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Online Concentration Meter Product List

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Instran Ammonia Meter

Instran Ammonia Meter

It is possible to measure the concentration of dissolved ammonia, such as that found in seawater, for a wide range of applications.

The Spanish-made INSTRAN ammonia meter is designed to accommodate all types of samples, from drinking water to wastewater and seawater. It incorporates laboratory measurement techniques into an online analysis device, performing automatic calibration and automatic cleaning for each analysis, enabling high-precision measurements. The syringe volume control method ensures that the syringe does not come into contact with the sample or reagents, extending the lifespan of the syringe. It requires minimal maintenance, consumes less reagents, and maintains high precision.

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Instran Online Arsenic Analyzer

Instran Online Arsenic Analyzer

Continuous measurement of arsenic concentration in water is possible!

Measurement Method – Colorimetric After placing the sample in the measurement cell, reagents are added to adjust the solution to the desired conditions (pH, valence, etc.). A blank is then performed to correct for disturbances in temperature and turbidity. After that, the final reagent is added, which reacts with the solution to produce a color that is measured. Measurement Principle This method is based on the oxidation of As(III) to As(IV). Subsequently, when the necessary reagents are added, As(IV) reacts with molybdate to form a molybdenum arsenic complex. This complex is reduced and exhibits a blue color, which is proportional to the arsenic concentration.

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Instran Online Fluoride Ion Concentration Meter

Instran Online Fluoride Ion Concentration Meter

Fluorine concentration can be measured with a wide range and high precision from a minimum of 0 to 0.5 ppm to a maximum of 0 to 100 ppm!

We adopt the SKA method to calculate concentration based on the difference in concentration between a standard solution of known concentration and the sample. By comparing the potential differences, we can minimize the impact of the measurement environment on the results. During measurement, reagents are used to adjust the pH. This removes interference from ions other than fluoride, enabling high-precision measurement of fluoride concentration.

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Instran High Concentration Online Boron Concentration Meter

Instran High Concentration Online Boron Concentration Meter

It is possible to measure boron concentrations of up to 500 ppm with high precision!

By using a syringe that allows for injection volume adjustments in increments of 0.0015 ml, high-precision measurement of boron concentration can be achieved through the injection of titrant. The preparation of reagents is easy and inexpensive, allowing for low-cost operation. Additionally, by adjusting the concentration of the reagents, it is possible to change the measurement range.

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Instran Low Concentration Online Boron Concentration Meter

Instran Low Concentration Online Boron Concentration Meter

Minimum measurement range 0~100 ppb! Capable of measuring low concentrations of boron!

This is an online boron concentration meter capable of measuring low concentrations of boron in the range of 0 to 100 ppb. After performing a blank measurement to correct for the effects of temperature and turbidity on the measurement, actual measurements are conducted. This minimizes the impact of environmental factors on the measurements, allowing for high-precision measurement of boron concentration.

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Instran Online Chlorine Meter

Instran Online Chlorine Meter

Continuous measurement of total chlorine concentration in water using an ion-selective electrode method!

Advantages This method is a very simple chlorine measurement technique. It consumes a small amount of reagents, and chromate ions, which interfere in amperometric methods, do not cause interference here. Conductivity and calcium, which are significant interferences in the DPD method, do not interfere either. Measurement Principle – ISE Electrode Analysis is performed using the Standard Known Addition (SKA) method. Two measurements are taken, and the concentration is calculated from the difference between the two and the slope during the calibration curve creation. The reference for calculating the results is not an absolute value but the relative difference in mV, so any changes that may occur in the matrix sample are corrected by both of these lectures. This allows for the avoidance of external interference. Measurement Method It is based on the measurement of iodide. Through the reaction of chlorine, buffer solution, and potassium iodide reagent, chlorine reacts with potassium, releasing iodide. Chlorine displaces iodide. Subsequently, the ISE electrode measures the iodide, and the amount of iodide measured corresponds to the chlorine in the sample.

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Instran Online Chlorine Meter (High Concentration)

Instran Online Chlorine Meter (High Concentration)

It is a colorimetric online chlorine measuring device. It allows for regular sampling and analysis of total chlorine concentration.

Measurement Principle Potassium iodide reacts with chlorine in acidic media, producing a yellow color. When a sufficient amount of titrant is added, it becomes colorless again, allowing the concentration of chlorine to be calculated based on the amount of titrant used. Features Potassium iodide reacts with chlorine in acidic media, producing a yellow color. When a sufficient amount of titrant is added, it becomes colorless again, allowing the concentration of chlorine to be calculated based on the amount of titrant used.

