Products

DropletSens™

Phosphate Probe

Real-time, high-frequency, lab-quality phosphate monitoring.

Specifications PDF Enquire now

Features

Based on established Molybdenum Blue test
Dissolved (ortho-)phosphate determined autonomously
Fully quantitative
On-device standard for performance QC

Specifications

Analytical

Range: 0 - 8 mg/L PO₄-P
Detection Limit: 0.01 mg/L PO₄-P
Measurement Frequency: up to every 10 seconds
default setting is every 15 min

Operational

Temperature range: 0 - 35 °C
Maximum deployment depth: 1 m
Power consumption* * for continuous use measuring every 15 min: 1.5 W

Physical

Height: 400 mm
Width: 150 mm
Weight: 8.2 kg

Communications

Connectivity: RS232/RS485, Modbus, Bluetooth, SCADA compatible
Data output: Remote streaming

Specifications PDF

Maintenance

Reagent change after 3 months if in continuous use
Required inlet filter change frequency depends on application; typically 3 months for environmental applications (turbidity ≤250 NTU)

Applications

Process Control, Rivers, Streams & Lakes, Coastal, Agriculture, Aquaculture, Industrial, Environmental Monitoring, Estuary Monitoring, Catchment Monitoring, Effluent Monitoring, Nutrient Mapping, Nutrient Recovery, Nutrient Trading, Nature-Based Solutions Effectiveness Monitoring.

Diagram — Nanodroplet microfludic approach for DropletSens™ platform - compact liquid reagent based sensors.

Why phosphate?

Phosphate is monitored in the water network and watercourses to better understand and reduce the environmental impact caused by sewage treatment outflows, storm overflows and agricultural run-offs, which can result in excessive algal growth and fish deaths. This pollution data can be used to guide investment decisions, monitor effectiveness of remedial measures such as wetlands, and support nutrient-trading schemes to unlock housing developments.

Apart from the dissolved ‘reactive phosphorus’ or ‘ortho-phosphate’ which DropletSens™ measures colorimetrically, there is also suspended or bound phosphorus, with all phosphorus compounds together adding up to ‘Total Phosphorus’ or ‘Total-P’. At present there are no electrochemical or spectral approaches that can measure ortho-phosphate.

Phosphate discharge limits are in place in most countries to protect the receiving ecosystems. Increasing focus is also placed on Phosphorus recovery, as it is a limited resource and required for fertilizer production.