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Showing 1 to 17 of 17 for “"Colilert"”.
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Investigation of mesophilic Aeromonas: response to hydrogen peroxide and role in false-positive Colilert reaction.
… a potential source of intestinal disorders. The Colilert defmed substrate technology system was developed as a one-step detection of both coliforms and E. coli while suppressing non-coliform heterotrophic growth. Aeromonas species were previously shown to cause production of falsepositive …
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Study of four new, field-based, microbiological tests : verification of the hydrogen sulfide (H₂S), Easygel®, Colilert and Petrifilm(tm) tests
… the enumerative Easygel®, test, the 10-mL P/A Colilert test and enumerative PetrifilmTM test. However, the accuracy of these tests has never verified or established. The objective of this thesis is fourfold: (1) to verify the accuracy of the four field-based tests: the H2S tests …
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Comparison of EC-Kit with Quanti-Tray[tm] : testing, verification, and drinking water quality mapping in Capiz Province, Philippines
… for Escherichia coli and total coliform: the Colilert[tm] 10-milliliter presence/absence test and 3MTMS Petrifilm[tm] test. This work was executed by analyzing 521 water samples collected in Capiz Province, Philippines as well as 40 water samples from the Charles River in Cambridge, …
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Evaluation of methodology for detection and quantification of coliform bacteria and their survival in soil and water.
… to be carried out within an accepted timeframe, Colilert 18(TM) was validated for the detection and enumeration of coliform bacteria in potable water and was compared to the accepted standard method, membrane filtration. Colilert 18(TM) was further validated for use with soil samples to allow the …
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Phenotypic and Genotypic Characteristics for Escherichia coli strains responsible for bacterial bloom events in Australia
… in recent bloom events assessed using the Colilert-18 system was investigated. Frequency of Klebsiella capsules in E. coli was only 7% and 23 different Klebsiella capsule types were detected. All bloom strains were encapsulated and seven Klebsiella capsule types were detected among the …
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Phenotypic and Genotypic Characteristics for Escherichia coli strains responsible for bacterial bloom events in Australia
… in recent bloom events assessed using the Colilert-18 system was investigated. Frequency of Klebsiella capsules in E. coli was only 7% and 23 different Klebsiella capsule types were detected. All bloom strains were encapsulated and seven Klebsiella capsule types were detected among the …
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Colonization of Biofilms in a Freshwater Stream by Escherichia Coli and Bacteroides
… total coliforms and E. coli utilizing an IDEXX Colilert-18 test, and presence of Bacteroides was determined utilizing a PCR assay on DNA extracted from water and biofilm samples. E. coli was present in all water and biofilm samples collected with no significant correlation between the two. …
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Characterization of E. coli strains from rural communities in the Vhembe District (Limpopo South Africa)
… A total of 399 samples were analysed using Colilert® Quanti-trays®/2000 method to detect the presence of Escherichia coli. Positive E. coli samples were further identified using multiplex polymerase chain reaction (m-PCR) to determine the pathogenic strains of E. coli. Transmission pathways …
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Host Specific Microbial Source Tracking and Quantification Using the Partial 16SrRNA Gene Sequence of Bacteroides on the Wilson's Creek Tributary in Southwest Missouri
… 16SrRNA marker genes was used, along the with Colilert E. coli MPN enumeration method for this survey. There were multiple occasions at each site where the E. coli MPN exceeded the Missouri DNR recommended safety standard of 126MPN/100ml. Bovine-associated Bacteroides were detected at every …
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Monitoring and evaluation of household water treatment and safe storage technologies : the sustained use of the KOSIM ceramic water filter in northern region Ghana
… also conducted water quality analysis using the Colilert® and the 3MTM PetrifilmTM tests to evaluate the performance of the KOSIM filter in the field. Forty-six percent of PHW's rural customers were still using the KOSIM ceramic pot filter at the time of the interview. The survey results …
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Quantifying Potential Sources of Microbial Contamination in Household Drinking Water Samples
… TC and EC contamination were quantified via the Colilert (www.idexx.com) defined substrate method for most probable number (MPN) of EC and TC per 100 mL of water. Of the 538 samples collected, 41% (n=221) were positive for TC and 10% (n=53) for EC. Chemical parameters were not statistically …
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Evaluating human fecal contamination sources in Kranji Reservoir Catchment, Singapore
… for E. coli using Hach m-ColiBlue24@ and IDEXX Colilert Quanti-Tray*/2000. Touchdown PCR and Nested-PCR HF183F assays were used to assess the absence or presence of the HF marker in Kranji catchment. Selected positive HF marker samples were sequenced and mapped using a phylogenetic tree to …
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Prevalence of Salmonella and E. coli on Produce from Seattle Farmers Markets
… the <italic>Salmonella</italic> invA gene. Rapid Colilert® tests, paired with Quanti-Tray®/2000 (IDEXX), were adapted for qualitative and quantitative detection of generic <italic>E. coli</italic> on produce. Following elution with phosphate buffered saline (PBS), positive wells were enumerated …
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Characterization of diarrhoeagenic escherichia coli and human norovirus from daycare centres in the Vhembe Region of the Limpopo Province
… and handwash samples were analysed using the Colilert®/ Quanti-tray® 2000 technique and stool samples were cultured on Eosin Methylene Blue agar: presumptive E. coli isolates were confirmed using three biochemical tests (Kliglers Iron Agar test, Indole test and Urease test). Total nucleic acid …
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Potential groundwater contamination from pit latrines in Ga-Maja and Reefentse
… and drinking purposes. This study used the Colilert™ technique to determine indicator organisms, and the agar diffusion method to determine antibiotic resistance in isolated pathogenic bacteria. Isolates were assayed against ten antibiotics using the Kirby Bauer disc diffusion technique. …
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Unveiling Origins and Dynamics of Fecal Indicator Bacteria in an Urban Creek
… enabling direct comparison between cdPCR and Colilert methods for contamination detection. This approach highlights the potential of cdPCR as a complementary tool to traditional methods in MST studies, offering a more detailed and efficient approach for water quality monitoring and management. …