Conventional Chemistry Instrumentation


cc01Lachat QuikChem 8000 Flow Injection Analyzer


The QuikChem 8000 is a state-of-the-art system that automates wet chemical determinations using the principle of flow injection analysis. The WSLH utilizes these systems for the analysis of nitrogen, phosphorus, sulfate, chloride, ammonia, silica and fluoride. The systems include the following features:

  • Fully automated
  • Outstanding detection capability for nitrogen, phosphorus and silica
  • Fully integrated quality control software
  • Facilitates rapid turnaround and large sample throughput


cc02Radiometer Auto-titration System


The auto-titrator is a fully automated system used to simultaneously measure conductivity, pH and alkalinity. The system can also be used to determine alkalinity using the Gran Plot method, which is the preferred technique for studying low ionic strength waters.




BeckmanCoulterBeckman Coulter Multisizer 3


The Beckman Coulter Multisizer 3 allows for simultaneous counting and sizing of particles in a homogenous suspension. It offers a high degree of flexibility in measuring size ranges less than 32 µm. By combining the Beckman data with sieve results, the WSLH can mathematically estimate the complete particle size distribution in a sample from 500 to below 0.4 µm.


cc03Perkin-Elmer Flow Injection Mercury System (FIMS)


The FIMS is a compact atomic absorption spectrometer dedicated to the determination of mercury. Based on flow injection analysis technique, the system is fully automated, fast and very precise. It is used for routine analysis of environmental samples for mercury.




cc04Perkin-Elmer 4100ZL and 5100Z Atomic Absorption Spectrometer


Perkin-Elmer Models 4100ZL and 5100Z are high-performance graphite furnace atomic absorption spectrometers. They use Zeeman effect background correction with an alternating magnetic field and heated furnace for accurate background compensation, optimum analytical reliability, and minimization of interferences. The instruments provide outstanding detection limits for analysis of routine metals in drinking water and moderately polluted surface waters and wastes.


ICP-OESPerkin-Elmer 5300 Dual-View Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES)


  • Dual-view: radial and axial viewing options
  • Sensitivity near graphite furnace for many metals
  • 29 elements routinely analyzed
  • Fully automated
  • Very robust with outstanding sample throughput


cc06Dionex Model DX-500 Ion Chromatograph


The Dionex DX-500 is a high-performance, ion chromatography system. The system can perform a multitude of ion chromatography applications using conductivity detection. It has outstanding signal-to-noise performance that allows identification of barely detectable peaks. It is the method of choice for anion analysis for researchers studying low ionic strength lakes and precipitation where low detection limits are a desired.


Special Studies


  • Green Bay Mass Balance Study (1988-1990)
  • Lake Michigan Tributary Monitoring Study (1994-1996)
  • Indiana Trace Metals Pilot Study (1997-1998)
  • Ohio Necessity of Clean Sampling in the Determination of Dissolved Metals Translators (1998-1999)
  • Fox River Remediation Studies, Deposit N and 71 (1998-1999)
  • Fox River Remediation Study, Deposits 56/57 (1999-2000)
  • Milwaukee Airport study (1996-2001)
  • Comparison of Metals Digestion Procedures in Wisconsin Waters (1998)


Selected Research Clients


  • Wisconsin Department of Natural Resources
  • Indiana Department of Environmental Management
  • Minnesota Pollution Control Agency
  • University of Minnesota
  • Metropolitan Pollution Control Commission-Minneapolis, MN
  • University of Wisconsin-Madison
    • Water Chemistry Program
    • Limnology Department
    • Department of Agronomy
    • Department of Geology
  • U.S. Geological Survey
  • Ohio EPA, Division of Surface Water