Function of Reagents and Indicators for the Parameter pH
Reagents and indicators play an important role in determining the pH value of a solution. The pH value provides information about whether a substance is acidic, neutral, or basic, and is a key parameter in many chemical, biological, and technical processes.
Indicators are dyes that change color depending on the pH value. Well-known examples include litmus (red in acids, blue in bases), phenolphthalein (colorless to pink), or methyl orange (red to yellow). They are used to quickly and easily make pH changes visible—mainly in qualitative analysis.
Reagents can also be used to determine pH, especially in quantitative methods such as titration. In this process, the reagent reacts with the substance being analyzed, and with the help of an indicator or measuring device, the exact pH value can be determined.
Areas of Application
- Environmental analysis: For monitoring pH levels in water bodies, soil, or wastewater. A pH that is too low or too high can indicate environmental pollution.
- Medicine and biology: In diagnostics (e.g., measuring pH in urine, blood, or saliva) to detect diseases or metabolic disorders.
- Food industry: Monitoring pH during the production and storage of foods (e.g., yogurt, cheese, canned goods), as it affects taste, shelf life, and safety.
- Chemical industry: In production processes to monitor and control reactions where pH is critical to the reaction's course.
- Household and everyday use: pH test strips to check pool water, aquariums, skincare products, or cleaning agents.
Testomat Indicator TH2100 for Determining Elevated Residual Hardness Indicator solution for precise monitoring of residual hardness in the higher limit range 1.00–10.00 °dH The Testomat Indicator TH2100 from Heyl, 500 ml bottle, is an original indicator solution for determining residual hardness in the higher hardness range of 1.00–10.00 °dH in water treatment systems. The bottles are designed for use in Testomat devices and enable continuous and reliable monitoring. The TH2100 indicator is specifically designed for higher residual hardness levels. It supports safe process control in industrial and commercial water treatment systems. What measurement ranges does the TH2100 indicator cover? 1.00–10.00 °dH, resolution 0.20 1.79–17.9 °f, resolution 0.40 17.9–179 ppm CaCO₃, resolution 3.8 0.18–1.79 mmoI/I, resolution 0.04 Which Heyl Testomat devices is the indicator suitable for? The indicators are suitable for: Testomat 2000® Testomat 2000® CAL Testomat 2000® DUO Testomat 2000® V Testomat 2000® self clean Testomat ECO® Testomat ECO®-Plus Testomat® EVO TH Testomat Limit
2x100 ml bottles original Testomat® indicator TH 2250 for limit value: 2,50-25,00°dH for measuring residual hardness. limit value: °dH (resolution): 2,50-25,00 (0,50) °f (resolution): 4,48-44,8 (0,40) ppm CaCO3 (resolution): 44,8-448 (3,8) mmol/l (resolution): 0,45 -4,48 (0,04)
Original Indicator Testomat Indicator TH2250 in the 500 ml Bottle from Heyl Precise Residual Hardness Measurement for Testomats The Testomat Indicator TH2250, 500 ml bottle, measures residual hardness in water samples and is suitable for use in our measuring devices Testomat 2000, Testomat EVO, and the new limit measuring device Testomat Limit. The measuring range is 2.50–25.00 °dH with a resolution of 0.50. Thanks to precise measurements, it supports compliance with quality standards in industrial water treatment. It is designed for long service life, minimizing maintenance and downtime. The TH2250 indicator allows reliable, automatic determination of residual hardness in water. What limit values can be measured with the TH2250? 2.50–25.00 °dH, resolution 0.50 4.48–44.8 °f, resolution 0.40 44.8–448 ppm CaCO₃, resolution 3.8 0.45–4.48 mmoI/I, resolution 0.04 Where can the indicator be used? The indicators are suitable for: Testomat 2000® Testomat 2000® CAL Testomat 2000® DUO Testomat 2000® V Testomat 2000® self clean Testomat ECO® Testomat ECO®-Plus Testomat® EVO TH Testomat Limit
The 100 ml bottle of original Testomat® indicator TH 2050 for the limit value 0.5- 5,0°dH only for Testomat® EVO TH. One packing unit contains 2 bottles á 100ml.
The 500 ml bottle of original Testomat® indicator TH 2050 for the limit value 0.5 - 5.0 °dH only for Testomat® EVO TH and Testomat® LAB TH.