581-S type photoelectric colorimeterDetailed product description：

581-S photoelectric colorimeter

Features:
Clear digital display; High precision. The instrument does not require adjustment, with direct concentration reading, easy operation, and rapid testing.

Indicator:
Wavelength range: 400-700nm
Range: T.0-100% A.0-1.999; C.0-199.9
Sensitivity: ≥ 0.01 absorbance (measured by injecting 0.001% potassium dichromate solution into a 10mm colorimetric dish or cup using a No. 42 color filter)
T/A: Conversion accuracy: ≤± 0.005A (at 0.5A)
Stability: After preheating for 15 minutes, zero drift ≤ 1.5% T/3min
Reproducibility: Reading error of the same solution ≤ 0.5% (T)
Power supply voltage: AC: 220V
Instrument weight: 12 kilograms External dimensions: 350 × 300 × 140 millimeters