Laboratory
With Nordic Green Engineering’s modern laboratory, we offer a wide range of laboratory services, both within biogas, agriculture and production. With a focus on quality and speed, we can put together analysis programs especially for you and your wishes, which can be purchased individually or as a service agreement.
We offer
- Fast results and reporting (3 business days on all analyses)
- Urgent shipment of samples if there are problems at the facility, free of charge
- NGE actively responds to results from analyses that are problematic for operations via text message, email or telephone.
- Possibility for feedback on results/sparring
- Online access to results and ongoing analyses
- NGE arranges transport of your samples to our laboratory for each sampling.
- Cans, labels and cardboard boxes for transport can be requested from NGE.
Laboratory specializing in biogas
At Nordic Green Engineering we have a well-equipped and modern laboratory that specializes in biogas. Our laboratory technicians have in-depth knowledge of the analyses that target the needs of biogas plants and can – in close collaboration with our engineers – offer valuable advice on the health status and optimization potential of your plant.
We perform the following analyses in our laboratory, among others:
Dry matter: TS [%]
The dry matter content is the part of the biomass that is not water. Dry matter covers an amount of organic and inorganic matter.
Method: AI 1100/ Gravimetric and is stated in mass percent./ DS 204, 1980
VFA: Content of organic acids [mg/L]
In the VFA method, we go one step deeper into biology, as the individual VFAs in the reactor are measured directly and the composition of the acids is thus seen. The VFA method makes it possible to detect inhibition of acetogenesis (degradation to acetic acid) earlier.
Method: AI 3071/ Gas chromatographic
Viscosity [cP]
Viscosity is of great importance in both tanks and for the degassing slurry that is to be spread on the fields. Continuous monitoring makes it possible to adapt and adjust processes. The method can also be used on substrates.
Method: AI 4001/ Viscometric measurement, Viscolikte 700
Raw material analyses
It is important to clarify the raw materials used and we offer various solutions, which together include COD, Total Sulfur, pH, VFA, dry matter determination and ash determination.
pH [-]
The pH in the reactors should be around neutral. Depending on the temperature and the type of microorganisms, the pH can vary slightly. The most important thing is that the pH is kept stable and optimal at values between 7-8. Variations in pH can be a sign of acid buildup and cause problems with hydrogen sulfide and ammonia.
Method: AI/ Potentiometric measurement/ PHC301
FOS/TAC [-]
The FOS/TAC ratio thus indicates how much of the buffer capacity in the biomass has been used up by the acid formed and can therefore tell whether the plant is being overfed or can be further stressed.
Gas potential tests
At NGE we perform methane potential tests and tests of the residual gas potential from degassed biomass.
In a methane potential test, substrates are decomposed so that you know what methane gas yield you can expect from a given product.
In a residual gas potential test, the degassed biomass is decomposed and you will get information about the turnover of native biomass.
Nutrient analysis
At NGE we carey out analysis of slurry and water samples for total nitrogen, ammonium, phosphorus and potassium.
Nutrient levels are important to monitor as they provide an indication of the condition and turnover. Method: AI1200 (ISO 11905-1 H36 & ISO 7890-1); AI 1300 (ISO 7150-1), AI 1400 (ISO 6878 – D11) or DS 259:2003, DS/EN ISO 11885:2009 / ICP-OES, AI 1600 (Spectrophotometry with tetraphenylborate) or DS 259:2003, DS/EN ISO 11885:2009 / ICP-OES.
Loss on ignition: GT [%]
The loss on ignition is the part of the dry sample that can be burned off at 550° C and is thus an expression of the organic material. The ignition loss is therefore desired to be as high as possible, as it results in the greatest possible biogas potential.
Method: AI 1100/ Gravimetric and stated in mass percent/ DS 204, 1980
Gas potential test
Through controlled digestion tests, we can determine the gas potential of the biomass composition. The BMP test is particularly useful for biogas plants and biogas suppliers who need to value new biomasses, as it allows testing the methane potential of new products together with seed stock from their own plant before purchasing.
If you would like to know more about any of the analyses, or if you have a query about an analysis or other of our laboratory services, please feel free to contact us.
We believe that secure and sustainable energy is the way forward