microbial count Articles
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Investigation into the bacterial pollution levels at various sites along the Diep and Plankenburg river systems, 3 Western Cape, South Africa
This study sought to investigate and compare bacterial contamination levels at six different sites along the Diep and Plankenburg river systems in the Western Cape, South Africa. Surface water and sediment samples were collected monthly from the six selected sampling sites along both river courses between January 2014 and December 2014 and were evaluated for bacterial contaminants. Microbial ...
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Potential of phosphatases for express assessment of self-purification at different types of pollution in running waters
The potential of an express enzymological indicator – phosphatase activity index (PAI) – for assessment of different types of pollution and self-purification potential in running waters was evaluated for three river subcatchments, representative for different ecological situations and impacts. According to the values of correlation coefficients, a significant positive correlation existed ...
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Impact of pollution and seasonal changes on microbial community structure in surface water
We studied the differences in a microbial community structure with respect to the water pollution level and seasonal changes. The determination of phylogenetic groups of Bacteria and Archaea was done using fluorescent in situ hybridization (FISH). The total number of microorganisms was determined by direct counting of DAPI (4′,6-diamidino-2-phenylindole) stained samples using a fluorescence ...
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Water purification: a sustainable technology for rural development
This study deals with the preliminary investigation on combined treatment with the coagulative ability of Moringa oleifera seeds to reduce turbidity and to determine the effectiveness of solar disinfection for the inactivation of Escherichia coli (E. coli) and coliforms on various turbid waters. Turbid water samples showed drastic reduction in microbial load and turbidity at time interval of 60 ...
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Active Air Sampler Comparison Study in Remote Settings
Abstract Environmental monitoring relies heavily on viable active air samplers to provide data about microbial presence in a clean area. In a firm's study to determine a better method of microbial collection, the BioCapt Stainless Steel was compared to their existing sampler and shown to have much higher microbial and mold collection counts. This result is attributed to high collection ...
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MB Bioremediation - Case Study
Patented dry product delivering billions of live non-genetically modified microorganisms for bioremediation of oil, gasoline, diesel, grease or any other hydrocarbon based contamination. MB Bioremediation Drill Cutting Remediation Emergency Public Area Clean-up & Treatment Industrial Remediation Oil Production Pit Remediation Storage Tank Farm Remediation Production Water ...
By Drylet, Inc.
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Comparison of the ability of two grasses viz., Phragmites karka (Retz.) Trin. ex. Steud and Vetiveria zizanioides (L.) Nash to improve surface water quality in a constructed wetland
The aim of the study was to investigate the ability of two grasses viz., Phragmites karka (Retz.) Trin. ex. Steud (Common reed) and Vetiveria zizanioides (L.) Nash (vetiver), to improve the quality of turbid pond water with a high content of Soluble Reactive Phosphates (SRP) in a constructed wetland. Pot experiments with the individual plants showed the removal of SRP from the pond water at a ...
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Investigation of microbial safety of a full-scale ozonation and biological activated carbon process under high humidity and temperature conditions
Microbial safety of a full-scale ozonation and biological activated carbon (BAC) process was investigated by examining pathogens, microbial community and particle counts, with emphasis on the BAC effluent. The process is located at South China, where the average humidity and air temperature were 70–80% and 22–24 °C, respectively. A high diversity of microbial community existed on the BAC media. ...
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Microbiological contamination of water pans in Baringo County
Water pans constitute the main source of rural water supply in Baringo County. This study sought to assess the spatial-temporal variation of total coliforms, Escherichia coli, Fecal streptococcus and Salmonella species in the water pans. A sanitary survey was conducted to observe the potential sources of microbial contamination on the water pans. Water was sampled from one protected and five ...
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Bacterial biofilms formed in arsenic-containing water: biodeterioration of water network materials
The immersion of any material in a water system triggers a surface microbial colonization which simultaneously influences the corrosion behavior of the substratum. The present study was focused on the As(V) influence on the biofilm formation and their consequences on the corrosion behavior of different substrata. Commercial materials used in water distribution networks: alloys based on Fe, Zn ...
