{"id":924,"date":"2024-01-11T16:34:50","date_gmt":"2024-01-11T15:34:50","guid":{"rendered":"https:\/\/micropro.de\/analysen\/boeden-und-komposte\/"},"modified":"2026-02-17T10:09:20","modified_gmt":"2026-02-17T09:09:20","slug":"boeden-und-komposte","status":"publish","type":"page","link":"https:\/\/micropro.de\/en\/analysen\/boeden-und-komposte\/","title":{"rendered":"Soil analyses and biodegradation tests"},"content":{"rendered":"\n

<\/h2>\n\n\n\n

We offer all the required analyses for a chemical or micro\u00adbio\u00adlo\u00adgical assessment of solid samples and soils.1<\/sup><\/p>\n\n\n\n

In parti\u00adcular the following micro\u00adbio\u00adlo\u00adgical parameters can be examined:<\/p>\n\n\n\n

<\/div>\n\n\n\n

Breathing activity and gas formation rate<\/h3>
\n

In soil and waste samples diverse biolo\u00adgical processes occur. They are especially based on conversion of organic carbon. Aerobic respi\u00adration tests and anaerobic fermen\u00adtation tests can be used to evaluate waste samples. The German standard tests for waste deposits form the basis for this evaluation process.<\/p>\n\n\n\n

<\/div>\n\n\n\n

 Respiration activity test (AT4<\/sub>) (in accordance with the Ordinance on Environmentally Compatible Storage of Waste)<\/h4>\n\n\n\n
    \n
  • The respi\u00adration activity (AT4<\/sub>) assesses the potential of test material to be biolo\u00adgi\u00adcally decom\u00adposed under aerobic condi\u00adtions. The oxygen consumption per unit of time (e.g 4 or 7 days) is deter\u00admined in the process and compared with corre\u00adsponding blank tests. The respi\u00adration activity is an important parameter in the waste deposit ordinance, for the treatment and deposit of mecha\u00adni\u00adcally and biolo\u00adgi\u00adcally pre-treated waste amongst other things.<\/li>\n\n\n\n
  • We measure the AT4<\/sub> in batch test in accordance with the regula\u00adtions of \u201cOrdinance on Environ\u00admen\u00adtally Compa\u00adtible Storage of Waste from Human Settle\u00adments and on Biolo\u00adgical Waste-Treatment Facilities\u201d with the automatic measu\u00adrement system OxiTop\u00ae<\/sup> (WTW).<\/li>\n<\/ul>\n\n\n\n

    Biogas potential test (Digester gas tests) (GB21<\/sub>)<\/h4>\n\n\n\n
      \n
    • Similar to breathing activity under aerobic condi\u00adtions, the biogas potential test permits a statement on the ability and dynamic of a sample to be biolo\u00adgi\u00adcally decom\u00adposed under anaerobic condi\u00adtions. For this purpose the biolo\u00adgical methane formation is automa\u00adti\u00adcally analysed over a period of 21 days under anaerobic conditions.<\/li>\n\n\n\n
    • This parameter is important for operators of biogas plants, for example. It provides the operator or substrate supplier with infor\u00admation on how much biogas can be produced from a defined substrate during fermen\u00adtation process.<\/li>\n\n\n\n
    • The fermen\u00adtation test is conducted on the basis of German \u201cDIN* 38414 Part 8\u201d (German standard methods for the exami\u00adnation of water, waste water and sludge). German standard tests on carrying out experi\u00adments can also be found in the \u201cOrdinance on Environ\u00admen\u00adtally Compa\u00adtible Storage of Waste from Human Settle\u00adments and on Biolo\u00adgical Waste-Treatment Facilities\u201c and the VDI** Guideline 4630.<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n

      Compost maturity tests<\/h3>
      \n

      Composts must be regularly examined within the scope of the German RAL quality assurance system (RAL-GZ 251). The compost maturity (degree of rotting) is regulated in the German Compost Ordinance and provides infor\u00admation on the maturing of the substrate during the course of the composting process. The more mature a compost is, the less oxygen it consumes in a defined period.<\/p>\n\n\n\n

      This measu\u00adrement is carried out with the automatic measu\u00adrement system OxiTop\u00ae<\/sup> (WTW). Measu\u00adrement of the self-heating of the sample material in the Dewar container also provides infor\u00admation on the biolo\u00adgical stability of the compost.<\/p>\n<\/div><\/div>\n\n\n\n

