Environmental Analysis & Electrochemistry
Multiparameter pH/ORP/EC/DO/Pressure/Temperature Waterproof Meter
Hanna Instruments provides a comprehensive solution for measurement in the field with the HI98194 multiparameter meter. This IP67 rated waterproof portable meter measures up to 12 different water quality parameters: the multi-sensor probe directly measures pH, ORP, conductivity, dissolved oxygen, temperature, and pressure. Additional parameters such as pH-mV, total dissolved solids, resistivity, seawater, specific gravity, and percent saturation are calculated and displayed on the graphic, dot matrix display.
The HI7698194 multiparameter digital probe that is supplied with the HI98194 features a Quick Connect DIN connector. This type of connector makes attaching and removing the probe simple while also securing a waterproof connection to the meter. The rugged probe is IP68 rated waterproof for continuous immersion in water and has a removable, weighted shield to protect all sensors. The sensors are automatically recognised once connected, and replacement is quick and hassle- free with field-replaceable, screw type connectors that are colour coded for easy identification.
For effortless calibration in the field, the HI98194 features Quick Calibration, an efficient means of achieving accurate, reliable measurements. With Quick Calibration, a speedy, single-point calibration for pH, EC, and DO sensors can be performed with one solution. Standard calibration is also available for users to calibrate single parameters at multiple points.
The powerful logging capability of the HI98194 allows users to store up to 45,000 continuous or log-on-demand samples. Logging intervals can be adjusted from every one second to three hours. Once field measurements are complete, users can easily transfer logged data to a PC with a micro USB cable and the supplied software.
Comprehensive GLP data is accessible any time to view on the meter or once data is transferred to a PC. For confidence in readings, GLP data assures users of the probe calibration data including date, time, buffers used, and offset and slope characteristics.
The meter itself is enclosed in an IP67 rated waterproof casing that can withstand immersion in water at a depth of one meter for up to 30 minutes. The fitted rubber keypad has dedicated keys that help users instinctively navigate through setup, calibration, and measurement menus. With complementary virtual keys, the HI98194 interface is intuitive for users at any level of experience.
The HI98194 comes as a complete system, allowing users to start taking measurements as soon as they receive it. All necessary accessories are supplied along with the meter and probe, packaged in a rugged, thermoformed carrying case. The inside compartment securely holds the components to provide years of protection and use.
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Get Biochemical Oxygen Demand Determination Results Directly on your PC Avoiding Temperature Alterations During Incubation
The innovative BOD EVO from Velp Scientifica is the most convenient way to get reliable results for water and wastewater quality control. The system is based on a wireless protocol and results are clearly displayed through the user-friendly BODSoft™ software without any extra activities: data management and reporting become incredibly intuitive.
The exclusive dedicated software BODSoft™ allows the operator to monitor and record the analysis progress thanks to automatic transmission of the data from the sensor to the Wireless DataBox™ connected to the PC. BOD EVO Sensor ensures a high reliability as there is no need to open the door of the incubator thus eliminating the risk of internal temperature variations.
Measurement is available on 4 different scales - 90, 250, 600 and 999 ppm BOD and higher values can be measured by diluting the sample.
BOD EVO Sensor System is the Velp all-in-one solution for BOD analysis and includes a 6-position stirring station with BOD Sensors, dark glass bottles, alkali holders and stirring bars. The Stirring Station is extremely simple to handle and its reliability is guaranteed by Velp experience in stirring solutions.
BOD EVO Sensor System is designed to be easy to handle and space saving. In fact, up to 5 stirring stations for up to 30 samples can be placed in a Velp incubator (FOC 225E or FOC 225I) simultaneously.
BOD EVO, an impressive step ahead in Biochemical Oxygen Demand determination.
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New Evaporative Technique Improves Environmental Sample Preparation
Genevac reports on a customer paper that describes the development and advantages of a new evaporative methodology for Mass Spectroscopic (MS) analysis replacing the traditional Solid Phase Extraction (SPE) technique for preparing environmental samples.
In recent years HPLC/MS/MS and UPLC have become the sensitive and specific techniques of choice for the detection of algal toxins in water. While the majority of published studies employ SPE for preparing environmental samples for MS or UPLC analysis, using this methodology can be very time consuming.
In this paper a direct solvent evaporation methodology, using the Genevac EZ-2 evaporator, is evaluated as a means to reduce the lengthy sample preparation process prior to MS analysis and to improve efficiency.
The authors demonstrate that using the EZ-2 for their sample preparation reduces processing time, simplified sample preparation and eliminated variability in percent water of the final solution. They conclude that the direct evaporative sample preparation method offers distinct advantages over SPE by eliminating the sample clean-up step, improving reproducibility, decreasing analysis time, minimising waste generation and being more cost effective. In addition, as minimal sample handling is required using the direct evaporative methodology, this reduces the risk of cross contamination and analyte loss.
To download a copy of the customer article ‘Detection and Quantification of Algal Toxins in Surface Water’ please visit
www.spscientific.com/Articles-And-Technical-Papers/.
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