The Sherwood Model 420 Flame Photometer is a high-performance, dual-channel flame photometer engineered to enhance productivity and analytical precision in the determination of sodium (Na) and potassium (K) concentrations. Evolved from the renowned Model 410, the 420C introduces advanced automation, faster calibration, and superior stability—making it the ideal instrument for clinical, industrial, and research laboratories.
With features such as auto-flame ignition and optimization, internal lithium referencing, and dual simultaneous measurement, the Model 420 significantly improves sample throughput and data accuracy, while maintaining Sherwood’s hallmark reliability and ease of use.
Available Configurations
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Model 420C (475 42 000)
Supplied with a mixed calibration concentrate containing 140.0, 5.00, and 1.50 mmol/L of Na, K, and Li, making it ideal for clinical and research environments. -
Model M420 Industrial (475 42 100)
Delivered with individual 1000 ppm calibration concentrates for Na, K, and Li, suited for industrial and environmental analysis applications.
Key Features & Benefits
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Dual Channel Operation: Simultaneous calibration, measurement, and display of sodium and potassium results.
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Internal Lithium Reference: Compensates for flame fluctuation to ensure stable, precise readings (optional toggle on/off).
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Automatic Flame Optimization: Reduces setup time with auto ignition and flame adjustment.
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High Throughput: Rapid calibration and measurement enhance sample productivity.
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Continuous and Peak Modes: Choose between real-time display or automated stable reading detection.
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Smart Firmware Control: Built-in blanking, calibration, and measurement routines prevent operator error.
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RS232 Output: Direct data connection to printers or computers for efficient result recording.
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Automation Compatibility: Fully compatible with Sherwood’s Model 860 Autosampler and Model 805 Continuous Flow Diluter for unattended operation.
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Stable Flame Design: Proven reliability from the Model 410 platform with refined engineering for optimal performance.
Applications
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Clinical chemistry laboratories
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Industrial process control
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Environmental monitoring
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Food and beverage quality assurance
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Pharmaceutical and agricultural testing
Why Choose the Sherwood Model 420 Flame Photometer?
The Model 420 Flame Photometer offers unmatched performance, precision, and ease of use in the analysis of sodium and potassium. Whether in a clinical or industrial setting, it provides fast calibration, reliable accuracy, and the flexibility to integrate with automated sample-handling systems, ensuring consistent results and improved laboratory efficiency.