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|Power:||3*1.5V(AG-13) Button Cell Battery||Shut-off:||Auto|
|Waterproof Grade:||IP65||Certificates:||CE And ROHS|
A pH meter is a handheld device that tests water for its level of acidity versus base or alkalinity. If water is equally acidic and alkaline, it registers as neutral on the meter. The pH meter utilizes a standard pH scale for measuring these aspects of water quality. The level of concentration of positive hydrogen ions in the water determines the result.
The acidic side of the pH scale runs from 0 to 6.9, with 7.0 being neutral. Because 7.0 is neutral, 6.8 is considered only slightly acidic. Similarly, 7.2 is only slightly alkaline, with the base scale running to 10.0 or higher. Generally speaking, acidic water is soft while alkaline or base water is hard.
Lacking a pH meter, water is pH-tested by adding chemical agents to a water sample. Depending on the agents used, a bright yellow result could indicate highly acidic water; blue, neutral; and deep brown, alkaline water. Hues are interpreted as positions along the scale.
Liquid pH tests can be messy and they do require some guesswork as to the reading. Conversely, a pH meter is a digital device with a connected glass electrode probe. The probe is placed into the water to be tested, and the pH of the water is digitally displayed. It takes mere seconds and is far more accurate, assuming the meter has been properly calibrated.
pH meters range from simple and inexpensive pen-like devices to complex and expensive laboratory instruments with computer interfaces and several inputs for indicator and temperature measurements to be entered to adjust for the variation in pH caused by temperature. The output can be digital or analog, and the devices can be battery-powered or rely on line power. Some versions use telemetry to connect the electrodes to the voltmeter display device.197–215
Specialty meters and probes are available for use in special applications, such as harsh environments and biological microenvironments.There are also holographic pH sensors, which allow pH measurement colorimetrically, making use of the variety of pH indicators that are available. Additionally, there are commercially available pH meters based on solid state electrodes, rather than conventional glass electrodes
pH:0.01-14.00ph ph meter
|Automatic temperature compensation||0-80℃|
|Battery||3*1.5V(AG13 button cell)|
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