Laboratory

Ecotechnology Laboratory
Testing laboratory accredited to ISO/IEC 17025:2017 by the Croatian Accreditation Agency (HAA)
Accreditations and Authorizations
Process Laboratory
Using careful process simulation with representative raw materials under real-world conditions, we ensure the selection of optimal technologies to cut down your operating costs
Process laboratory
Analytical Laboratory
Analytical Laboratory
From sampling to comprehensive analysis
Biogas/Biomethane Potential | Substrate Biodegradability

Laboratory Testing

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Waste Analysis

Waste Analysis

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Comprehensive Wastewater Analysis

Comprehensive Wastewater Analysis

Professional wastewater analysis is a key diagnostic tool for businesses seeking to optimize processes and ensure legal compliance.
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Analiza oporabljenih goriva

Recovered Fuel Analysis

Recovered Fuel Analysis

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Analiz amulja - mjerenje ph vrijednosti

Sludge Analysis

Sludge Analysis

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Analiza komposta

https://croteh.eu/en/laboratory/sludge-analysis/ ‎Uredi

https://croteh.eu/en/laboratory/sludge-analysis/ ‎Uredi

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Morphological Composition of Waste

Our Ecotechnology Laboratory is accredited to perform waste morphology testing to assess the composition and characterization of waste according to type, quantity, size, and other physical properties.

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Uzorkovanje otpada, otpadnih materijala i nusproizvoda

ON-SITE SAMPLING

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Uzorkovanje otpada, otpadnih materijala i nusproizvoda

Solid Waste

Sampling of Waste, Waste Materials, and By-products

The Ecotechnology Laboratory provides waste, waste material, and by-product sampling services in accordance with HRN CEN/TR 15310 (1–5):2008
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Uzorkovanje otpadnih voda

WASTEWATER

Wastewater Sampling

The Ecotechnology Laboratory provides wastewater sampling services in accordance with HRN ISO 5667-10:2020
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Uzorkovanje mulja

SLUDGE

Sludge Sampling

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Landfill Gas

Gas Composition Measurement

We provide measurement of gas concentrations, including methane (CH4), carbon dioxide (CO2), oxygen (O2), and hydrogen sulfide (H2S)
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Odor Testing

Our Ecotechnology Laboratory is also accredited for on-site odor impact assessment using the plume method in accordance with HRN EN 16841-2:2016

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Ispitivanje neugodnih mirisa metodom perjanice

SPECIALIZED LABORATORY FOR BIODEGRADABILITY PARAMETER TESTING

At CROTEH, our laboratory also conducts testing of biogas/biomethane production processes, biogas/biomethane potential assessments, as well as analysis and categorization of biodegradable waste materials. Biogas/biomethane potential assessment of organic waste lays the foundation for designing customized, efficient, and sustainable technologies in biodegradable municipal waste management, as well as food industry and agricultural waste management.

Process Laboratory

SUBSTRATE BIODEGRADABILITY

Substrate Biodegradability Assessment

Assessing the biodegradability of municipal and other waste provides valuable information that facilitates decision-making within waste management systems
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BIOGAS/BIOMETHANE POTENTIAL

Waste Material Characterization

Assessing the biogas/biomethane potential and degradation rate of organic matter facilitates a more accurate and comprehensive waste characterization
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Real Dynamic Respiration Index (RDRI)

Assessing Aerobic Bacterial Activity – Real Dynamic Respiration Index (RDRI)

Assessing Aerobic Bacterial Activity – Real Dynamic Respiration Index (RDRI)
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Respiration Activity (AT4)

Measurement of Respiration Activity (AT4)

Our laboratory uses accredited testing methods to deliver accurate assessments of biological activity and provide a reliable basis for safe and compliant waste management.
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TESTING PACKAGES FOR LEGAL COMPLIANCE

END-OF-WASTE STATUS REGULATION

NN 55/2023

This Regulation details specific requirements that need to be fulfilled by a substance or material to cease to be regulated as waste.
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LANDFILL REGULATION

NN 4/2023

This Regulation prescribes criteria for the acceptance of waste at landfills and environmental emission limit values for waste disposal.
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REGULATION ON WASTEWATER EMISSION LIMIT VALUES

NN 26/2020

This Regulation prescribes emission limit values for pollutants in industrial wastewater prior to discharge into public sewer systems.
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Fertilizing Products Act

