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Ph Meter
Ph Meter


A ph meter measures the ph of a solution utilizing glass electrodes. The electrode is made of very thin glass that allows h+ ions to pass through it. The meter measures electrical potential and converts this data into a ph reading for a sample.

Ph meter is a specific type of voltameter with a very high impedance of input channels highly suitable for potenciometric ph measurements. Voltage produced by the ph electrode is proportional to logartithm of the h+ activity. Ph meter voltameter display is scaled in such a way that the displayed result of measurement is just the ph of the solution. Commercial ph electrodes used in ph meters consist of a h+ selective membrane, and internal and external reference electrodes, usually combined in one housing.

Ph can be measured using either ph indicators (like phenolophtaleine) - in form of solution or ph strips - or using potentiometric method. Strips are very useful when all you need is 0.5-1 ph unit accuracy. When you need higher precision, ph meter is the only way to go. In potentiometric methods you measure potential difference between known reference electrode and the measuring ph electrode. The latter depends on the activities of ions you want to measure. This dependence is described by nernst equation, thus once the potential has been measured you can calculate the activity.

Ph meters range from simple and inexpensive pen-like devices to complex and expensive laboratory instruments with computer interfaces and several inputs for indicator (ion-sensitive, redox), reference electrodes, and temperature sensors such as thermoresistors or thermocouples. Cheaper models sometimes require that temperature measurements be entered to adjust for the slight variation in ph caused by temperature. Specialty meters and probes are available for use in special applications, harsh environments, etc. Pocket ph meter are readily available today for a few tens of dollars that automatically compensate for temperature.

This ph test meter is very easy to use that is again fully accurate and come with affordable range. Different sizes of ph meter that fit in either hand with clear and accurate readings and digitally displaying system are available in the market. High level of resolution, wide mv range with power requirement makes this analytical instrument is suitable for different type of analytical applications.

This ph meter eliminates guesswork and allows instant ph readings at critical moments. Universally this scientific laboratory equipment is applied for the measuring the ph measurements of different samples. In cosmetic and in the industry of detergents suitable application this ph meter is done. For the sample tests in the food processing units, water plants and in the soil this ph meter that includes water ph meter, soil ph meter, ph conductivity meter and others are very effective.



Ph Meter
PH METER
Enertech electronics introduced a digital micro controlled based ph meter equipped with international feature such as back-lit alpha numerical lcd display, rs 232 pc interface, simultaneous display of ph and temperature value, auto temperature compen ... Click here for more info
Company Name : Life-care Equipment Pvt Ltd
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PH METER-DIGITAL
Ph meters are available in two models manual temp.Compensation (mtc) and auotmatic temp. Compensation (atc) supplied with temp. Probe, with accuracy +0.01ph, combined electrode, mv indication, electrode stand, clamp and buffer tablets. ... Click here for more info
Company Name : J.r. Industrial Corporation
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PH METER
Control dynamics presents a ph meter that incorporates the latest technological advancements with a very high stability, reproducibility and a continuous duty cycle. This laboratory ph meter incorporates an advanced c-mos fet input operational amplif ... Click here for more info
Company Name : C.d. Instrumentation (p) Ltd
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pH Meter, Laboratory Equipment, Indian Manufacturer, Indian Supplier, Indian Exporters