WGH6440 Flame Photometer, K/Na/Li/Ca Measurement (CAT#: STEM-BC-4150-ZJF)

The WGH6440 is a four-element flame photometer for potassium, sodium, lithium, and calcium. It measures element concentration from the intensity of characteristic flame emission. The instrument can display up to three elements in any selected combination at one time. Its LCD and menu-operated keyboard support convenient method setup. Automatic correlation calculation assists with calibration and curve assessment. Standard curves can be saved for repeated analytical use. Single-point correction provides an additional option for routine calibration adjustment. Flame intensity can be selected in advance, and flame-out protection safeguards operation. A moisture separator and RS232 interface support stable gas handling and connection to a computer or printer.

Power supply: 220 V, 50 Hz
Rated power: 250 W
Display: LCD
Measured elements: K, Na, Li, and Ca
K range: 0-100 µg/mL
Na range: 0-100 µg/mL
Li range: 0-100 µg/mL
Ca range: 0-1000 µg/mL
K detection limit: ≤0.004 mmol/L
Na detection limit: ≤0.008 mmol/L
Li detection limit: ≤0.015 mmol/L
Ca detection limit: ≤0.050 mmol/L
K linearity error: ≤0.005 mmol/L
Na linearity error: ≤0.03 mmol/L
Li linearity error: ≤0.02 mmol/L
Ca linearity error: ≤0.07 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%
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

Four-element analytical capability
Three-element simultaneous display
Calcium and lithium measurement
Automatic correlation calculation
Standard-curve storage
Single-point correction
Protected flame operation
PC software compatibility

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