North Central College
Science Facilities and Equipment
Kroehler Science Center

Kroehler Science Center

     The 27,000-sq. ft Kroehler Science Center houses the departments of Biology, Chemistry and Physics and the Biochemistry program. There are ten teaching laboratories equipped for cellular/molecular biology, botany/ecology, physiology, zoology/development, inorganic chemistry, organic chemistry, analytical chemistry, biochemistry, classical physics and modern physics. Core facilities include: instrument rooms, media preparation room, darkroom, biology lab preparation room, animal care rooms, and organic and inorganic chemical stockrooms. Science faculty offices and research laboratories are located here, as well as five classrooms, a computer lab and a conference room.


Major Instruments

  • Bruker 300 MHz FT-NMR spectrometer
  • Agilent diode-array UV/VIS spectrophotometer
  • Perkin-Elmer FT-infrared spectrometer (FT-IR)
  • Perkin-Elmer Lambda 35 UV/Visible spectrophotometer
  • Perkin-Elmer LS 55 fluorescence spectrometer
  • Peltier temperature controllers
  • HP gas chromatograph-mass spectrometer (GC-MS)
  • Varian atomic absorption spectrometer (AA)
  • Dionex capillary electrophoresis (CE) system
  • Perkin-Elmer inductively coupled plasma (ICP) spectrometer
  • Gow-Mac gas chromatograph (GC)
  • Perkin-Elmer Series 200 HPLC
  • PhastSystem automated electrophoresis system
  • Scintillation counter
Gel Electrophoresis

Molecular Biology Equipment

  • Bio-Rad gradient thermal cycler for PCR
  • MJR thermal cycler
  • Kodak GL100 photodocumentation/analysis system
  • Bio-Rad microplate spectrophotometer
  • 2 Perkin-Elmer thermal cyclers
  • Hoeffer DNA electrophoresis equipment
  • Bio-Rad protein electrophoresis equipment
  • Sorvall benchtop high-speed centrifuge
  • Immunoblotting apparatus
  • Dot/slot blot apparatus
  • 2 Eppendorf refrigerated microcentrifuges
  • 4 Eppendorf microcentrifuges
  • Bio-Rad electroporator
  • Bio-Rad gel dryer
  • Micropipettors, multichannel and repeating pipettors

Ecology and Field Biology

  • Li-Cor LI-6400XT Portable Photosynthesis System
  • Hansatech Chlorophyll Content Meter
  • GPS systems
  • Backpacking and camping gear for 18 people
  • Heated/refrigerated growth chambers with lighting
  • Temperature-controlled marine aquarium
  • Freshwater aquaria and terraria
  • Digital cameras
  • Water sampling and testing equipment
  • Plant growth facilities
Organic Chemistry

Chemistry and Physics

  • Ortec Nuclear Spectroscopy equipment
  • Teach-Spin Pulsed/CW NMR spectrometer
  • LabVIEW data acquisition software and hardware
  • Stanford Research Systems pulsed nitrogen laser
  • Centrivap concentrator & Buchi rotary evaporators
  • Plas-Labs and Uni-lab glove boxes
  • Parr solution and oxygen-bomb calorimeters
  • Laser Science pulsed nitrogen laser & dye module
  • McPherson monochromators
  • AD Instruments data acquisition system
  • Parr hydrogenator
  • eDAQ electroanalytical voltammetry system
  • Jasco digital polarimeter
  • Tel-Atomic x-ray spectrometer
  • Shimadzu UV/VIS spectrophotometers
  • Spectrophotometer temperature controllers
  • Digital oscilloscopes
  • Milli-Q water system
  • TeachSpin Lock-In Amplifier
  • TeachSpin Diode Laser Spectroscopy equipment
  • Analytical balances, chemical hoods and Drying ovens


  • 24 Leica CME microscopes
  • 18 Leica DME microscopes with phase contrast
  • Zeiss microscope with micromanipulator
  • Leica microscope with DIC optics
  • Phase-contrast microscope with CCD camera
  • Leica dissecting microscope with photomicography
  • 12 Leica dissecting microscopes
  • Digital camera for photomicrographs
  • Computer interfaces for image capture
  • Image analysis software
  • Fluorescence objective for fluorescent microscopy
  • 2 Microtomes and associated equipment
  • 24 dissecting microscopes
  • 60 additional student microscopes

Biology and Biochemistry Equipment

  • 8 Bio-Rad UV/VIS spectrophotometers
  • Ultrasonic cell disruptor
  • Physiograph with computer interface
  • Visible-light spectrophotometers
  • 2 Ultra-low temperature freezers
  • LabLine large refrigerated platform incubator shaker
  • CO2 incubator
  • Autoclave
  • Biological safety cabinet
  • Touch-plate bunsen burners
  • Incubators, shakers and growth chambers
Computer lab

Computer Equipment

  • 12 PC computers in general-use computer lab
  • Scanner
  • Two laser printers and color laser printer
  • Ten PC workstations in physics lab
  • 14-CPU Linux parallel processor
  • Dedicated computers for video microscopy
  • HyperChem, PC-Spartan Pro, Gaussian 98, MathCad
  • ChemDraw, Chem3D, Chem Windows
  • Classroom computer projection equipment