's in current use, including the Varian 3800, Shimadzu 17, ThermoFinnigan Trace, Mega, and Top, and Hewlett Packard 5890.  Available for 110 VAC and 230 VAC.

Reduced breakdown liners Our improved injection port liner reduces breakdown of endrin and DDT during injections while increasing the interval between liner changes. The problem DDT and Endrin are easily degraded in the injection port; with non-deactivated liners and those filled with non-deactivated glass wool, Endrin breakdown can be as high as 98%. EPA method 8081A states "If degradation of either DDT or Endrin exceeds 15%,…

VICI AG uses proprietary liquid phase processing to produce low bleed characteristics while maintaining identical retention characteristics to the phases you are used to. These processes combined with proprietary coating, curing, bonding, and crosslinking produce MS-certified bleed characteristics equal to the best. Improved upper temperature limits enhance column "bake out", reducing sample carryover and cycle times. ValcoBon…

Now you can reduce run time, faster than micropacked, by replacing your packed columns with ValcoPLOT HayeSep capillary PLOT columns, with phases available only from VICI. Our proprietary phase processing produces the first capillary PLOT columns with characteristics identical to HayeSep packed columns. The ValcoPLOT line also includes Molesieve and Alumina PLOT columns.  Visit VICI AG website to veiw now.

Permeation tubes are small, inert capsules containing a pure chemical compound in a two phase equilibrium between its gas phase and its liquid or solid phase.  They are used to generate a stable concentration of a specific trace chemical. At a constant temperature, the device emits the compound through its permeable portion at a constant rate. They are typically inserted into a carrier flow to generate test atmospheres for c…

VICI Metronics Dynacalibrators introduces the stand-alone portable calibrator. VICI Metronics Dynacalibrators allow you to verify the accuracy of analytical data from air pollution monitoring, industrial hygiene surveys, odor surveys, and other instruments measuring gas concentration. All models enable calibrations traceable to NIST standards for almost any gas analyzer, in the lab or in the field. Completely portable • Pump p…

Patented G-Cal permeation tubes offer a proven and repeatable means of generating a desired gas or vapor concentrations. The permeant gas escapes through the proprietary membrane system and mixes with a carrier gas (nitrogen is the most common) at a controlled flow rate to obtain a known mixture in ppm or ppb. Applications include calibration of gas monitoring systems and chromatographs, accuracy check of gas detectors, and ge…

Ultra-high capacity for the contaminant of interest; either Moisture, Hydrocarbons, Oxygen, Sulfur and Mercury. For applications with a single contaminant of interest, high capacity contaminant specific traps are your best option, since they generally have four times as much capacity for the specific contaminant as a purifier. This translates to a capacity that exceeds twelve standard type "A" tanks of gas or the equivalent of…

VICI AG heated helium purifier provides point-of-use purification of helium or other noble gases, such as Ar, Ne, Kr, and Xe, to sub-ppm levels of reactive gaseous impurities, removing even nitrogen and methane. The nitrogen purifier is similar, purifying nitrogen to sub-ppm levels of gaseous impurities. The miniature version of each purifier is designed to be installed in a GC’s flow path immediately upstream of the injector.…

Gas purifiers for specific gases designed to go in-line with the carrier or detector gas supply, these gas purifier modules dramatically reduce contaminant PPM levels in helium, hydrogen, nitrogen, or air. They decrease baseline noise and increase GC/MS sensitivity and replace three traps with one gas purifier.This line includes original equipment gas purifiers for the Agilent Mass Spec and LC Mass Spec. Additional specialized…