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3 results about "Serial dilution" patented technology
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A serial dilution is the stepwise dilution of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion. A ten-fold serial dilution could be 1 M, 0.1 M, 0.01 M, 0.001 M ... Serial dilutions are used to accurately create highly diluted solutions as well as solutions for experiments resulting in concentration curves with a logarithmic scale. A tenfold dilution for each step is called a logarithmic dilution or log-dilution, a 3.16-fold (10⁰·⁵-fold) dilution is called a half-logarithmic dilution or half-log dilution, and a 1.78-fold (10⁰·²⁵-fold) dilution is called a quarter-logarithmic dilution or quarter-log dilution. Serial dilutions are widely used in experimental sciences, including biochemistry, pharmacology, microbiology, and physics.
An optimized method and kit for vaginal flora detection reaction reagents
PendingCN122256486AMicrobiological testing/measurementMicroorganism based processesMicroorganismReverse transcriptase
This application relates to the field of in vitro diagnostics and microbial detection technology, and in particular to a method and kit for optimizing reaction reagents for vaginal flora detection. The method includes serial dilution of 2×One-Step SYBR Green reagent and iScript reverse transcriptase in an RT-qPCR system, and supplementing the diluent with 0.2 mmol / L dNTPs and 1 mmol / L Mg. 2+ Achieving the reaction of 10 in an 8 μL reaction system 3 -10 8 Stable amplification of cellular equivalent RNA. This application reduces reagent usage to one-third of the original protocol while maintaining amplification efficiency, sensitivity, and reproducibility, significantly lowering detection costs and making it suitable for high-throughput screening and epidemiological studies.
Owner:HWAN IND SHANGHAI CO LTD
Viability detection and quantification assay of waterborne pathogens by enrichment
A process for detecting viable waterborne pathogens in a water sample, includes enriching at least a portion of the sample with an enrichment broth and taking a first DNA extract at time T0 and a second DNA extract at time T2 after an incubation period. Real-time polymerase chain reaction performed on the DNA extracts yields respective cycle threshold values Ct. The change in Ct provides an indication of viability of the targeted pathogen in the sample. An order of magnitude quantification of the sample can also be performed using a serial dilution technique on the T0 DNA extract. The process has particular application for detecting Legionella, including viable but not culturable cells.
Owner:PHIGENICS LLC