scholarly journals Operational Basin Larvicide Evaluations in Northern Cook County, Illinois During 2019 and 2020

2021 ◽  
Vol 37 (3) ◽  
pp. 179-181
Author(s):  
Justin E. Harbison ◽  
Patrick Irwin ◽  
Mark E. Clifton
Keyword(s):  
Quality Control ◽  
Cook County ◽  
Water Soluble ◽  
Catch Basin ◽  
Standardized Protocol ◽  
Catch Basins ◽  
Routine Quality Control

ABSTRACT Over the course of 2019 and 2020, 7 larvicide formulations for use in catch basins were evaluated using a standardized pass/fail protocol. A comparison between 1- and 2-pouch doses of VectoLex® water-soluble pouches (WSP; 10 g per pouch) and 20 g of VectoLex FG (loose granules) suggests that the WSP formulation may have a shorter duration than the FG formulation. Results also suggest that 20 g doses of each of 2 larvicides, Duplex™-G and Sumilarv® 0.5G, may have a minimum effective duration in basins for approximately 40 days. A 20 g dose of Altosid® XR-G and a single briquet Altosid XR each had an observed minimum effective duration of 20 days. Sustain MBG had an observed duration of only 7 wk posttreatment. These observations provide evidence that, in some locations, 20 g granular applications may have a longer effective duration than a single briquet. This work highlights the utility of applying a standardized protocol for routine quality control assessments of the thousands of catch basin larvicide applications performed seasonally by mosquito abatement districts.

UV spectroscopic method for determination of phenytoin in bulk and injection forms

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Quality Control ◽  
Spectrophotometric Method ◽  
Spectroscopic Method ◽  
Ich Guidelines ◽  
Precision And Accuracy ◽  
Routine Quality Control

Recent study was conducted to develop a simple UV spectrophotometric method to determine Phenytoin in bulk and injection form according to official requirement and validate as per ICH guidelines. λmax of Phenytoin was found 202 nm. Linearity existed perceived in the concentration assortment 2-8 μg/ml (r2 = 0.999) for the method. The method was validated pertaining to linearity, precision and accuracy studies, LOD and LOQ consistent with ICH guidelines. The existent method was establish to be simple, linear, precise, accurate as well as sensitive and can be applied for routine quality control enquiry for the analysis of Phenytoin in bulk and injection form.

DEVELOPMENT OF HPTLC METHOD FOR SIMULTANEOUS ESTIMATION OF CIPROFLOXACIN AND ORNIDAZOLE IN COMBINED DOSAGE FORM

INDIAN DRUGS ◽  
2013 ◽  
Vol 50 (05) ◽  
pp. 36-43
Author(s):  
N. R Dighade ◽  
◽  
M. D Shende ◽  
A. V Kasture
Keyword(s):  
Quality Control ◽  
High Resolution ◽  
Thin Layer ◽  
Mobile Phase ◽  
High Performance ◽  
Dosage Form ◽  
Simultaneous Estimation ◽  
Ich Guidelines ◽  
Hptlc Method ◽  
Routine Quality Control

A simple and accurate high performance thin layer chromatographic (HPLTC) method has been developed and validated as per ICH guidelines for estimations of Ciprofloxacin (CP) and Ornidazole (ORN) in combined dosage form. The mobile phase was acetonitrile: toluene: water and triethylamine (5.5:1.8:1.5:1.6 V/V) was found to be best which gave high resolution with Rf 0.16 and 0.84 for ciprofloxacin and ornidazole respectively. The linearity of ciprofloxacin and ornidazole was found to be in the range of 0.4 to 0.8 µg/mL and 0.4 to 0.8 µg/mL, respectively. The coefficient of correlation (r2 ) was found to be greater than 0.989 for both the components by this method. The tablet analyses result (n = 5) were found to be > 100.84 % by HPTLC for both the components. The proposed method was found to be simple, accurate and suitable for routine quality control of marketed formulations containing these drugs.

scholarly journals Análisis inmunofenotípico de muestras normales de médula ósea: aplicaciones en el control de calidad en los laboratorios de citometría

