Laboratory Analysis Services

Mercury Sorbent Trap

With the rise of mercury monitoring requirements, the analysis of sorbent trap data will become ever more important. Do you have a plan to help free the data trapped inside that sorbent? Clean Air Engineering Laboratory Services is fully trained and capable of helping you with all your sorbent trap analysis needs

  • We are knowledgeable in the current EPA methods used for Sorbent Trap Analysis including Method 30B, and Method 7473.
  • We use state of the art instrumentation
  • We offer a standard turnaround time of 5 working days. We also offer RUSH analysis!
  • Our equipment is state of the art, and widely recognized as the industry standard:
  • A wide analytical range: 0.5ng – 3,000,000ng
  • Every analyzer is annually certified with a Bias Test, MDL Test, and Spike Recovery Study.
  • Extremely sensitive instruments able to produce extremely low MDL’s.
Ion Chromatography

Clean Air Engineering Laboratory Services, unlike many commercaial labs understands complex air sample matrices which add to analytical complexity.

  • We routinely change configurations on our instrumentation to ensure that all samples are analyzed properly regardless of the sample matrix.
  • Many laboratories only analyze 10% of samples in duplicate, we perform duplicate analysis on ALL samples, standards, and blanks.
  • We verify peak retention-time and peak identification by performing a matrix spike on a minimum of ten percent of all samples.
  • We prepare all our standards at our facilities with ACS certified chemicals. A traceable certificate of analysis for each chemical is available upon request.
  • Our analysts are routinely tested using a third party audit system to ensure accuracy and quality.
  • We examine each chromatogram to ensure integration is correct and consistent; the changes made are recorded and available for review.
  • We make separate standards from the same stock solution as the calibration points to ensure consistent preparation of calibration points.
  • We use a standard made from a separately prepared stock solution to test the accuracy of the curve and the quality of the reagents used to make it.
  • We do full pre and post test calibrations for each project and then use the averaged to help negate instrument drift. This can be especially important on large projects.
Gas Chromatography

What makes us so different? We provide you with more than you expect!

While many laboratories will take short cuts to reduce the cost, we will not stop until we are sure that the report we deliver to you is the most accurate possible.

  • A series of at least 3 standards are prepared and analyzed in triplicate before and after each analysis. The resulting calibration curve is held to a set of rigorous QC standards.
  • Calibration verification and matrix blank are performed after a set of samples to ensure the measuremnts have not drifed over the course of longer analyses
  • Each sample is analyzed in triplicate, and the relative difference can be no more than 5% of the average for the three injections.
  • Spike and recovery studies are done to ensure that there is no significant loss of sample during the analysis period.

Our state-of-the-art environmentally controlled laboratory is designed to allow the highest accuracy and reliability while obtaining gravimetric weights.

  • Our balances are extremely accurate at obtaining readings as low as 0.01 mg. This is an order of magnitude lower than EPA method requirements. This assures accurate and reliable mass measurements. Our balances are also linked to a computer with weights being transmitted to the data file by digital uplinking. This ensures that weights are never incorrectly recorded by manual errors.
  • Other laboratories might require the use of an air ionization gun in attempts to remove static build-up from samples. Static build-up can be a large bottleneck when trying to obtain constant weights. Clean Air Engineering Laboratory Services has developed a proprietary techniques of preventing static build-up on all sample containers. This includes inside of our desiccators to prevent static build-up on all samples. While we do have an air ionization gun available, its use is generally no longer necessary. We believe this greatly enhances the quality and reliability of our gravimetrics capabilities.
  • All solutions are evaporated in lightweight, inert Teflon® containers that minimize any effects of container weight. Many labs will used 250 ml glass beakers that can weigh 100 grams. This can marginalize a small weight difference such as 1 mg. Our inert Teflon® containers weigh nominally 4 grams each. This minimizes container weight effects.
  • Does your laboratory publish a detection limit for Gravimetrics Analysis? CleanAir® does! This fact can give you confidence in our measurements in the one milligram range.
  • All CleanAir Engineering Laboratory Services’ gravimetrics analyst’s participate in third party proficiency testing on a semi-annual basis. This participation includes both filters and spiked impinger solutions. Our analyst’s must keep a record of passing two PT Audits per year.
  • EPA guidance and state regulations require a very detailed report. CleanAir® reports every bit of information any reviewer would need to reproduce our results. These reports include photos of residues. We take the time to compile and double-check all of these data. While stack test reports often may get through agencies with only summary analytical data as an appendix, it’s not unusual for the agency to request all appropriate documentation. To ensure a seamless process, we include all data (including daily balance calibrations with certified Class 1 weights) for review.
  • Our state-of-the-art environmentally controlled laboratory is designed to allow the highest accuracy and reliability while obtaining gravimetric weights.
Ash Resistivity

A combination of laboratory test and computer modeling, using time tested methods and equipment, allows either direct measurement and/or prediction of pertinent information. The data we generate can be of great interest to the engineering and operational staff of a utility. The information allows them to determine whether the fly ash produced from a given coal will be compatible with their control device.

Clean Air Engineering Laboratory Services can help you determine four key characteristics of fly ash that determine the efficiency with which it is collected in an ESP. These properties are:

  • Particle Size Distribution
  • Chemical Composition
  • Resistivity
  • Particle Morphology