      Biochemical oxygen demand \u2013 B.O.D. (DIN 38 409 H 51)<\/h3>
      \n

      The bioche\u00admical oxygen demand for n days (BODn<\/strong>) is usually deter\u00admined during 5 days of incubation at 20\u00b0C. It represents the amount of oxygen needed for aerobic decom\u00adposing processes of organic substances by micro\u00ador\u00adga\u00adnisms. The BOD therefore provides infor\u00admation on the biolo\u00adgi\u00adcally recyclable part of organic substances contained in a sample.<\/p>\n\n\n\n

      Diese Messung wird mit dem Messsystem OxiTop\u00ae (WTW) durchgef\u00fchrt<\/p>\n<\/div><\/div>\n\n\n\n

      Biodegradability of substances under defined conditions<\/h3>
      \n

      Deter\u00admining the biode\u00adgra\u00adda\u00adbility of lubri\u00adcants and related products in accordance with DIN* 51828\u20132.<\/p>\n\n\n\n

      Inves\u00adti\u00adgation of substances for easy biolo\u00adgical decom\u00adpo\u00adsition in accordance with the OECD guideline \u201cReady Biode\u00adgra\u00adda\u00adbility\u201d (301):<\/p>\n\n\n\n

        \n
      • The methods are suitable for proving fast and complete biode\u00adg\u00adradtion under aerobic condi\u00adtions. The testing substance becomes carbon dioxide, water and bio mass through microbial degra\u00addation process. The basis is the deter\u00admi\u00adnation of unspe\u00adcific parameters such as dissolved organic carbon, biolo\u00adgical oxygen demand and carbon dioxide evolution.<\/li>\n<\/ul>\n\n\n\n

        Inves\u00adti\u00adgation of substances for biode\u00adgra\u00addation potential in accordance with OECD Guideline \u201cInherent Biode\u00adgra\u00adda\u00adbility\u201d (302):<\/p>\n\n\n\n

          \n
        • The method is suitable for inves\u00adti\u00adgating the inherent aerobic biode\u00adgra\u00adda\u00adbility of organic substances even in the case of restricted ability to decompose of the test substances. It is parti\u00adcu\u00adlarly useful for testing insoluble and\/or volatile materials and based on the deter\u00admi\u00adnation of the released organic carbon and the chemical oxygen demand.<\/li>\n<\/ul>\n\n\n\n

          We conduct individual testing possi\u00adbi\u00adlities in perco\u00adlation pillars, circu\u00adlation apparatus and individual experi\u00admental struc\u00adtures going beyond the standard possi\u00adbi\u00adlities described.<\/p>\n<\/div><\/div>\n\n\n\n

          <\/div>\n\n\n\n

          1<\/sup> partly in coope\u00adration with other laboratories<\/p>\n\n\n\n

          *DIN \u2014 German institute for Standar\u00addization
           **VDI \u2014 The Association of German Engineers<\/p>\n\n\n\n

          <\/div>\n","protected":false},"excerpt":{"rendered":"

          We offer all the required analyses for a chemical or micro\u00adbio\u00adlo\u00adgical assessment of solid samples and soils.1 In parti\u00adcular the following micro\u00adbio\u00adlo\u00adgical parameters can be examined: 1 partly in coope\u00adration with other labora\u00adtories *DIN \u2014 German institute for Standar\u00addization **VDI \u2014 The Association of German Engineers<\/p>\n","protected":false},"author":1,"featured_media":311,"parent":902,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-full-width-image.php","meta":{"wp_typography_post_enhancements_disabled":false,"_hupa_show_title":true,"_hupa_custom_title":"","_hupa_title_css":"","_hupa_select_menu":1,"_hupa_select_sidebar":1,"_hupa_show_social_media":false,"_hupa_select_social_type":0,"_hupa_select_social_color":0,"_hupa_social_media_css":"","_hupa_select_handy_menu":1,"_hupa_select_top_area":1,"_hupa_show_bottom_footer":true,"_hupa_show_top_footer":false,"_hupa_show_widgets_footer":false,"_hupa_sticky_widgets_footer":1,"_hupa_select_header":0,"_hupa_select_container":0,"_hupa_top_area_container":0,"_hupa_main_container":0,"_hupa_select_footer":0,"_hupa_show_menu":true,"_hupa_show_custom_url":false,"_hupa_beitragsbild_url":"","footnotes":""},"class_list":["post-924","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nSoil analyses and biodegradation tests - 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