AlpHa Measurement Solutions |
Optical Brighteners in Research & Education

Optical Brighteners in Research & Education

Optical brightener monitoring provides a practical and highly visual tool for research institutions and educational programs studying water quality, pollution pathways, and human environmental impact. Because fluorescent whitening agents are directly linked to household wastewater, they serve as an effective tracer for demonstrating real-world contamination dynamics in both laboratory and field settings.

AlpHa’s XC-OBS sensor utilizes patent pending optical technology with the following unique features:

  • Industry leading minimum detection limit at 0.08 ppb
  • Automatic temperature compensation
  • Analog (0 – 3 V) or digital (RS-485 MODBUS RTU) output formats
  • Options for custom OEM sonde multiparameter and stand-alone configurations

  • Minimum Detection Limit: < 0.08 ppb
  • Linearity: R2 > 0.99
  • Chlorophyll a Range: 0 to 300 ppb (µg / L)
  • Chlorophyll a Response Time:
    • Sonde: T100 ~2 seconds
    • Stand-alone: ~2 seconds
  • Temperature Range: 0 to 50°C
  • Max Pressure: 375 m 
  • LED Center Wavelength: 365 nm
  • Emission Wavelength: 445 / 21 nm
  • Input Power:
    • Sonde: 5 – 36 VDC
    • Stand-alone: 6 – 36 VDC
  • Power Consumption:
    • Sonde: 280 mW at 5 V
    • Stand-alone: 670 mW at 6 V
    • Custom Options Available
  • Warranty: 12 Months
  • Form Factor
    • Stand-alone
    • Sonde / Cartridge
    • Custom Options Available
  • Housing Material Options
    • Titanium
    • Custom Options Available
  • Thermistor Options
    • Integrated Temperature Compensation
  • Integrated Insertions
    • Custom Options Available
  • Analog
    • 0 – 3 V with UART-MODBUS
    • Custom Options Available
  • Digital
    • RS-485 MODBUS RTU
    • Custom Options Available 
  • Connectors
    • Integrated Connectors (detachable or cableless)
      • Custom Options Available 
    • Connectors with Cables (including temperature)
      • Any commercially available connectors and custom options