At Envirocheck Inc. you will find a highly trained staff with a fully accredited lab here on site, because we know time is of the essence when you need your results. Our laboratories hold an AIHA for Microbiology/Bacteria and Lead as well as NVLAP for Asbestos. So when it comes to your environmental testing needs remember there is only one name to remember when it comes to getting the service and results you need.
Laboratory Quality Control Summary
ENVIROCHECK thoroughly monitors quality control through a detailed program evaluating and documenting the ability to consistently reproduce analytical results. To accomplish this, we have developed a standard set of protocols that encompass sample collection, handling, analysis and reporting. Data quality is evaluating based on both inter-laboratory control and duplicate analysis.
All PLM (Polarized Light Microscopy), PCM (Phase Contrast Microscopy) and AA (Atomic Absorption) samples taken or received by ENVIROCHECK undergo proper chain-of-custody and log-in documentation. Contamination of bulk samples is controlled by ensuring that only qualified personnel collect the samples in an approved container and that PCM and AA analysis is determined by blind replicate analysis on 10% pf all randomly selected samples by an ENVIROCHECK Quality Control Manager and each microscopist. Each microscopist is issued one reference slide per day for analysis. Additionally, quality control is maintained by the following:
Asbestos Bulk Samples—Polarized Light Microscopy (PLM)
On a quarterly basis, we exchange round robin samples with two other laboratories in our area. Our sample results are compares with the results of the other laboratories for asbestos presence, type and percentage composition. Duplicate and referenced samples are issued on a daily basis by the Quality Control Manager and also are analyzed for asbestos presence, type and percentage. The data for these quality control activities is then compiled and control charts are produced to help interpret the sample results with regard to inter/intra analyst precision and accuracy, as well as inter/intra laboratory precision and accuracy.
Asbestos Air Samples—Phase Contrast Microscopy (PCM)
Each analyst’s Coefficient of Variation (CV) is determined by daily analysis of reference slides. The established CV for the analyst is then used to verify that 10% blind recount of all samples is within acceptable limits. Regular updates if intra/inter analysis and intra/inter laboratory control charts are produced form the data collected. Round robin sample exchange is performed from PCM samples, as was described for PLM.
Fungi by Culture and Direct Examination “Spore Traps”
Each job is individually checked to ensure it is correct before being released. Ten percent of all samples are reanalyzed prior to the results being released. Management reviews the laboratory’s performance and quality of analysis every month.
Standard samples are analyzed every day to find the accuracy and precision of analysis by statistical means. Round robin samples are exchanged with other laboratories to compare and verify our results. EMPAT “Environmental Microbiology Laboratory Accreditation Program” samples are analyzed several times a year.