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10 AU

Measurements are extremely stable with stability measured in months or weeks as opposed to days or hours. Watertight filter paddles enable quick change of excitation and emission filters so a variety of compounds can be easily measured on-site.

Optical kits with appropriate filters and lamps are available for a wide range of applications and can be easily installed in the field or lab. Individual filters and lamps can also be purchased for customized applications.

  • Exceptional Sensitivity

  • Automatic or Manual Ranging
  • Analog and Digital Output
  • Field Installable Optical Kits
  • Easy to Read LCD Display


10AU Detection Limits

Extracted Chlorophyll a

0.025 µg/L using EPA Method 445.0

Rhodamine WT Dye

0.01 ppb RWT in potable water

Fluorescein Dye

0.01 ppb Fluorescein in potable water

10AU Linear Range

Extracted Chlorophyll a

0 - 250 µg/L

Rhodamine WT Dye

0 - 250 ppb

Fluorescein Dye

0 - 250 ppb


10AU Electrical Specifications

Light Source

Lamp (4 watts, 8000 hours lamp life)


PhotoMultiplier Tube; Standard (300-650 nm), Red (185-870 nm)

AC Power

100-130 V; 200-240 V, 50/60 Hz, 30 watts

DC Power

11-16 V; 2.5 amperes

Digital Output

100% ASCII data output via RS-232 at 4800 or 9600 bps

Analog Output

0.1, 1, 2, or 5 volts

10AU Physical Specifications


12.6 kg (28.5 lbs)


24 cm (9.45 in)


55 cm (21.65 in)


34 cm (13.39 in)

Operating Temperature

0-55° C, 32-131° F (ambient)