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Instran Online Hardness Tester

Instran Online Hardness Tester

Continuous measurement of water hardness is possible!

Method – Colorimetric Analysis After adding the reagent and setting appropriate conditions for the sample, the titrant is filled. Thanks to the minimum addition amount of the module syringe driver being controlled in 0.015 mL increments, very high precision is achieved. Furthermore, the software has been improved to speed up the initial dosing, and as it approaches the inflection point, the titrant is added slowly, enhancing accuracy.

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Instran Online Nitrate Concentration Meter

Instran Online Nitrate Concentration Meter

Continuous measurement of nitrate concentration in water is possible!

Method - Ion Selective Electrode Reagent 1 is added before analysis to activate the electrode. After that, the first measurement is taken. Next, a small amount of a high-concentration nitrate solution is added, and a second mV measurement is performed to calculate the results. If an extraction solution is used, cleaning with an ammonia-based cleaning solution is necessary after analysis to prevent cross-contamination. Many probes are affected by interference from nitrite and chloride, but in this method, using the extraction solution at the beginning of the analysis completely removes the influence of these two ions. Therefore, the only ion affecting the measurement is the nitrate ion (NO₃⁻).

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Instran Online Calcium Hardness Meter

Instran Online Calcium Hardness Meter

High-precision measurements are possible while eliminating the influence of magnesium!

After adding the reagents to prepare the sample under specified conditions, the injection of the titrant is performed. The minimum injection volume (0.015 ml) achieved by the module's syringe driver ensures very high precision, with a maximum difference of only three drops even in two consecutive measurements using the same standard sample. Additionally, improvements in the software have accelerated the injection of the titrant in the initial stages, while slowing down the injection rate as it approaches the endpoint, ensuring even higher accuracy. This method is a modification of the method developed by Reilly (published in Analytical Chemistry). By adjusting the pH of the solution, magnesium precipitates and is not included in the titration target. It is specialized for calcium even in the presence of large amounts of magnesium. The measurement wavelength is adjusted to the calcium–calcon (Ca–Calcon) complex, while the reference wavelength is set to the EDTA–calcon complex, allowing for accurate and reproducible detection of the endpoint.

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Instran Online Nitrite Concentration Meter

Instran Online Nitrite Concentration Meter

Even at a concentration of 100 ppb, which is often considered the legal limit in drinking water, a significantly high absorbance can be obtained.

After adding the sample to the measurement cell, several reagents are added to adjust the solution conditions (such as pH and the atomic valence of elements). Subsequently, a blank measurement is performed to correct for the effects of temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce color and is measured at the appropriate wavelength. Thanks to the photometer used, results can be obtained with very high accuracy. This method is based on the reaction in which nitrous acid generated from nitrite ions undergoes a diazotization reaction with sulfanilamide, forming a vivid colored diazo dye.

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Instran Online Copper Ion Concentration Meter

Instran Online Copper Ion Concentration Meter

Continuous measurement of copper ion concentration in water is possible!

Method - Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the conditions of the solution (such as pH and oxidation state). Subsequently, a blank measurement is performed to correct for the effects of temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce a color that is measured at the appropriate wavelength. The photometer used allows for highly accurate measurement results. This method is based on the reduction of copper(II) to copper(I) in acidic solutions. The neocuproine reagent specifically reacts with cuprous ions (Cu⁺). If present, iron can also be reduced to iron(II) (Fe²⁺) and may react with neocuproine. This method is specific to copper, and the cuprous-neocuproine complex has a clear and relatively strong absorbance, allowing for the measurement of low concentrations of copper at the ppb level. The influence of iron can be removed with additional reagents.

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Instran Online Low Concentration Iron Ion Concentration Meter

Instran Online Low Concentration Iron Ion Concentration Meter

Continuous measurement of low concentrations of iron ions in water is possible!

Method - Colorimetric Analysis After the sample is introduced into the measurement cell, several reagents are added to adjust the solution conditions (such as pH and the valence of elements). Subsequently, a blank measurement is conducted to correct for the effects of temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce a color that is measured at the appropriate wavelength. Depending on the photometer used, the results are obtained with very high precision. Trivalent iron (Fe³⁺) is reduced to divalent iron (Fe²⁺) by hydroxylamine hydrochloride. The divalent iron ions react with ferrozine in a buffer solution adjusted to a pH range of 5 to 7, forming a pink complex. This method allows for the measurement of very low concentrations of iron. The reagents used are stable. If it is necessary to measure total iron, the stirring time can be extended to ensure that the iron is completely dissolved in an acidic medium.

