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KAR Laboratories

ULTRA-TRACE 1631 MERCURY ANALYSIS

 

 

KAR was the first laboratory in Michigan and one of the first in the country to offer EPA method 1631 ultra-trace mercury analysis. In anticipation of upcoming regulations designed to protect the Great Lakes fresh water supply, KAR designed and built a Class 10,000 clean room. Then in April of 2000, a PS Analytical Millennium Merlin Ultra-Trace Mercury Analyzer system was installed, operating in Galahad mode with a gold amalgam concentrator trap and atomic fluorescence detector.

Today, KAR laboratories continues to be both the leader and the most experienced, having analyzed well over 25,000 environmental samples for Ultra-Trace Mercury, averaging over 200 investigative samples per month. Compliant with EPA method protocols 1631, 245.7 and 7474, our method reporting limit (MDL) is 0.01 parts per trillion. That's 3 to 4 orders of magnitude more sensitive than the more common Cold Vapor Atomic Absorption method that's typically used for mercury analysis, and is far more sensitive than the regulatory level of 0.5 parts per trillion reporting limit which is common on discharge permits.

We highly recommend that KAR perform the sampling because sample contaminating (false-positive test results) are common with untrained and improperly equipped field sample personnel. The EPA analytical method suggests lab techs wear a face mask if they have mercury-amalgam dental work, a stark reminder of this tests sensitivity and how easy it is to contaminate a sample. Based upon our experience where KAR performed the on-site sampling, we have seen outstanding performance with regards to no contamination and false positive problems. However, you can do the sampling yourself by requesting our KC200 sampling SOP with your bottle order. We maintain over 350 single-purpose, certified-clean pure Teflon sample containers for your sampling requirements and also have successfully certified special glass containers for use in collecting water for ultra-trace mercury analysis.

The expense, training, and experience needed to correctly operate an Ultra-Trace Mercury laboratory is substantial and should not be underestimated. State and federal regulators take mercury very seriously. It is not uncommon for KAR to be asked to re-analyze samples that other, less experienced laboratories have reported positives on mercury.  Sometimes, those cases of a single false-positive bad data point ends up costing the company thousands of dollars in subsequent resampling and permit changes over several years. You can always find a cheaper laboratory but we have seen time and time again, it is not worth the risk.

The KAR Laboratories Ultra-Trace Mercury Laboratory operates 2 fully automated ultra-trace atomic fluorescence analyzers with 2 experienced ultra-trace mercury chemists 

The KAR Laboratories Ultra-Trace Mercury Laboratory operates 2 fully automated ultra-trace atomic fluorescence analyzers with 2 experienced ultra-trace mercury chemists

 

 

 

 

KAR Laboratories, Inc.


269.381.9666* M-F 8-5 EST

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