Jai Lab Products

Bommasandra, Bangalore, Karnataka

Total Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm). TDS is directly related to the purity of water and the quality of water purification systems and affects everything that consumes, lives in, or uses water, whether organic or inorganic, whether for better or for worse. Common water filter and water purification systems:

Carbon filtration: Charcoal, a form of carbon with a high surface area, adsorbs (or sticks to) many compounds, including some toxic compounds. Water is passed through activated charcoal to remove such contaminants. Reverse osmosis (R.O.): Reverse osmosis works by forcing water under great pressure against a semi-permeable membrane that allows water molecules to pass through while excluding most contaminants. RO is the most thorough method of large-scale water purification available. Distillation: Distillation involves boiling the water to produce water vapor. The water vapor then rises to a cooled surface where it can condense back into a liquid and be collected. Because the dissolved solids are not normally vaporized, they remain in the boiling solution. Deionization (DI): Water is passed between a positive electrode and a negative electrode. Ion selective membranes allow the positive ions to separate from the water toward the negative electrode and the negative ions toward the positive electrode. High purity de-ionized water results. The water is usually passed through a reverse osmosis unit first to remove nonionic organic contaminants.

A pH Meter is a scientific instrument that measures the hydrogen-ion concentration (or pH) in a solution, indicating its acidity or alkalinity.The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode. It usually has a glass electrode plus a calomel reference electrode, or a combination electrode.In addition to measuring the pH of liquids, a special probe is sometimes used to measure the pH of semi-solid substances. Types of pH meters:

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. Specialty meters and probes are available for use in special applications, harsh environments, etc. There are also holographic pH sensors, which allow pH measurement colorimetrically.

A Ion pH Meter is a scientific instrument that measures the hydrogen-ion concentration (or pH) in a solution, indicating its acidity or alkalinity.The Ion pH meter measures the difference in electrical potential between a Ion pH electrode and a reference electrode. It usually has a glass electrode plus a calomel reference electrode, or a combination electrode.In addition to measuring the Ion pH of liquids, a special probe is sometimes used to measure the Ion pH of semi-solid substances. Types of Ion pH meters:

Ion 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 Ion pH caused by temperature. Specialty meters and probes are available for use in special applications, harsh environments, etc. There are also holographic pH sensors, which allow Ion pH measurement colorimetrically.

A wide range of conductivity meters and conductivity controllers for a variety of environments and applications. Our low cost pocket conductivity testers and portable conductivity meters are ideal for field based conductivity measurement. Many models have an onboard memory to store and recall conductivity readings taken. For laboratory based applications, select from benchtop conductivity meters including leading brands such as Oakton, YSI, and Thermo Orion. Features of this style of conductivity meter can include a computer interface either by RS-232 or USB. Speak to our Applications Specialists for free technical support on conductivity measurement to help solve your application needs. Conductivity Meter & Measurement Selection Considerations

When selecting a conductivity meter important features that need to be considered are :
Autoranging: Meter automatically selects the most accurate range for measurement. There is no need to manually change the range. TDS Conversion Factor: When a solution does not have a similar ionic water content to natural water or salt water, then a TDS conversion factor is needed to automatically adjust the TDS readings Temperature Compensation: A cell with built-in temperature sensor allows the meter to make adjustments to the conductivity or TDS reading based on changes in solution temperature Adjustable temperature coefficients: Alcohols and pure water are affected by changes in temperature differently than typical samples. An adjustable temperature coefficient allows the user to compensate for the properties of the measured solution Adjustable cell constant: Adjusts the measurement to reflect use of a cell with a constant other than K = 1.0. Wide range meters may except cells between K = 0.01 and 10