High accuracy in-situ phosphate measurement
The Cycle P methodology is based on US EPA standard methods and combines precision fluidics with state-of-the-art optics to provide unparalleled precision and accuracy. Ideally suited for unattended monitoring the Cycle P includes pre-mixed onboard reagent cartridges and onboard calibration standards.
- Robust: Excellent anti-fouling capability provided by copper mesh screens and 10 µm stainless steel intake filters
- Accurate: Nanomolar resolution and scattering insensitive optical cell
- Cost Effective: Over 1000 samples including onboard spike calibration for QA/QC, typical deployment duration of three months, reducing field costs
|Height (w/handle)||56 cm|
|Weight in air||6.8 kg (w/ reagents)|
|Weight in water||0.37 kg|
|Temperature *1||1 … 35 °C|
|Input||10 … 18 VDC|
|Current draw||2.0 A max; 125 mA avg|
|Data output||RS-232 or SDI-12|
|Sample rate||2 per hour|
|Data memory||1 GB|
|LED wavelength||870 nm|
|Linearity||equal or greater than 95% R2|
|Detection limit, three standard deviations of 18 MOhm water||equal to or less than 0.075 µM
equal to or less than 0.0023 mg/L PO4-P
|Quantification limit, ten standard deviations of 18 MOhm water||equal to or less than 0.25 µM
equal to or less than 0.0077 mg/L PO4-P
|Standard deviation of standard solution of 2.6 µM||equal to or less than 0.05 µM
equal to or less than 0.0015 mg/L PO4-P
|Range, nominal *2||0 … 10 µM
0-0.3 mg/L PO4-P
|Note:||*1 Both storage and operating temperature for sensor and reagent cartridges.
*2 Higher range is possible (0 … 40 µM, 0 … 1.2 mg/L PO4-P) but is outside specifications
Units: M = moles per liter.
mg/L PO4-P refers to mg of atoms phosphorus per liter measured in the form of reactive phosphate.
ppm ~ mg/L, ppb ~µg/L
Specifications are subject to change without notice.