Brooks Rand Labs has worked closely with the EPA on all of the following methods. In fact many of these methods were first published by Brooks Rand Labs and offered commercially for a number of years prior to the EPA adopting them. We are proud of the significant contribution that many of our present and past employees have made in advancing what are now widely accepted methods.
 Method 1630:
Methyl Mercury in Water by Distillation, Aqueous Ethylation, Purge and Trap, and CVAFS, EPA 821-R-01-020, January 2001 - 1630.pdf (495KB)
Method 1631 Revision E:
Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry, EPA 821-R-02-019, August 2002 - 1631E.pdf (1568KB)
Guidance for Implementation and Use of EPA Method 1631:
For the Determination of Low Level Mercury (40 CFR part 136), EPA 821-R-01-023 March 2001 - 1631guid.pdf (199KB)
Appendix to Method 1631:
Total Mercury in Tissue, Sludge, Sediment, and Soil by Acid Digestion and BrCl Oxidation, EPA 821-R-01-013, January 2001 - app1631.pdf (51KB)
Method 1632, Revision A:
Chemical Speciation of Arsenic in Water and Tissue by Hydride Generation Quartz Furnace Atomic Absorption Spectrometry, EPA 821-R-01-006, January 2001 - 1632a.pdf (150KB)
Method 1638:
Determination of Trace Elements in Ambient Waters by Inductively Coupled Plasma - Mass Spectrometry, EPA 821-R-96-005, January 1996 - 1638_r3.pdf (186KB)
Method 1640:
Determination of Trace Elements in Water by Preconcentration and Inductively Coupled Plasma - Mass Spectrometry, EPA 821-R-96-007, Draft April 1997 - 1640.pdf (220KB)
Method 1669:
Sampling Ambient Water for Trace Metals at EPA Water Quality Criteria Levels, EPA 821-R-96-011, July 1996 - 1669.pdf (141KB)
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