scholarly journals EVALUASI HASIL UJI PROFISIENSI UNTUK KOMODITI AIR MINUM DALAM KEMASAN

2008 ◽  
Vol 8 (3) ◽  
pp. 111
Author(s):  
Setyodewati Setyodewati ◽  
Untari Pudjiastuti
Keyword(s):  
Drinking Water ◽  
Proficiency Testing ◽  
Laboratory Testing ◽  
The Other ◽  
Z Score ◽  
Testing Program ◽  
Testing Sample ◽  
Testing Laboratories ◽  
Bottled Drinking Water ◽  
Score Analysis

KAN proficiency testing program on the bottled drinking water conducted on 2004 was participated by 46 testing laboratories. Participant laboratories were asked to test the sample for nitrat, nitrit, ammonium, sulphate Cl, Cn, F, F, Fe, Mn, Pb, Cu, Cd, As and Hg contents. Proficiency testing sample were prepared by provider, which also conduct homogeinity test for the Hg and Cu contents of the sample. As the sample was judged to be homogen, they sent to participant laboratory in 2 packs identified as sample KAN A and KAN B. Laboratory testing results were analyzed by statistical method, started on homogeinity of data, Dixon test and Z-score. The evaluation results shows that only sulphate, Cl, F, Fe and Cu contents could be analyzed among the other 14 parameters, which is could not be evaluated because of the in homogeinity of data provided by the laboratories. The inhomogeinity of data was caused by insufficiency of laboratory’s personnel and equipments. The evaluation of proficiency testing results for sulphate, Cl, F, Fe and Cu contents show only 1 satisfactory result among 5 accredited participants, and 9 satisfactory results among 39 non-accredited participants. The conclusion is based on the Z-score analysis of the evaluated parameters.

scholarly journals Analisis Kinerja Keuangan Dan Pengaruhnya Terhadap Harga Saham (Studi Kasus Pada Pt Aqua Golden Mississippi, Tbk Sebelum Akuisisi Saham Dan Sesudah Akuisisi Saham Oleh Danone Periode Tahun 1997 – 2007)

2010 ◽  
Vol 1 (2) ◽  
pp. 158
Author(s):  
Entar Sutisman ◽  
Sad Lingga Fitriana ◽  
Dianwicaksih Arieftiara
Keyword(s):  
Drinking Water ◽  
Financial Performance ◽  
Significant Influence ◽  
Stock Price ◽  
Stock Exchange ◽  
Corporate Financial Performance ◽  
Measuring Instrument ◽  
Z Score ◽  
Score Analysis

AbstractThis research destination is to understand something effect from financial performance to corporate stock price before acquisition and after acquisition. Selected which corporate is PT Aqua Golden Mississippi, Tbk with measuring instrument z – score analysis Taffler model as measuring instrument corporate financial performance and linear regretion to understand something effect from financial performance to stock price with period 1997 – 2007 be based on corporate year after and before acquisition. That indicate from analysis revenue corporate financial performance after and before acquisition significant influence stock price, but just direction relationship which different. This matter because of there are other factor – factor which influence stock price, one of them is corporate drinking water in package stock not likuid in stock exchange. On the contrary, corporate condition after acquisition not significant, this meaning is increase of financial performance not followed with the increasing of corporate stock price

scholarly journals Use of standard samples for qualification inspections of testing laboratory for analysis safety of meat and meat products

2021 ◽  
pp. 45-53
Author(s):  
L. K. Baybolova ◽  
A. K. Khaimuldinova ◽  
Zh. B. Asirzhanova
Keyword(s):  
Proficiency Testing ◽  
Meat Products ◽  
Test Preparation ◽  
Test Results ◽  
Standard Samples ◽  
Comparative Testing ◽  
Testing Laboratory ◽  
Testing Program ◽  
Testing Laboratories ◽  
Qualification Testing

This article provides insights into qualification testing, interlaboratory comparative testing, and qualification testing programs in testing laboratories that analyze the safety of meat and meat products. Samples with codes OK-MB- 21 were used as a model for interlaboratory comparisons. The uniformity and stability of the CC code was assessed in accordance with GOST R 50779.60-2017 “Statistical methods. Application in proficiency testing through interlaboratory testing ”. Seven laboratories participated in the proficiency testing program. The test preparation procedure was described and the test results determined whether each sample tested was satisfactory or questionable. Participants with unsatisfactory results are encouraged to identify the causes of the alarms, take corrective actions and document them, and identify and eliminate the causes of the unsatisfactory results.

scholarly journals Chemistry proficiency testing programs at national institute for food control (NIFC) in the year 2017

2018 ◽  
Vol 1 (2) ◽  
pp. 40-48
Author(s):  
Cuong Dang Huu ◽  
Keyword(s):  
Quality Assurance ◽  
Quality Management ◽  
Proficiency Testing ◽  
Health Sector ◽  
Management Program ◽  
Technical Competence ◽  
Food Control ◽  
Testing Program ◽  
Testing Laboratories

National Institute for Food Control Proficiency testing plays a very important role in ensuring the quality of testing. Based on the results of the proficiency testing, the managers as well as the relevant members could assess the technical competence of the laboratory. Participating in proficiency testing is an evidence that a laboratory is implementing a quality management program in accordance with ISO/IEC 17025. Through the proficiency testing program, the participating laboratories themselves could evaluate their capabilities and address the causes affecting the quality of tests so as to take measures to ensure better quality assurance. This study provides a snapshot of the testing capacity of food testing laboratories within and outside the health sector based on chemistry proficiency testing conducted by the National Institute for Food Control (NIFC) in 2017.

