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What are PH Meters?

10/31/2013 4:12:48 PM | by Anonymous

Meters: Ph

PH meters are handheld devices that test water for its level of acidity versus the base or alkalinity. If the water is equally acidic and alkaline, it will be registered as neutral on a PH meter. The PH Meter uses a standard pH scale for measuring the aspects of water quality. The concentration level of positive hydrogen ions in the water will determine the result of the water quality.

 

The scales range from 0 to 10 and above. The acidic side of the pH scale runs from 0 to 6.9, 7.0 being neutral. PH level of 7.0 is neutral thus meaning that 6.8 is considered only slightly acidic. Similarly, pH level of 7.2 is only slightly alkaline, with the base scale running to 10.0 and higher. Acidic water is generally soft whereas alkaline or base water is usually hard.

 

Without a pH meter, water is tested by adding chemical agents to a water sample to decide if it is acidic, neutral or alkaline. It is dependent on the agents utilized to decide the ways the results show the water quality. Bright yellow results could indicate that the water quality is high acidic, blue for neutral and deep brown colour for alkaline water quality. The hues are interpreted as positions along the pH scale.

 

PH tests in liquid form can get quite messy moreover they require some kind of guess work as to the reading of the result. Conversely, a pH meter is a digital device with a glass electrode probe connected to it. The probe is an essential part of the pH meters. It is a rod like structure made up of glass with a bulb at the bottom of the probe. The bulb is a sensitive part of the probe that contains the sensor. It is important not to touch the bulb by hand and always clean it with the help of an absorbent tissue paper with soft hands. Extra caution need to taken and ensure that the tissue does not rub against the glass bulb in order to avoid creation of static.

 

The probe is placed into the water that is to be tested and the pH of water is later digitally displayed. This method only takes up mere seconds and is way more accurate as compared to pH tests in liquid form. This is based on the assumption that the pH meter has been properly calibrated.

 

There are many types of pH meters, most common varieties will usually come with calibration liquids known as the buffer solutions. These solutions are generally predetermined to be highly acidic of pH 4.01, neutral of pH 7.01 and alkaline or base at pH 10.01.

 

Calibration is done via the testing of the liquids with the probe and adjusting the meter’s readings. A pH meter should be recalibrated every month to achieve the best and most accurate results. When not in use, the tip of the probe should always be stored in acidic solutions. If the probe dries out, it will need a replacement.

 

Water quality controllers very commonly utilize pH meters. Other types of pH meters also test solids like soil or even foods. Many aquarists also use pH meters in lieu of the liquid testing. The probe can be permanently placed in an aquarium sump and the meter. It can also be mounted inside the aquarium stand or on a wall nearby. It is important to have the right pH levels as different marine life animals. For example, freshwater cichlids and saltwater fish requires alkaline water whereas the African nile fish thrives mainly in acidic freshwater. It is fairly important to ensure the optimal pH for all the fishes as the pH fluctuation can cause illness or even death upon the fishes. Thus, it is a paramount to monitor the pH closely. PH meters are generally inexpensive and are quite handy for anyone with the need to test for water quality or conduct water quality controls. They are available for sale in many tropical fish stores or can be purchased even online.

 

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