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Visit for Information on the Corona-virus disease (COVID-19) Pandemic.
If you do not understand these 3 words, google them: symptom, symptomatic and asymptomatic. Some of us were ignorant at Clarkson but not anymore.

How many young people under the age of 18 have died while having the Corona Virus in the state of California in the USA with a population of 39.5 million?
CDPH shows 104 as of May 9, 2023. This is 0.0002% of the California population. Have a health problem or over 80, yes it is dangerous but so is the Flu and Pneumonia.
Sweden with 10 million people never had any mask mandate and had the same results as the state of California! - - References: CDPH , Flu and Sweden

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Hanna HI9828 Multiparameter Meter Information

We offer a 20% discount on Hanna HI9828 Multiparameter Meters. Click on the links below for information.  E-mail for additional help and to place orders.

HI 9828 Multiparameter Meter
The HI 9828 Multiparameter meter that can measure up to 12 parameters. It is waterproof, resistant and easy to use. IT is the ideal solution for field measurements of lakes, rivers and sea. Thanks to the microprocessor based multisensor probe, it is possible to measure all the parameters necessary to evaluate the water quality, as dissolved oxygen saturation percentage, conductivity, seawater specific gravity and other parameters that ensure life in water as pH and temperature.
It is also possible to use the same probe with different meters without the need to recalibrate the system. Up to 12 parameters can be enabled and seen on the large graphic display with backlight. All readings can be memorized and associated to a precise sampling area thanks to the i-Button© system and the remarks that the operator can insert before or during measurements. The same data can be plotted on the meter and
also downloaded to a PC by means of USB connector and HI92000 Windows® compatible application for successive elaborations. The setting menu can be protected by password to avoid not authorized modifications and the help function is always available to explain the selected function, operation or message.
The main features of HI9828 series includes:
• Measurement of dissolved oxygen, pH, ORP, conductivity and related parameters,
  temperature, atmospheric pressure and seawater specific gravity
• Field replaceable sensor modules for DO, EC and pH/ORP
• 5 interface languages: English, Spanish, French, Portuguese, Italian
• Graphical display with backlight
• GLP features
• i-Button© system to remark the sampling area
• Up to 60,000 samples stored in 100 different lots
• Four C size Ni-MH rechargeable batteries
• Batteries recharged from mains power supply and from cigarette lighter
• Password protection