scholarly journals Quality assurance of test results for the determination of Ingress Protection Code for Ex equipment enclosures

2021 ◽  
Vol 342 ◽  
pp. 01010
Author(s):  
Dan Gabor ◽  
Niculina Vătavu ◽  
Mihai Cătălin Popa ◽  
Florin Păun ◽  
Adrian Marius Jurca
Keyword(s):  
Quality Assurance ◽  
Proficiency Testing ◽  
Laboratory Testing ◽  
Test Results ◽  
International Protection ◽  
Product Certification ◽  
Testing Laboratories ◽  
Certification Body ◽  
Conformity Assessment Body

INSEMEX-OEC is a Conformity Assessment Body for certification activities in accordance with ATEX Directive 2014/34/EU, being accredited by RENAR and notified to Brussels (NB1809). INSEMEXGLI (Group of Testing Laboratories) is the main provider of laboratory testing services for the product certification body INSEMEX-OEC. The test laboratories meet the requirements of the standard SR EN ISO / IEC 17025. This standard requires laboratories to have a procedure in place to monitor the validity of the test results. This monitoring must be planned and, if possible, should include participation in inter-laboratory comparisons or proficiency testing programs. This paper presents some specific issues highlighted during the successful participation of INSEMEX-GLI in a round of inter-laboratory comparisons organized by the Physikalisch-Technische Bundesanstalt from Germany to determine International Protection Code (IP Code) for equipment enclosures.

scholarly journals Tuning of the proficiency testing methodology for soil fertility analysis. Preliminary results

2020 ◽  
Vol 10 ◽  
Author(s):  
Asunción Usón Murillo ◽  
Jesús Betrán Aso
Keyword(s):  
Soil Fertility ◽  
Proficiency Testing ◽  
Z Score ◽  
External Quality Control ◽  
External Quality ◽  
Testing Program ◽  
Consensus Values ◽  
Individual Participant ◽  
Fertility Analysis

This work includes the methodology for carrying out a proficiency testing program between Spanish laboratories that offer soil fertility analysis. Aliquots of each of the two large volume samples were prepared, taken from two surface horizons of soils with marked differences between them. Once the homogeneity of aliquots was tested, one sample of each soil was sent to each of the twenty-one participating laboratories, together with the instructions and a format for the submission of results. Throughout the process, special care was taken to ensure the confidentiality of the results of each individual participant. Once the responses were received, the results were analyzed, consensus values were assigned and each result was evaluated using the “z-score” indicator. The exercise was very well received by the participating laboratories, and has been very effective in characterizing the quality of the results issued. It has been shown that there are parameters with very homogeneous results (pH) compared to others with differences incompatible with the reliable agronomic use of analyses (granulometry, assimilable phosphorus, etc.). The urgent need to maintain this type of intercomparison exercise periodically, as an external quality control that increases the reliability of laboratories, is evident.

Temporal variability of disinfection by-products concentration in urban public water system

2013 ◽  
Vol 14 (4) ◽  
pp. 393-398
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Temporal Variability ◽  
Water System ◽  
The Other ◽  
Major Constituent ◽  
System P ◽  
Public Water System ◽  
Drinking Water Samples ◽  
By Products

The occurrence of trihalomethanes (THMs) was studied in the drinking water samples from urban water supply network of Karachi city that served more than 18 million people. Drinking water samples were collected from 58 locations in summer (May-August) and winter (November-February) seasons. The major constituent of THMs detected was chloroform in winter (92.34%) and summer (93.07%), while the other THMs determined at lower concentrations. Summer and winter concentrations of total THMs at places exceed the levels regulated by UEPA (80 μg l-1) and WHO (100 μg l-1). GIS linked temporal variability in two seasons showed significantly higher median concentration (2.5%-23.06%) of THMs compared to winter.

Enteric viruses in drinking water supplies

2002 ◽  
Vol 2 (3) ◽  
pp. 17-22
Author(s):  
A.P. Wyn-Jones ◽  
J. Watkins ◽  
C. Francis ◽  
M. Laverick ◽  
J. Sellwood
Keyword(s):  
Drinking Water ◽  
Heavy Rainfall ◽  
Liquid Culture ◽  
Plaque Assay ◽  
Enteric Viruses ◽  
Enteric Virus ◽  
The Other ◽  
Raw Water ◽  
Rt Pcr ◽  
Water Supplies

Two rural spring drinking water supplies were studied for their enteric virus levels. In one, serving about 30 dwellings, the water was chlorinated before distribution; in the other, which served a dairy and six dwellings the water was not treated. Samples of treated (40 l) and untreated (20 l) water were taken under normal and heavy rainfall conditions over a six weeks period and concentrated by adsorption/elution and organic flocculation. Infectious enterovirus in concentrates was detected in liquid culture and enumerated by plaque assay, both in BGM cells, and concentrates were also analysed by RT-PCR. Viruses were found in both raw water supplies. Rural supplies need to be analysed for viruses as well as bacterial and protozoan pathogens if the full microbial hazard is to be determined.

Sign in / Sign up

Export Citation Format

Share Document