Benefit - Problem - Need - Value	CleanAir's System	What To Look For	Bias Error	Possible Outcome
Accuracy of Analysis
Project specific calibrations for each analyte.	Full instrument calibration before and after sample analysis for each project. All calibration data are included in our report.	Standard practice with many labs would be perform only a single point calibration and compare that to a previous full calibration curve. Look for the calibration dates listed on our calibration page.	A given instrument can drift in a non-linear fashion. This might not be noticed with only a single point calibration during analysis of a given project.	Drift in certain ranges could cause overestimation of analyte concentrations.
Many methods only require three calibration points to generate a curve. This is the bare minimum for establishing a straight-line relationship.	All of our calibration curves include at least one more point than required by method. This is a minimum of four calibration points with a coefficient of regression (R2) value greater than 0.995.	Calibration curves and least-squares regression data. Look for coefficient of regression (R2) greater than 0.995	With an R2 of 0.995 or greater, the possible error is around 0.5%. A lower R2 value suggests a greater possibility of error.	The calibration curve is not very accurate or precise when the R2 value is under 0.995.
Samples may not fall within the concentration range the instrument was calibrated for.	Calibration curves are customized to each project, minimizing the need for diluting samples	That the calibration curve brackets all reported concentrations for the samples.	Note: sample dilution may be required, but should be kept to a minimum.	Diluting samples can introduce error into the analysis
Customer Service
Customer may not be able to reach lab personnel to ask questions regarding: Status of samples, questions about analysis technique, etc.	We carry cell phones so your questions can be answered whenever you need	Contact information page on our web site (email, phone, fax, cell phone).		Not reaching the lab might mean the wrong analyses are performed, etc.
	110% money back guarantee on the accuracy and reliability of our results.	Guarantee is posted on our web site.
General Lab Procedures
Quality Reporting	Reports include all raw data and sample calculations, so clients can overlook every aspect of the analysis	All raw data, chromatograms, sample calculations, etc.		Inaccurate data.
Sample Receiving	Strictly follow chain-of-custody and login procedures			Possible tampering of samples, sample identification mistakes
Ethical Standards	Strong commitment to the ethical standards of our profession
Flexible analysis	Able to develop procedures for analyses that do not have clearly stated methods.		Other labs may not be able to perform analysis for requested analytes/sample matrices