WGH6420 Flame Photometer, K/Na Analysis with Curve Calibration (CAT#: STEM-BC-4146-ZJF)

The WGH6420 is a flame photometer for measuring potassium and sodium concentrations. It applies flame emission spectroscopy to convert element-specific light intensity into quantitative results. The instrument is intended for samples containing alkali metals within the stated concentration range. An LCD displays measured values and instrument parameters clearly. Menu-driven keyboard operation provides direct access to calibration and analysis functions. Correlation coefficients are calculated automatically to support calibration evaluation. Users can preset flame intensity and store standard curves for repeated testing. Flame-out protection and a moisture separator support stable and safe operation. RS232 communication allows results to be transferred to a computer or compatible printer.

Power supply: 220 V, 50 Hz
Rated power: 250 W
Display: LCD
Measured elements: K and Na
K range: 0-100 µg/mL
Na range: 0-100 µg/mL
K detection limit: ≤0.004 mmol/L
Na detection limit: ≤0.008 mmol/L
K linearity error: ≤0.005 mmol/L
Na linearity error: ≤0.03 mmol/L
Short-term stability: Relative maximum indication change ≤3% within 15 s
Long-term stability: Relative maximum indication change ≤15% over six measurements at 1 min intervals
Repeatability: ≤3% for seven independent measurements of the same standard solution
Calibration methods: Piecewise-linear, linear, and curve methods as listed
Sample uptake rate: <6 mL/min
Communication: RS232
Net weight: 10 kg
Product dimensions: 400 × 275 × 460 mm

Dual-element quantitative analysis
Curve-based calibration option
Automatic correlation calculation
Stored standard curves
Flame-size preset function
Flame-out protection
Moisture-separated gas path
External data output

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