There is a nomenclature change for Pseudomonas aeruginosa in Pseudomonas paraeruginosa. Phylogenomic (the evolutionary history of a particular group) and comparative genomic studies robustly demarcate two distinct clades of Pseudomonas aeruginosa strains. The strains will be transferred from an outlier clade to a novel species Pseudomonas paraeruginosa. This change has now been implemented in the WDCM database, and …

Campylobacter spp. is a serious food pathogen. If you are looking for this pathogen, you want to detect this bacteria down to the last cell. The growth on mCCDA is part of the analysis. Besides the incubation conditions, the quality of the mCCDA medium is crucial to the analysis. There are two ISO methods available …

Biosisto offers reference materials that match the strains mentioned in these ISO standards for cosmetics. These reference materials are essential for quality control to ensure that microbiological testing methods function correctly and provide accurate results. ISO 21149 Cosmetics — Microbiology — Enumeration and detection of aerobic mesophilic bacteria This standard specifies a method for detecting …

English version Working safely in a microbiological laboratory is crucial for the health of employees and the prevention of the spread of micro-organisms. Contaminations can be prevented if safety regulations are followed. Guidelines for safe working can be found in various documents: ISO 7218 Microbiology of food and animal feeding stuffs – General requirements and …

Accreditation stands for reliability. Accredited laboratories work according to standardized and validated procedures that yield reliable test results. Every food manufacturer wants to ensure their products are safe, but how can they be sure? By having their laboratory accredited, they can offer their customers greater reliability assurance. Because the accreditation process also explicitly examines the …

Process control of microbiological analyses is essential for quality control. Laboratories that carry out microbiological analyses for quality control are advised to carry out a daily process control. However, not everyone realizes how useful and necessary this is. Laboratories that carry out microbiological analyses for quality control are advised to carry out a daily process …

Listeria monocytogenes challenge testing is now worthy of accreditation. From now on, the Council for Accreditation (RvA) considers challenge tests for Listeria monocytogenes within microbiology to be worthy of accreditation. This gives test laboratories the opportunity to submit an accreditation or extension request for this. Biosisto has 11 Listeria Certified Reference Materials available to help …

Listeria monocytogenes is a serious food pathogen. If you are looking for this pathogen, you want to detect this bacteria down to the last cell. The quality of the ALOA medium used is a crucial part of the analysis. Research shows that there is a difference in electivity between suppliers. The color of the colony …

Two DRBC quality issues you should know. This article may help you troubleshoot quality issues with the DRBC medium. DRBC medium is described in ISO 21527-1 for the isolation and enumeration of yeast and moulds. DRBC is the abbreviation of Dichloran Rose-Bengal Chloramphenicol Agar. Rose-bengal photo-oxidizes to form toxic compounds. Store DRBC plates in the …

There is a lot of information on the Certificate of Analysis. What the information tells you is explanted of the Certificate of Analysis over here More information about accreditation you will find at What is the difference between accreditated and not accreditated CRM? …

Process Control or Internal Quality Control (IQC) Process control also known as internal quality control or first-line control, is an important tool to monitor the whole analyzing process, day after day. All facets in the analysis are included with this quality check. The process control can be performed using Certified Reference Materials (CRM’s). To monitor …

Definitions according to ISO 11133 Performance of culture medium Response of a culture medium to challenge by test organisms under defined conditions expressed in one or more functions such as productivity, selectivity, selectivity and specificity. The incubation conditions of the media are mentioned in the corresponding analyses standard. 1. Productivity of culture medium Level of …

When quality managers at food manufacturing companies make smart use of the microbiological analysis results, they can enhance the accuracy of the samples’ microbiological values. Any deviations in values are also picked up sooner, which benefits food safety. How do laboratories currently work? Accredited microbiological laboratories are required to perform internal quality controls. Non-accredited laboratories …

With hibernate project 2 we develop new products stored at -20°C. The new products must be homogeneous, stable for at least six months, and stable during transport. We produce microbiological (certified) reference materials for quality checks at microbiological laboratories in the context of food safety criteria and process hygiene criteria. The reference material is stored …