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Instran Online High-Concentration Silica Meter

Instran Online High-Concentration Silica Meter

Continuous measurement of silica concentration in water is possible!

Method - Colorimetric Analysis After introducing the sample into the measurement cell, several reagents are added to adjust the solution conditions (such as pH and valence elements). A blank measurement is then performed to correct for the effects of temperature and turbidity. Next, the final reagent is added, which reacts with the solution to develop color, and this is measured at the appropriate wavelength. Depending on the photometer used, the results are obtained with very high precision. Silicon (silica) reacts with molybdate reagent in an acidic environment to form a yellow silicomolybdic acid complex. This complex is reduced by ascorbic acid, resulting in a blue color known as "molybdenum blue." The concentration of this blue color is proportional to the silica concentration. The developed blue color is very intense, providing excellent accuracy and reproducibility. This method can also measure very low concentrations of less than 50 ppb. *Interfering Factors Phosphates and tannins: can be removed by oxalic acid Hydrogen sulfide and large amounts of iron: cause interference

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Instran Online Low Concentration Silica Meter

Instran Online Low Concentration Silica Meter

Continuous measurement of low concentration silica in water is possible!

Method – Colorimetric Analysis After adding the sample to the measurement cell, multiple reagents are added to adjust the solution to the specified conditions. Next, a blank measurement is performed to correct for the effects of temperature and turbidity. After that, the final reagent is added, which reacts with the solution to produce color, and this is measured at the appropriate wavelength. The photometer used allows for measurements with high precision. This method exclusively forms B-type molybdoceric acid, enabling the highly sensitive measurement of trace silica in high-purity water, as required in power plants and the electronics industry. Furthermore, the new formulation of reagent 1 has reduced the time required for the reaction to complete. Although reagent 1 is relatively expensive, the amount needed for use is very small, making it economical.

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Instran Online Sodium (Na) Concentration Meter

Instran Online Sodium (Na) Concentration Meter

Continuous measurement of sodium concentration in water is possible!

Method - Ion Selective Electrode Analysis is performed using the Standard Known Addition method (SKA). This process involves two measurements. The difference between the two and the slope obtained during calibration are used to calculate the concentration. By using both measurement values, changes in the matrix sample are corrected, and the calculation of results is based on the relative mV difference rather than absolute values. This helps to avoid external interference. Measurement Principle The sample is adjusted to pH 8-11 using an Ion Strength Adjuster (ISA). After that, the first measurement is taken. Next, a small amount of high-concentration sodium solution is added. Finally, a second mV reading is taken, and the results are calculated. The advantage of this method is that the rapid response of the electrode allows for quick analysis. The main interfering cations are either absent or present in very small amounts. Furthermore, the ISA solution prevents these interferences. *Interfering factors: Lithium, Potassium, Rubidium, Ammonia, Silver, Thallium

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Instran Online Chloride Ion Concentration Meter

Instran Online Chloride Ion Concentration Meter

It is possible to measure chlorine ion concentration with a wide range and high precision from a minimum of 0 to 5 ppm to a maximum of 0 to 500 ppm!

The SKA method is employed to calculate concentration based on the difference in concentrations between a standard solution of known concentration and the sample. By comparing the potential differences, the influence of the measurement environment on the results can be minimized. There are several interfering substances in the measurement of chloride ions, but this method allows for their easy removal.

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Instran Online Aluminum Concentration Meter

Instran Online Aluminum Concentration Meter

Continuous measurement of aluminum concentration in water is possible!

Method – Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (such as pH and valence elements). Next, a blank is created to correct for disturbances in temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce color, and measurements are taken using the correct wavelength. Since a photometer is used, the results are very accurate.

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Instran Online Manga Concentration Meter

Instran Online Manga Concentration Meter

Continuous measurement of manganese concentration in water is possible!

Method – Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (such as pH and valence elements). Next, a blank is created to correct for disturbances in temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce color, and measurements are taken using the correct wavelength. Since a photometer is used, the results are very accurate.

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Instran Online Hydrazine Concentration Meter

Instran Online Hydrazine Concentration Meter

Continuous measurement of hydrazine concentration in water is possible!

Method – Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (such as pH and valence elements). Next, a blank is created to correct for disturbances in temperature and turbidity. Then, the final reagent is added, which reacts with the solution to develop color and is measured using the correct wavelength. Since a photometer is used, the results are very accurate.