2010 ◽  
Vol 15 (3) ◽  
pp. 206 ◽  
Author(s):  
Diana Carolina Roa-Higuera ◽  
Susana Fiorentino-Gómez ◽  
Viviana Marcela Rodríguez-Pardo ◽  
Alba Myriam Campos-Arenas ◽  
Elvira Antonia Infante-Acosta ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Quality Control ◽  
Reference Values ◽  
Cell Populations ◽  
Normal Bone Marrow ◽  
Normal Bone ◽  
Cell Subpopulations ◽  
Hematologic Neoplasia ◽  
Routine Quality Control ◽  
Normal Leukocyte

<p><strong></strong><strong>Objective.</strong> To describe a standardized flow cytometry protocol for the relative and absolute quantification of hematopoietic cell subpopulations from normal bone marrow, and to evaluate the expression of different lineage-specific cell markers with a reactivity associated to cell differentiation to be used as part of the routine quality control in cytometry laboratories. <strong>Materials and methods. </strong>The immunophenotypical analysis of different cell subpopulations was done with samples from normal bone marrow using a panel of monoclonal and polyclonal antibodies useful in the characterization of acute leukemias with four different fluorescences, by means of a protocol that combines cell labeling of membrane and cytoplasm antigens. Expression analysis was done in terms of mean fluorescence intensity (MFI). Fluorescent beads at a known concentration were added for calculating the absolute count of cells.  <strong>Results.</strong> The antibody panel used allowed the identification and quantification of different normal leukocyte subpopulations of lymphatic and myeloid origin, including CD34+ stem cells and more differentiated cell populations in the granulocytic, monocytic, and erythroid cell lines. We established reference values for cell populations and cell marker expression ranges as part of routine quality control of cytometry laboratories. <strong>Conclusion.</strong> Immunophenotypic patterns identified as well as absolute and relative reference values for the different normal leukocyte populations from bone marrow can be used by cytometry laboratories as a basis for establishing reference parameters in phenotypic analyses of hematologic neoplasia.<strong> </strong></p> <p><strong>Key words: </strong>multiparametric flow cytometry, immunophenotype, hematologic neoplasia, normal bone marrow, reference values, quality control.</p>

Simplified approach to confidence limited in radioimmunassay.

1980 ◽  
Vol 26 (6) ◽  
pp. 763-765 ◽  
Author(s):  
R C Baxter
Keyword(s):  
Quality Control ◽  
Mean Value ◽  
Confidence Limits ◽  
Simple Method ◽  
Response Variable ◽  
Simplified Approach ◽  
Quadratic Curve ◽  
Wide Range ◽  
Advanced Computing ◽  
Routine Quality Control

Abstract A simple method of calculating confidence limits for radioimmunoassay data is presented. The method involves the use of the within-assay variation in dose estimate of three routine quality-control specimens, measured in repeated assays, to estimate the confidence limits for results on unknown samples. Results for control specimens are combined by calculating the unique quadratic curve fitting a graph of within-assay standard deviation vs mean value for each control. This method requires no special data accumulation or advanced computing equipment. For cortisol, lutropin, and thyroxine radioimmunoassays, confidence limits calculated in this way have been compared with those calculated from the variance of the response variable “B/B0” in repeated standard curves. Both methods agree well with actual limits observed when plasma pools containing a wide range of hormone concentrations are assayed repeatedly.

Addition of triglyceride to serum for use in quality control and reference.

1976 ◽  
Vol 22 (8) ◽  
pp. 1299-1301 ◽  
Author(s):  
D P Bonderman ◽  
G J Proksch ◽  
P W Bonderman
Keyword(s):  
Quality Control ◽  
Human Serum ◽  
Room Temperature ◽  
Water Soluble ◽  
Bovine Serum Albumin Solution ◽  
Albumin Solution ◽  
Protein Preparation ◽  
Simple Method ◽  
Analytical Recovery ◽  
Triton X

Abstract We describe a simple method in which a water-soluble mixture of triocatanoin and a surfactant, "Triton X-114," are used in preparing solutions of triglycerides (triacylglycerols) in either human serum, solutions of albumin, or water. Analytical recovery added triglyceride was quantitative by two methods. The addition did not affect results of analyses for 18 other commonly measured constitutents of serum. When the triglyceride was added to either lipid-depleted human serum or bovine serum albumin solution and lyophilized, subsequent solutions were clear. The triglyceride/protein preparation was stable in lyophilized form for a year and in reconstituted serum for five days at 5 degrees C. Aquenous solutions appear to be stable indefinitely at room temperature.