NN 39/2023

This legislation regulates the market placement, production, import, and quality control of fertilizing products to ensure their quality, safety, and effectiveness in agricultural applications.
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THERMAL WASTE TREATMENT REGULATION

NN 75/2016

This Regulation governs the requirements for the design, construction, operation, and supervision of waste incineration and co-incineration facilities.
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WASTE TYPE REGULATION

NN 27/1996

This Regulation defines waste categories based on the properties and origin of waste, as well as type-based waste management options.
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Plant Operation Monitoring and Optimization

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Analiza parametara rada bioplinskih postrojenja

Operating parameters of biogas plants

Analysis of biogas plant performance

Control parameters in digesters, biodegradability assessment, respiration activity, and toxicity
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Operating parameters of Wastewater Treatment Plants (WWTP)

Analysis of wastewater treatment plant performance

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Operating parameters of waste treatment facilities

Analysis of waste treatment plant performance

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Need laboratory analysis services? Feel free to contact us with confidence.

Anamarija Lončar, M.Sc. bioproc.
Laboratory Manager
++385 98 99 84 907
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1. REAL SAMPLE COLLECTION

We collect representative field samples directly at client facilities and analyze them in our accredited laboratory in accordance with recognized standards. Our laboratory testing includes physical, chemical, and biological parameters required to define design input values, including load variability and seasonal or operational fluctuations. These data form the foundation for reliable scaling solutions and technology development.

2. DEVELOPMENT OF TECHNICAL SOLUTIONS

Based on the assessment of existing conditions and laboratory results, we develop technical solutions tailored to each client’s requirements. When designing solutions, we consider plant capacity, influent characteristics, discharge requirements (public sewer systems or natural receiving waters), and circular economy principles. To support detailed process development, our laboratory is equipped with reactors, measuring instruments, and pilot-scale systems that allow us to simulate real operating conditions. Through pilot testing, we evaluate process efficiency, optimize operating parameters, and validate treatment concepts before full-scale implementation. This approach significantly reduces investment and operational risk while ensuring long-term sustainability of the selected solution. We also place strong emphasis on optimizing energy, chemical, and resource consumption while minimizing the plant’s environmental footprint throughout its lifecycle.

3. ENGINEERING DESIGN AND PERMITTING

Our multidisciplinary engineering team prepares complete project documentation, from conceptual designs and feasibility studies to detailed engineering documentation and permit applications. All documentation is developed in accordance with current legislation, technical regulations, and applicable standards while maintaining close coordination with clients and regulatory authorities.

4. PLANT ENGINEERING AND INSTALLATION – Complete turnkey plant implementation proposal, including detailed design documentation and commissioning services

We deliver turnkey treatment plants tailored to each client’s needs. Our services include detailed engineering design, equipment procurement and delivery, site organization, installation of process and electrical equipment, and integration of automation and control systems. The final stage includes functional testing and preparation for plant commissioning.

5. CONSTRUCTION SUPERVISION

We provide professional technical supervision during construction to ensure full compliance with project documentation, technical standards, and contractual requirements. We monitor construction quality, installed equipment, and adherence to project timelines.

6. PLANT COMMISSIONING AND STAFF TRAINING

After construction and functional testing are complete, we perform staged commissioning with continuous monitoring of process parameters and adjustment of operating conditions. We also prepare operational manuals and provide professional staff training to ensure safe, efficient, and long-term stable plant operation.

7. POST-CONSTRUCTION TESTING

After project completion, we perform functional and other tests to verify that the treatment plant achieves the required operational parameters and effluent quality.

8. PLANT SERVICE AND MAINTENANCE

We provide preventive and corrective maintenance, scheduled service inspections, and 24/7/365 technical support. Our systematic maintenance approach extends equipment lifespan, minimizes downtime risk, and ensures high operational efficiency.

9. PLANT MONITORING AND OPERATIONAL CONTROL

We implement SCADA and PLC automation and control systems that enable continuous plant monitoring, analysis of key process parameters, and rapid response to operational deviations or fluctuations in wastewater flow and loading. We place particular emphasis on reducing energy, chemical, and labor consumption.

10. PLANT OPTIMIZATION AND RECONSTRUCTION

We perform technical assessments of existing systems to identify capacity limitations, energy losses, and operational inefficiencies. Based on our findings, we recommend retrofits, upgrades, and modernization of technological process lines to improve efficiency, ensure compliance with new regulatory requirements, and extend plant service life.