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Instran Online High Concentration Phosphate Concentration Meter

Instran Online High Concentration Phosphate Concentration Meter

Continuous measurement of phosphate (PO4 3-) concentration in water is possible!

Method – Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (such as pH and valence elements). Next, a blank is created to correct for disturbances in temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce color, and measurements are taken using the correct wavelength. Since a photometer is used, the results are very accurate. This method is specialized for phosphates and is particularly useful for measuring high concentrations of phosphates. Even if the color of the measurement sample is yellow, performing an auto-blanking before adding the reagent can correct for the background yellow present in the measurement sample. Additionally, only one type of reagent is used, so the amount of reagent added is very small (1 ml).

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Instran Online Low Concentration Phosphate Meter

Instran Online Low Concentration Phosphate Meter

Continuous measurement of phosphate (PO4 3-) concentration in water is possible!

Method – Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (such as pH and valence elements). Next, a blank is created to correct for disturbances in temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce a color change, and measurements are taken using the correct wavelength. Since a photometer is used, the results are very accurate. The developed blue color is very intense, allowing for high precision and reproducibility, making it possible to measure truly low concentration values (below 50 ppb) with this method.

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Instran Online Potassium Meter

Instran Online Potassium Meter

Continuous measurement of potassium concentration in water is possible!

Method - Ion Selective Electrode The analysis uses the known addition method (SKA). In this technique, two measurements are taken, and the difference between them, along with the slope obtained during calibration, is used to calculate the concentration. By performing both measurements, changes in the sample matrix are corrected, and the calculation uses the relative difference in mV rather than absolute values, allowing for the avoidance of external interference. An ion strength adjuster (ISA solution) is added to the sample to activate the electrode while simultaneously suppressing the effects of interfering components. Subsequently, the fluoride concentration is measured using the "Standard Known Addition Method (SKA)." This method is very simple and easy to implement. Additionally, because the SKA method corrects for electrode drift and variations in the sample matrix, stable results are obtained.

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Instran Online High Concentration Iron Ion Concentration Meter

Instran Online High Concentration Iron Ion Concentration Meter

Continuous measurement of iron ion concentration in water is possible!

Method - Colorimetric Analysis After introducing the sample into the measurement cell, several reagents are added to adjust the conditions of the solution (such as pH and the valence of elements). Subsequently, a blank measurement is performed to correct for the effects of temperature and turbidity. Then, the final reagent is added, which reacts with the solution to produce a color that is measured at the appropriate wavelength. Depending on the photometer used, the results are obtained with very high precision. Trivalent iron ions (Fe³⁺) are reduced to divalent iron (Fe²⁺) by hydroxylamine hydrochloride. Divalent iron ions react with 1:10-phenanthroline in a solution adjusted to a pH range of 5 to 7 to form a pink complex. This method allows for the measurement of relatively high concentrations of iron without excessive absorbance. The reagents used are stable. If it is necessary to measure total iron, the stirring time can be extended to ensure that the iron completely dissolves in the acidic solution.

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Instran Online Nickel Concentration Meter

Instran Online Nickel Concentration Meter

Continuous measurement of nickel concentration in water is possible!

Method - Colorimetric Analysis After the sample is introduced into the measurement cell, several reagents are added to adjust the solution conditions (such as pH and the valence of elements). Subsequently, a blank measurement is performed to correct for the effects of temperature and turbidity. Next, the final reagent is added, which reacts with the solution to produce a color that is measured at the appropriate wavelength. Depending on the photometer used, the results are obtained with very high precision. The optimal pH conditions are established using an acetate buffer, and Br-PADAP reacts with nickel to form a strong pink color that is proportional to the nickel concentration. The pink color formed can stain the measurement cell and interfere with subsequent measurements; however, this interference is removed by a cleaning solution from Instran. *Substances that may interfere: Cobalt*

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Instran Online Zinc Concentration Meter

Instran Online Zinc Concentration Meter

Continuous measurement of nickel concentration in water is possible!

Method - Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (pH, valence elements, etc.). Next, a blank measurement is performed to correct for the effects of temperature and turbidity. After that, the final reagent is added, which reacts with the solution to produce a color, and this color is measured at the appropriate wavelength. Depending on the photometer used, results can be obtained with high accuracy. Measurement Principle All metal components form cyanide complexes, and by adding cyclohexanone, the zinc complex dissociates, allowing zinc to react with the zincon dye.

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