Shopping Cart

Your cart is empty.

Your cart is empty.

Apera Instruments AI4101 DO803 Luminescent Optical DO Probe (10-ft Cable Length)

5.0 Write Review
Free shipping on orders over $29.99

$615.00

$ 99 .00 $99.00

In Stock
  • Replacement probe for Apera DO850/DO8500 Optical DO Meter
  • Adopts state-of-the-art optical technology, no oxygen being consumed during tests
  • No need for stirring or solution adding
  • Fast response time, get stable readings within 1 minute
  • Sensor cap has 8000 hours of service life.


Apera Instruments DO803 Luminescent Optical DO Probe with 1o-ft length is the replacement optical DO probe for Apera DO850 and DO8500 Portable Optical DO meters. The probe adopts state-of-the-art optical DO sensor, which has significant advantages compared to the traditional galvanic/polarography probes. The Optical DO probe does not consume oxygen in the liquid, hence there is no requirement for water flowing speed. Just insert the probe in the liquid, and get the readings when it's stable -- as simple as measuring pH. It takes only 1 to 3 minutes for reading stabilization. Frequent calibration is not necessary. Calibration only takes 1-2 minutes.