The NKE CPHYLL Aquaread Chloride Electrode is constructed from dense ABS/POM plastics and aluminium. It features robust sapphire lenses for the highest optical performance and scratch resistance. It is a fixed response fluorometer, meaning it excites the chlorophyll in the water at a fixed wavelength (470nm) and then measures the subsequent emitted fluorescence (>630nm).

• Chlorophyll is the green pigment found in plants, and it’s vital for photosynthesis. Measuring the chlorophyll concentration in water is important to estimate the abundance of phytoplankton. If a high level of chlorophyll is detected, it is an indication that a high level of phytoplankton is present in the water.

• Installing the Chlorophyll sensor into an Aquaprobe is a straightforward process. First, unscrew the blanking plug from an appropriate aux socket. Then apply some of the provided silicon grease to the sensor thread and screw in the sensor. After installation, full calibration is required.

• Part of our ethos at Aquaread is “ease of use”, which is why we have simplified and automated the calibration process as much as possible. The chlorophyll sensor is calibrated at 2 points. A zero point and a 500µg/l rhodamine dye point. A stock solution of rhodamine dye is provided, and a small dilution of the stock is required to make the 500µg/l solution.
• Once your solution is made, the calibration involves placing the probe into the solution and selecting the correct calibration option from the menu. A calibration report is saved when complete.

• There can sometimes be a difference between measured values with the sensor and laboratory data when taking measurements at a particular site. These differences are caused by a number of factors.
• It is possible to apply a multiplier to the data obtained from our sensor in order to make it better correlate with lab data for that particular site. To do this, we use a grab sample factor. We can calculate this factor by dividing the average grab sample value (measured in the lab) by the average value measured by our chlorophyll sensor.
• This is a great addition to the software when trying to correlate new data with historic readings from the same site.

• Trying to accurately determine the number of cells present using fluorometric sensors is an indirect method of counting, thus not as accurate as direct cell counts that can be performed in a laboratory setting. Various external factors can affect the readings, for example, other microbiological species and compounds that fluoresce at similar wavelengths, differences in the fluorescent response between various species of phytoplankton, temperature, ambient light, and turbidity.
• For these reasons, chlorophyll measurement taken directly in the field is intended for qualitative data collection over time to monitor changes in trend, not quantitative analysis.

NKE Aquaprobe-2000 Water Monitoring Probe

The NKE Aquaprobe-2000 Water Monitoring Probe is the smaller of our advanced portable multiparameter water monitoring probes. It comes with a range of standard sensors included, it also offers some customisation options that allow you to add even more sensors to the probe. All of our probes are constructed from tough marine grade aluminium that has been hard anodised, making it suitable for use in both fresh and salt waters

Click image for more info

NKE Aquaprobe-5000 Water Monitoring Probe

The NKE Aquaprobe-5000 Water Monitoring Probe is the larger of our advanced portable multiparameter water monitoring probes. It comes with a range of standard sensors included, and much like its smaller counterpart it offers more customisation options that allow you to add extra sensors to the probe. All of our probes are constructed from tough marine grade aluminium that has been hard anodised, making it suitable for use in both fresh and salt waters.

Click image for more info

NKE Aquaprobe-7000 Water Monitoring Probe

The NKE Aquaprobe-7000 Water Monitoring Probe is designed for long term deployment utilising a central cleaning system to keep the fitted sensors clean reducing the effects of bio-fouling common in extended deployments. The probe comes with all of our standard parameters including optical dissolved oxygen, it also features 6 user configurable auxiliary sockets allowing you to add multiple specialist sensors to the probe. The NKE Aquaprobe-7000 Water Monitoring Probe is capable of measuring up to 17 individual parameters at once.

Click image for more info

NKE Aquaprobe-6000 Water Monitoring Probe

The NKE Aquaprobe-6000 Water Monitoring Probe can be used for comprehensive spot monitoring as part of a package or it can be used in permanent deployments thanks to its new, much smaller self cleaning mechanism. It features a diameter of only 58mm (the same size as the AP-5000) making it our smallest self cleaning Aquaprobe to date.

Click image for more info