Use of Tris Buffers for Quality Control of Blood pH

1974 ◽  
Vol 20 (10) ◽  
pp. 1337-1340 ◽  
Author(s):  
Jack H Ladenson ◽  
Carl H Smith ◽  
David N Dietzler ◽  
J E Davis
Keyword(s):  
Quality Control ◽  
Control Program ◽  
Hydrogen Ion ◽  
National Bureau ◽  
Quality Control Program ◽  
Blood Ph ◽  
Relative Standard ◽  
Ion Activity ◽  
Primary Standards ◽  
Routine Quality Control

Abstract Tris(hydroxymethyl)aminomethane buffers have been established as sensitive and convenient indicators of the reliability of blood pH analysis. These buffers were compatible for routine use with blood-pH equipment from major manufacturers, except for two instruments. A seven-month study demonstrated the necessity of a routine quality-control program, as well as the need for systematic cleaning and maintenance of pH equipment. Tris(hydroxymethyl)aminomethane buffers were found not to be suitable as primary standards because we could not obtain the stated values with commercial pH equipment that had been standardized with phosphate buffers from the National Bureau of Standards. The relative standard deviation for measurement of hydrogen ion activity, 4.1% , indicates a need for improvement in the design and operation of equipment for the measurement of blood pH.

A New Verification Film System for Routine Quality Control of Radiation Fields: Kodak EC-L

2000 ◽  
Vol 176 (6) ◽  
pp. 274-277 ◽  
Author(s):  
Anja Hermann ◽  
Klaus Bratengeier ◽  
Annette Priske ◽  
Michael Flentje
Keyword(s):  
Quality Control ◽  
Film System ◽  
Radiation Fields ◽  
Routine Quality Control

scholarly journals An Operational Evaluation of 3 Methoprene Larvicide Formulations for Use Against Mosquitoes in Catch Basins

2018 ◽  
Vol 12 ◽  
pp. 117863021876053 ◽  
Author(s):  
Justin E Harbison ◽  
Amy B Runde ◽  
Marlon Henry ◽  
Bridget Hulsebosch ◽  
Alka Meresh ◽  
...  
Keyword(s):  
Cook County ◽  
The Other ◽  
Storm Water ◽  
Effective Control ◽  
Control Effectiveness ◽  
North Shore ◽  
The North ◽  
Control Failure ◽  
Degree Of Control ◽  
Catch Basins

Effectiveness in controlling mosquitoes in storm water catch basins in the North Shore Mosquito Abatement District (northeastern Cook County, Illinois) was determined for 3 formulations of methoprene-based larvicides (Altosid XR 150-day Briquets, Altosid 30-day Pellets, Altosid 30-day Granules) in 2017 using a pass/fail evaluation criterion, in which emergence of a single adult from pupae collected from the basin constituted a control failure. Over the course of the 16-week study, basins receiving the 150-day briquets were treated once and basins receiving the pellet and granular formulations were treated every 4 weeks, with the first treatment occurring during the last week of May. Untreated basins were also observed for comparison with the treated basins. Over the course of the study, adult mosquitoes emerged from pupae collected in 94.2% of the untreated basins that contained pupae. All of the formulations evaluated in the study demonstrated some degree of control compared with the untreated basins, with pupae successfully emerging as adults in 64.6%, 55.5%, and 21.8% of samples from 150-day briquet, 30-day tablet, and 30-day pellet–treated basins that contained pupae, respectively. Pellets reapplied every 28 days provided significantly more effective control than the other formulations. The simple pass/fail criterion for evaluating control effectiveness proved to be a useful procedure for comparing effectiveness to untreated basins and among treatments.

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