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If you are a bargain hunter please give us a call, we always have instruments in stock, which have not been refurbished and can be sold as is in working condition. Scientific Equipment Source provides service and training on site in most of central Ontario this includes neighboring cities Ajax, Whitby, Pickering, Oshawa, Toronto, Mississauga. The determination of residual solvents (RS), formerly called organic volatile impurities (OVI), in pharmaceutical products is probably the most important application of gas chromatography in pharmaceutical quality control. This refurbished Varian Saturn 2000 with 3800 GC and 8200 AutoSampler is really in a great shape and is tested at SpectraLab Scientific.
Sensitivity - Typical performance for 1pg of Octafluoronaphthalene yields a signal to noise ratio of better than 20:1 at scan mass range 50-300 amu. Solid Phase Extraction (SPE) of organic compounds in water samples on C18 or mixed-mode resin cartridges. Liquid-Solid extractions via traditional Sohxlet or ThermoFisher-Dionix Accelerate Solvent Extraction methods.
Perkin-Elmer AAnalyst 800 Atomic Absorption Spectrometer for analysis of metals by flame AA, and trace metals by graphite furnace AA, and arsenic, selenium, and mercury by hydride generation AA. Dionex DX-1300 ion chromatograph (including a reagent free system, a gradient pump (GP40) and an electrical conductivity detector (CD20)) for common cations and anions and volatile fatty acids. Dionex DX-1600 ion chromatograph with post column reaction and UV-VIS detection for hexavalent chromium.
For more information on the Environmental Quality Laboratory please contact Professor Joan E.

This refurbished Waters 1525 HPLC System includes Waters 1525 Binary HPLC Pump, Waters 717 Plus Autosampler, Waters 474 FL Detector, Waters 2996 PDA and Waters 2487 Dual Absorbance Detector (DAD).
We are seasoned professionals in this area and we would be extremely happy to have you speak with one of our experts here at SpectraLab. The Shimadzu LC-10ADVP micro-plunger pump for Shimadzu VP Series HPLC system is unsurpassed for stable, pulse-free solvent delivery. The Shimadzu LC-10ADVP pump accomodates a wide array of applications and can be set up in isocratic, high-pressure gradient, or low-pressure gradient configurations.
We can also provide training and courses on site on chromatograph (GC), HPLC in the Durham region; this includes Pickering, Ajax, Whitby, Oshawa. We encourage you to contact us to speak with one of our expert and professional team members.
The HP 6890 series GC features electronic pneumatics control of all gas pressures and flows.
Its improved seal and plunger materials provide increased pump durability, and a standard leak sensor adds safety. Onboard sensors automatically compensate for ambient temperature changes and barometric pressure differences to routinely achieve more accurate and reproducible results. Its dual reciprocating 10µL plungers enable superior detector baseline stability and minimal baseline noise, making this pump ideally suited for high sensitivity applications including refractive index, conductivity, electrochemical, and mass spectrometer detection. By providing stable results, EPC reduces recalibration frequency and improves laboratory productivity.

It is hoped that class 1 and 2 solvents will be replaced by class 3 solvents, which have low toxic potential to humans.
Consequently, the analytical method(s) used to monitor these residual solvents in pharmaceutical products must also cover this range.For the analysis of residual solvents, gas chromatography in combination with flame ionization detection (GC-FID) is normally used. Sample preparation and introduction is via static headspace (SHS).2,3 In this way, the (mostly) volatile solvents are introduced selectively, and the analytical system (inlet, column, and detector) is not contaminated by the (mostly) nonvolatile drug substance or drug product.
Some solvents listed in the ICH guideline are not volatile (enough) and not amenable to SHS-GC analysis. Examples are formic acid, acetic acid, dimethyl sulfoxide (often used as method solvent), formamide, ethylene glycol, and sulfolane.
Calibration solutions were prepared in the same solvent at 0.15–15 ppm level for class 1 and 6–600 ppm level for class 2 and 3 solvents.
The column effluent was split using a purged splitter Capillary Flow Technology device to the FID and MS (Agilent 5975 MSD).

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