ATS 200S Multi-Channel Flame Photometer by ATS

Overview

The ATS 200S Multi-Channel Flame Photometer is a high-precision, microprocessor-controlled analytical instrument engineered for simultaneous quantitative determination of alkali and alkaline earth metals in liquid samples via atomic emission spectroscopy. Operating on the principle of flame excitation—where atomized sample aerosols are introduced into a stable air-propane flame, inducing electronic transitions that emit characteristic wavelengths—the ATS 200S detects emitted radiation at discrete spectral lines (e.g., Na 589 nm, K 766 nm, Li 671 nm, Ca 422 nm) using interference-filtered photodiodes. Its quadruple-channel optical architecture enables true concurrent measurement of Na, K, Li, and Ca without sequential wavelength switching or mechanical filter rotation, eliminating inter-channel time lag and enhancing throughput integrity. Designed and assembled in Switzerland, the system integrates embedded firmware derived from telecommunications-grade signal processing protocols to ensure low-noise analog-to-digital conversion, real-time baseline correction, and adaptive gain stabilization—critical for maintaining accuracy across variable matrix compositions encountered in environmental, clinical, and industrial laboratories.

Key Features

• True simultaneous 4-channel detection (Na, K, Li, Ca) with independent photodiode arrays and temperature-stabilized interference filters
• Optional fifth-channel configuration for Ba (50–1000 ppm) or user-defined elements via interchangeable filter modules
• Integrated air compressor with oil-free diaphragm design and pressure-regulated output (0.2–0.3 MPa), certified for continuous duty cycles up to 8 h/day
• One-touch calibration workflow supporting single-point zeroing, two-point linear calibration, and three-point non-linear curve fitting (logarithmic mode)
• On-board data logging with internal memory (≥10,000 results) and timestamped audit trail compliant with GLP documentation requirements
• Rugged aluminum chassis with vibration-damped optical bench and flame chamber isolation to minimize thermal drift and mechanical perturbation
• Universal power input (100–240 VAC, 50/60 Hz) and EMI-shielded electronics meeting IEC 61326-1 standards for laboratory electromagnetic compatibility

Sample Compatibility & Compliance

The ATS 200S accepts aqueous solutions with total dissolved solids (TDS) ≤0.5% w/v and viscosity <5 cP, including digested environmental waters, acid-extracted soils, serum/plasma dilutions (1:10–1:100), plant tissue homogenates, and industrial process liquors. Sample introduction employs a precision capillary nebulizer with adjustable aspiration rate (3–5 mL/min) and impact bead desolvation to reduce oxide interference. The system conforms to ASTM D1292 (water hardness), ISO 11885 (determination of Na, K, Ca, Mg in water), and USP (potassium and sodium content in pharmaceutical excipients). Its operational parameters—including calibration traceability to NIST SRM 3183 (multi-element aqueous standard) and built-in system suitability checks—support validation under FDA 21 CFR Part 11 when paired with optional PC-based software with electronic signature capability.

Software & Data Management

The ATS 200S communicates via USB 2.0 or RS-232 serial interface to Windows-based ATS FPControl™ software (v4.2+), which provides method storage, calibration curve management, statistical reporting (mean, SD, CV%, recovery %), and export to CSV, PDF, or LIMS-ready XML formats. Audit trail functionality logs all user actions—including method edits, calibration events, and result overrides—with immutable timestamps and operator ID tagging. Optional Ethernet connectivity enables remote monitoring and integration into centralized laboratory informatics systems. Data integrity safeguards include automatic backup on disconnect, write-protected result archives, and configurable retention policies aligned with ISO/IEC 17025 clause 7.5.2.

Applications

• Environmental testing: Quantification of Na⁺, K⁺, Ca²⁺ in surface water, wastewater effluents, leachates, and landfill extracts per EPA Method 200.7
• Agricultural analysis: Rapid assessment of nutrient cations in soil extracts (Ammonium acetate or Mehlich-3), plant tissue digests, and fertilizer formulations
• Clinical chemistry: Electrolyte profiling in serum, urine, and whole blood lysates for renal function and metabolic panel support
• Food & beverage QA/QC: Salt (NaCl) and potassium content verification in dairy, brewing wort, fruit juices, and infant formula per Codex Alimentarius standards
• Industrial process control: Monitoring of boiler feedwater hardness (Ca/Mg), cement clinker alkali content, and catalyst metal leaching in petrochemical streams

FAQ

What sample preparation is required prior to analysis?
Aqueous samples must be filtered (0.45 µm membrane), acidified to pH 24 h, and diluted to fall within the linear range (typically 1–100 ppm). Solid matrices require hotplate or microwave-assisted acid digestion (HNO₃/HF for silicates).

Can the ATS 200S be validated for GMP-regulated environments?
Yes—when operated with FPControl™ software enabled for 21 CFR Part 11 compliance (electronic signatures, audit trail, role-based access), and supported by IQ/OQ documentation packages available from ATS Technical Services.

Is external gas supply required?
No—the integrated air compressor eliminates dependency on external compressed air lines; propane is supplied via standard disposable canister (220 g, EN 417-compliant) with automatic pressure regulation and flame-out safety cutoff.

How often does the nebulizer require maintenance?
Under normal use (≤20 samples/day), the stainless-steel capillary nebulizer requires weekly cleaning with 10% HNO₃ followed by DI water rinse; replacement interval is ≥6 months or after 500 analyses, whichever occurs first.

Does the system support custom calibration curves for non-standard units?
Yes—users may define custom concentration units (e.g., mg/L as CaCO₃, meq/100g soil) and apply matrix-matched standard addition protocols directly within FPControl™ software.