Focused Photonics (Beijing), Inc. Co., Ltd is based in Canada and lists spectrometers and analyzers on Global Trade Plaza. The portfolio includes the M4000 series of spark optical emission spectrometers for alloy analysis, material testing and general OES work, as well as the M5000 series of compact desktop spectrometers for metal trace analysis, stationary material testing and alloy analysis. The M4000 models use a Paschen-Runge optical system with multi-CCD detectors covering 175-520 nm, a sealed argon circulation system, an open sample clamp adaptable to different geometries and a programmable pulse digital source with up to 1000 Hz discharge frequency and 400 A maximum current. The M5000 models are CCD-based desktop units covering 140-680 nm with programmable digital spark source, auto spectrum correction and factory pre-defined calibrations adjustable for special requirements. Buyers can send an enquiry through Global Trade Plaza.