pH/ORP Meter

Description

Introduction to pH Measurement

We sell PH Meter Bangladesh online merket. pH meter is an instrument used to measure acidity or alkalinity of a solution – also know as pH. pH is the unit of measure that describes the degree of acidity or alkalinity. It is measured on a scale of 0 to 14. PH Meter Bangladesh

The quantitative information provided by the pH value expresses the degree of the activity of an acid or base in terms of hydrogen ion activity. The pH value of a substance is directly related to the ratio of the hydrogen ion [H+] and the hydroxyl ion [OH-] concentrations. If the H+ concentration is greater than OH-, the material is acidic; i.e., the pH value is less than 7. If the OH- concentration is greater than H+, the material is basic, with a pH value greater than 7. If equal amounts of H+ and OH- ions are present, the material is neutral, with a pH of 7. Acids and bases have free hydrogen and hydroxyl ions, respectively. The relationship between hydrogen ions and hydroxyl ions in a given solution is constant for a given set of conditions, either one can be determined by knowing the other.

pH Measurement

A rough indication of pH can be obtained using pH papers or indicators, which change color as the pH level varies. These indicators have limitations on their accuracy, and can be difficult to interpret correctly in colored or murky samples. PH Meter Bangladesh

WHAT DOES THE TERM “PH” MEAN?

The term pH is derived from “p,” the mathematical symbol for negative logarithm, and “H,” the chemical symbol for Hydrogen.
More accurate pH measurements are obtained with a pH meter. A pH measurement system consists of three parts: a pH measuring electrode, a reference electrode, and a high input impedance meter. The pH electrode can be thought of as a battery, with a voltage that varies with the pH of the measured solution. The pH measuring electrode is a hydrogen ion sensitive glass bulb, with a millivolt output that varies with the changes in the relative hydrogen ion concentration inside and outside of the bulb. The reference electrode output does not vary with the activity of the hydrogen ion.

The pH electrode has very high internal resistance, making the voltage change with pH difficult to measure. The input impedance of the pH meter and leakage resistances are therefore important factors. The pH meter is basically a high impedance amplifier that accurately measures the minute electrode voltages and displays the results directly in pH units on either an analog or digital display. In some cases, voltages can also be read for special applications or for use with ion-selective or Oxidation-Reduction Potential (ORP) electrodes.

pH Electrodes

pH electrode technology has not changed much in the past 50 to 60 years. With all the technological advancements of the last 30 to 40 years, pH electrode manufacturing remains an art. The special glass body of the electrode is blown to its configuration by glass blowers. Not a terribly advanced nor “high tech” process but a very critical and important step in the electrode manufacturing. In fact, the thickness of the glass determines its resistance and affects its output.

Temperature Compensation

Temperature compensation is contained within the instrument, because pH electrodes and measurements are temperature sensitive. The temperature compensation may be either manual or automatic. With manual compensation, a separate temperature measurement is required, and the pH meter manual compensation control can be set with the approximate temperature value. With automatic temperature compensation (ATC), the signal from a separate temperature probe is fed into the pH meter, so that it can accurately determine pH value of the sample at that temperature.

Buffer Solutions

Buffers are solutions that have constant pH values and the ability to resist changes in that pH level. They are used to calibrate the pH measurement system (electrode and meter). There can be small differences between the output of one electrode and another, as well as changes in the output of electrodes over time.

Therefore, the system must be periodically calibrated. Buffers are available with a wide range of pH values, and they come in both premixed liquid form or as convenient dry powder capsules. Most pH meters require calibration at several specific pH values. One calibration is usually performed near the is potential point (the signal produced by an electrode at pH 7 is 0 mV at 25°C), and a second is typically performed at either pH 4 or pH 10. it is best to select a buffer as close as possible to the actual pH value of the sample to be measured. PH Meter Bangladesh. So so so so. So so so so

Retail and Wholesale Policy PH Meter Bangladesh:

Any Buyer can buy any product on Retail price and Wholesale price. Retail and Wholesale price depends on the ordered quantity. Our all product price divided into four scales according to quantity. For example, if any buyer buys 100 pcs resistor he/she can buy only 13 Taka. If he/she buys more than 1000 the price is 12 Taka.

Products Delivery Policy:

We ship your product anywhere in Bangladesh. According to the Shipment area, the shipping prices will set. The Shipment price between 50 Taka to 100 Taka. We ship your order by E-courier, shundarban, S.A poribahone, etc. So so so so so so so so. S so so so so so so  so. S. So so so so so so so so. S so 

You can get delivery from our wire house with a delivery charge. When you place an order please mention your specific address and mobile number. So so so 

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We support Bkash and Rocket payment. In Dhaka city, we support cash on delivery.

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Jadu Bazar always sells the best quality product. When you receive your product please check properly if any product has any problem please make a complaint. Our administration department contracts with you. Jadu Bazar doesn’t take any complaint after delivery complete. So so so so so so so so. S

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If any product is not available in our store but is available in the international markets like Amazon, Ebay, Aliexpress and Alibaba. We will take orders by phone call. For international sourcing products, we must give 100 present advances. After giving your order place you will get your product 20 days later.

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We are always providing the best quality Scientific Laboratory Equipment. We always try to supply our clients with the original Brand & Quality tested products with service; Scientific Laboratory equipment in Bangladesh online store – www.jadubazar.com. So so so so so so so so. S so so so so so so  so. S. So so so
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