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Bidet toilet seats with warm-water tanks: residual chlorine, microbial community, and structural analyses
Despite the reported health-related advantages of the use of warm water in bidets, there are health-related disadvantages associated with the use of these toilet seats, and the bacterial research is sparse. We conducted a survey on the hygienic conditions of 127 warm-water bidet toilet seats in restrooms on a university campus. The spray water from the toilet seats had less residual chlorine ...
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Persistence and impact on microorganisms of Bacillus thuringiensis proteins in some Zimbabwean soils
The persistence of the Bacillus thuringiensis subsp. kurstaki (Btk) toxin (Cry1Ab protein) from Bt maize (MON810, Yieldgard®) residues incorporated in a vertisol (739 g clay kg–1) was investigated. The maize residues were incubated in the soil for 4 weeks, and activity of the toxin in the residues was bioassayed using larvae of the diamondback moth, Plutella xylostella (Lepidoptera: ...
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Bacillus Plate Count Variability
Microbial plate counts are conducted to get at best an approximation of the number of cells present in a sample. Since plate counting is a manual process there are several factors that can affect the results from technician to technician such as: quality of media prepared, incubation temperature and duration, the technician (technique and interpretation), homogenization, and plate count method ...
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The Standard For Total Biomass Measurement in Metalworking Fluids
Metalworking fluids provide a warm and nutrient-rich environment for growth of bacteria and fungus. Once microbial growth is established it can contribute to the breakdown of the metal working fluid emulsion and consequently its ability to lubricate metallic surfaces. Microbes also lower the fluid's pH, leading to corrosion of tool parts and staining of wetted metal surfaces. Uncontrolled ...
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Should Anaerobic Cultures Be Part of GPT?
What Is GPT? The Growth Promotion Test (GPT) determines the appropriateness of the culture media to be used in environmental monitoring sampling. The medium is challenged with a small number of microorganisms to assure the nutritive properties, functionality and media quality are adequate for the detection and enumeration of microbial contaminants. The test is described in the following ...
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Ultrasonic technology in cooling towers
Ultrasound technology is an effective and environmentally friendly method to minimise chemical consumption and improve the efficiency of a cooling tower, says Ander Paz Blazquez. Low-intensity ultrasound has been used for more than a decade in order to control algae and biofilm growth. Latest innovations have concluded that effective algae control is achieved through the use Ultrasound ...
By LG Sonic
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Ninewells Hospital chooses ION Science Tiger VOC detector for use within the assisted conception unit - Case Study
In adherence with the Human Fertilisation and Embryology (HFEA) regulations for air quality in tissue laboratories and to ensure optimum culture conditions for embryos. The Assisted Conception Unit at Ninewells Hospital in Dundee has purchased an ION Science Tiger handheld volatile organic compound (VOC) detector in adherence with the Human Fertilisation and Embryology (HFEA) regulations for air ...
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What Is Microbial Limit Test?
Microbial limit test is performed to determine whether drug products comply with an established specification for microbial quality. USP <61> and USP <62> for objectionable organisms are usually the guidelines for testing as specified by FDA requirements. In most cases, the microbial limit test covers the following three test items: Total Aerobic Microbial Count In this step, the ...
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Application of Flow Cytometry for Microbiological Monitoring of Pharmaceutical Grade Water
Online Water Bioburden Analysis As the main excipient for the pharmaceutical industry, water is integral to patient safety and quality of pharmaceutical products (ISPE 2011). Colony Forming Units (CFU) are defined in the pharmacopoeias as the unit for assessing microbiological quality. CFUs are quantified using the traditional Heterotrophic Plate Count (HPC) method, a three to five-day process ...
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Data Management for Environmental Monitoring in a Pharmaceutical Manufacturing Facility
What Data Management Factors Should be Considered When Setting up Environmental Monitoring in a Pharmaceutical Manufacturing Facility? Pharmaceutical Manufacturing Data Managment is one of the important steps for effective contamination control In a typical pharmaceutical manufacturing plant, there are several important tasks to ensure the product can be handled without being contaminated. All ...
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