Service analysis is an important part of operating the cooling system and ensures its economical operation. Regular inspection of water quality and dosing equipment is necessary.


To optimize the correct operation of your water system, we recommend you to perform a regular analysis of system-relevant parameters. The basic analysis is performed by our specialist, from whom you will receive a written report with an evaluation of the results and specific recommendations for the next period.

The laboratory report will provide you with information about the basic parameters of the circuit, e.g. pH values, el. conductivity, alkalinity, water hardness, chloride or iron content. We also determine the content of the active ingredient in order to verify its concentration in the circulating water and, if necessary, to adjust the dosage. A very important parameter is monitoring of the so-called biological acticity, where we evaluate the presence of algae, bacteria, fungi, etc. on the basis of culture concentrations and regulate the dosage of relevant biocides.

The subsequent service report then summarizes the status of the circuit and summarizes the recommendations for the next period.


For more sophisticated laboratory analyses, we use background of our partner, company Aqua-Concept, whose laboratory offers the following activities and analyses:

To ensure a protective effect against corrosion, both, pipe materials and circulating water, must meet high standards, because once the pipes are permanently damaged by corrosion, their replacement is very expensive and there are undesirable downtimes in production.

Using our corrosion protection measurements, we can competently predict whether your system is corrosive or not. The methodology allows you to estimate the corrosion behaviour of materials in your system.


  • Qualitative statement on the corrosivity of metals in aqueous solution under different test conditions (materials, dynamics / statics, temperature, duration)
  • Graphical representation of all test results and visual evaluation of the results
  • Determination of the corrosion rate [in µm / year], as well as the pH and conductivity values ​​and their changes during the test
  • Interpretation of test results


The corresponding material (combinations are also possible here) is immersed in the liquid to be examined. Under the previously defined test conditions, the test is performed for a certain test period. The experiment is then evaluated.


  • Steel
  • Stainless steel
  • Galvanized materials
  • Zinc
  • Brass
  • Copper
  • Aluminium


  • At least 500 ml of circulating water in a closable container is required to perform the test
  • Indication of sampling time
  • Please mark the sample with the following information: Company, contact person, telephone, e-mail
  • Price will be provided on request. Do not hesitate to contact us!


Regular maintenance of cooling, geothermal or solar systems is part of standard procedures that guarantee system efficiency and operational safety. This includes, but is not limited to, regular inspection of the heat transfer fluid. Frost and corrosion protection are no longer guaranteed after imbalance. In particular, insufficient frost protection can have devastating consequences for the system.

Thermal degradation cancels frost protection

The anti-freeze characteristics of solar fluids must guarantee frost protection even at low temperatures and at the same time must remain stable even at high temperatures. Problem: So-called thermal nests decompose glycol in coolants over time. The effect against frost protection is gradually lost.

Not every measurement of anti-freeze protection leads to valid results

Regular inspection of antifreeze properties is therefore essential for the operational safety of the systems. Theoretically, any device owner could check the anti-freeze protection with a refractometer. However, two problems arise: First, the thermal decomposition of glycol significantly impairs the reliability of the measurement. On the other hand, heat transfer fluids, such as cooling brines, solar fluids or antifreeze fluids, consist not only of mixtures of pure glycol or ethanol and water. In addition, they generally contain corrosion inhibitors or other additives. And that's the catch. Conventional freezing point tests by density measurement or other physic-technical processes (refractometry) do not offer accurate results for common heat transfer fluids, as inhibitors usually significantly affect the measurement. Professional measurement according to ASTM D 1177 provides real system safety.

Professional measurement of frost protection according to ASTM D 1177

Aqua-Concept GmbH now offers you professional frost protection measurements down to -70°C according to ASTM D 1177. Ice flocculation is determined by an automatic low-temperature cryostat with PLC control. In particular, mixtures of water with monoethylene glycol, monopropylene glycol or ethanol can be determined. Individual determinations or standardized duplicate determinations are possible. With a detailed analysis report and reliable results, you can now assess your system's frost resistance.