Varian second-hand imported atomic absorption repair

1. Varian micro desktop CT/DR/RTR (may correspond to the 220Z model)

Weight: Approximately 195 kilograms (± 5%)

Size:

Closing state: 1524mm (length) × 521mm (depth) × 762mm (height)

Open door status: 1824mm (length) x 521mm (depth) x 762mm (height)

2. Varian Micro Focus Industrial CT/DR/RTR (BIR 200/225 model)

Weight: Approximately 1245 kilograms (± 5%)

Size:

Length: 1755mm

Depth: 1476mm

The height is not clear, but the system is integrated into the optical table, and the parameters such as turntable travel are detailed in the technical documentation.

Notes:

Data source: The above parameters are from the professional equipment introduction of the Instrument Information Network and are applicable to industrial or medical CT systems.

The main parameter specifications of the Varian 220Z atomic absorption spectrometer are as follows:

Core performance parameters

Wavelength range: 185-900 nm, covering the ultraviolet to near-infrared spectral region.

Sensitivity:

Flame method: relative standard deviation (RSD)<0.3%; <>

Graphite furnace method: RSD<2%. <>

Detection limit:

Flame method: capable of detecting concentrations at the ppm level;

Graphite furnace method: capable of detecting trace elements at ppb level (specific values need to be combined with element types).

Characteristics of graphite furnace system:

Sample injection reproducibility: RSD<0.5%; <>

Supports dual-mode detection of peak height and peak area.

System configuration requirements

Gas source demand:

Flame mode: Compressed air (50 psi), acetylene (11 psi), or nitrous oxide (N ₂ O, 50 psi);

Graphite furnace mode: argon or nitrogen (140-200 kPa), equipped with a cooling water system (water temperature 20-25 ℃).

Vacuum system: A dedicated vacuum pump (such as a matching front-end pump) is required, with parameters including:

Vacuum oil type: 45 # oil, filling amount ≥ 0.4 L;

Non vibration pressure range:<6 × 10 ⁻³ -3 × 10 ⁻³ hpa=''>

Weight:<15 kg=''>

Power supply: 220-250 V AC.

Key consumables specifications

Graphite tube type:

Coated graphite tube: weighing 200g, suitable for trace/ultra trace analysis;

Platform graphite tube:

Bone platform (model 6310001300), price range 3300-6200 yuan;

Universal type (such as LTT-PT), compatible with longitudinal heating design.

Resolution: 0.3 nm, ensuring high-precision element separation.

Application scenarios

Applicable fields: environmental testing, food and drug safety (pesticide residues/heavy metals), geological metallurgy, scientific research and education, etc;

Typical samples: liquid, solid (requiring pre-treatment), supporting automatic sampling system.

Comparison of Parameters between Flame Method and Graphite Furnace Method

Sensitivity (RSD) of detection mode and requirements for gas source detection limit

Flame method<0.3% ppm=''>

Graphite furnace method<2% ppb=''>

remark

Structural design: Compact body, requiring a reserved experimental table space of ≥ 1m ² and equipped with ventilation facilities;

Upgrade compatibility: Supports accessory extensions such as hydride generators.

It is recommended to obtain a complete technical manual from the supplier to confirm the specific element detection limits and special application configuration parameters.