In chemical analysis, precision plays a pivotal role in determining the dependability and consistency of…
Stepan Reut

Stepan Reut
Business entrepreneur, laboratory owner, laboratory manager, QC manager, laboratory auditor, site assessor for AIHA-LAP, and a bench chemist.
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ISO 17025 QC and ConsultingLab Tips
How to Evaluate the Detection Limit of a Gravimetric Analysis
by Stepan Reutby Stepan ReutIn the gravimetric analysis, we compare the weight of the filter with a sample against…
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ISO 17025 QC and Consulting
ISO 17025-2017. How to comply? “Laboratory activities shall be undertaken impartially…”
by Stepan Reutby Stepan ReutISO 17025-2017. 4.1.1 “Laboratory activities shall be undertaken impartially and structured and managed so as…
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ISO 17025 QC and Consulting
How to build Laboratory Quality Control Charts in Excel (with a free template)
by Stepan Reutby Stepan ReutQuality Control (QC) Charts are used to monitor changes in laboratory accuracy and precision over…
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ISO 17025 QC and Consulting
Difference between Method Detection Limit, Quantification Limit, and Reporting Limit
by Stepan Reutby Stepan ReutEvery chemical laboratory defines the smallest concentration of an analyte that they can measure with…
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I guess it depends on how much money you need. Let’s start with my personal…
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Air Sampling
Should I specify a test method, when I submit my samples to the lab?
by Stepan Reutby Stepan ReutWhen you send your samples for analysis, you should specify the method if it is…
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Lab Startup
Do I need a license to start a laboratory business in Canada?
by Stepan Reutby Stepan ReutUsually, you do not need a license to operate a calibration or chemical testing laboratory…
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Lab Startup
What is the Right Price for an Analytical Instrument for Your Startup Lab?
by Stepan Reutby Stepan ReutWhen you start a new lab, you know what you need, but what can you…
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ISO 17025 QC and Consulting
Intralaboratory and Interlaboratory Relative Errors in Fiber Count by NIOSH 7400
by Stepan Reutby Stepan ReutThere ia a special attention to PCM fiber count method NIOSH 7400 in USA. Mostly…
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