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The Buck 210VGP atomic absorption spectrophotometer is designed to measure the concentration of elemental metals in solution. It provides integrated measurements in absorbance or emission intensity, as well as sample concentration in comparison to standard solutions. The readings can be integrated over a period from 0.5 to 10 seconds. For the transient signals obtained using flame-less techniques (cold vapor, hydride, and graphite furnace), absorbance is determined using peak area integration. The Buck 210VGP can be calibrated using up to 8 concentration values, with units of mg/L, µg/L, ppm, ppb, mEq/dL, mM/dL, µg/dL and %. Calculations can be performed using linear regression, 2nd, 3rd, and 4th order curves. Optional accessories allow the user to print absorbance data, background absorbance and concentrations in real time, and to collect absorbance values using a laboratory recorder. The Buck 210VGP interfaces with the Analyze software package for sophisticated data processing, documentation and reporting. An external computer may also process the data by using a communications program to download the data into a spreadsheet program. SAFETY The methods and analytical procedures described in this manual are designed to be carried out by properly trained personnel in a suitably equipped laboratory. In common with many laboratory procedures, the methods described may involve hazardous materials or substances of unknown toxicity. For the correct and safe execution of the methods, it is essential that laboratory personnel follow standard safety procedures for the handling of hazardous materials.

 

GENERAL SPECIFICATIONS Electrical: 110V AC nominal (+10%), 50/60 Hz 220, 240V AC, 50/60 Hz Power Consumption: 50W Optics: Detector: model 928;

wide range general purpose, 190-930nm Optional Detectors: model 955; UV enhanced, wide-range, 190-930nm model EMI9783B; narrow range furnace/hydride application, 165-600nm Lenses: Supracil - amorphous silica Monochromator: 0.25m Ebert mount Grating: 32nm x 27nm; 600 grooves/mm Wavelength adjustment: 3 digit mechanical, 0 to 1000nm +1 nm Reproducibility: +0.2 nm Resolution: variable slit - 2Å, 7Å, and 20Å Operating Modes: Absorbance/Emission: -0.0820 to 3.2000 Concentration: to 5 significant digits Integration Period: 0.5 to 10 seconds Screen Refresh : 0.5 to 1.5 seconds Recorder Output: 1V/ABS (-0.08 to 3.2V) Background Correction: In-line Deuterium Arc Giant Pulse (Self-reversal) Hollow Cathode Lamps: Dimension: 1.5" OD Striking Voltage: 500V Lamp Current: 0 to 18 mA average current Duty Cycle: 25% Modulation Frequency: variable; 33 to 200 Hz (142 Hz Norm.) Burner Assembly: Design: Polyethylene Pre-mix chamber, glass impact bead dispersion Burner Head: Titanium; air-acetylene head - 4" x 0.026" single slot (nitrous oxide head - 2" x 0.019" single slot) Adjustments: Horizontal g Performance: Average Noise (at 3σ): 0.0018 ABS (Cu at 324.7nm, 7Å slit, 5 sec. int.) Sensitivity: see specific element chart (Sect. 4) Reproducibility: <+5%.

 

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210 / 211VGP ATOMIC ABSORPTION SPECTROPHOTOMETERS 220GF GRAPHITE FURNACE & 220A

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