Skip to Content

Other Analytical Instruments

Contact: James Windak, Manager, 734-647-2847

3411 Chemistry 
930 N. University Ave.
Ann Arbor, MI 48103

Fees/Recharge Rates

  UM Users External Users  
Instrumentation $14.00 $98.00 per hour
Consultation $65.00 $195.00 per hour

Updated 8/5/2016

Analytical Instruments

Electron Spin Resonance Spectrometer

Our Bruker EMX electron spin resonance spectrometer is equipped with dual microwave bridges, and can acquire spectra in both the X-band and Q-band ranges. We have two resonator cavities available for X-band range: a Bruker 4102-ST general purpose cavity (rectangular TE102), and a Bruker 4103-TM cavity (cylindrical TM110). The 4103-TM is useful for flat cell work.

The Varian liquid nitrogen cryostat can cool samples down to approximately –160 C. 

The Oxford liquid helium cryostat can cool samples down to as low as 4 Kelvin.

To use the EMX,  contact Jim Windak to arrange for a one-hour training class. Print and read the EMX User's Booklet prior to the training class.

You will need to provide a valid shortcode account number for billing your access time on the instrument. Please see billing rates above.

Since the instrument is frequently used, it is best to e-mail Jim Windak to schedule a day and time to do your experiments, and to request the hardware setup that you need.

The Bruker EMX is located in room 4709 Chemistry.

Reserve a time on this machine using Google Sites.

The Varian liquid nitrogen cryostat can cool samples down to approximately –160 C.

The Varian liquid nitrogen cryostat can cool samples down to approximately –160 C.

FT-IR Spectrometer

Two Perkin-Elmer FT-IRs are available for student use. The “Spectrum BX” is a bench-top FT-IR capable of routine mid-IR work (4000 cm-1 to 400 cm-1). The “Spectrum GX” is the larger system with more capabilities. The Spectrum GX can do routine mid-IR work, but is also capable of collecting spectra in the near-IR region (12000 cm-1 to 1800 cm-1). To do near-IR work, the beamsplitter must be changed from KBr to CaF2, and the detector must be changed from the standard room temperature DTGS detector to the liquid nitrogen cooled InSB detector.

The Spectrum GX also has a microscope accessory, with a liquid nitrogen cooled MCT-B detector that covers the range from 4000 cm-1 to 700 cm-1. The microscope accessory can be used in either transmittance or reflectance mode. It can analyze sample regions as small as a few microns square. The position of the microscope’s X-Y stage can be controlled via the data system. The data system can be set up to automatically map the entire surface of a sample.

IR Accessories:

An ATR accessory (Attenuated Total Reflectance) fits into either the Spectrum BX or the Spectrum GX. It has a ZnSe ATR crystal for solid samples and one for liquid samples. ATR is most useful for sampling the surface of smooth materials that are either too thick or too opaque for transmission IR. Course or abrasive solid samples cannot be done by ATR because they can scratch the ZnSe crystal. The liquid ATR crystal is most useful for analyzing substances in aqueous solution. The massive –OH water band gets attenuated by ATR; sample bands at longer wavelengths become enhanced.

We also have a diffuse reflectance accessory for the Spectrum GX. Diffuse reflectance is useful for powdered materials. The powdered materials should be diluted with KBr prior to running by diffuse reflectance.

Using the FT-IR Equipment

To use the FT-IRs, contact Jim Windak to schedule a short training class.

The Spectrum BX IR User's Booklet should be printed out and read prior to the training session for the Spectrum BX.

The IR Microscope User's Booklet should be printed out and read prior to the training session for the Spectrum GX microscope.

You must provide a valid shortcode account number for billing your access time on these instruments. Please see billing rates above.

The Spectrum BX and the Spectrum GX are located in room 3411 Chemistry.

Reserve a time on Spectrum GX FT-IR using Google Sites.

Fluorimeter

The Fluoromax-2 fluorimeter is a sensitive instrument that can detect very low levels of fluorescence in samples. It has a xenon arc lamp and two monochrometers, one to select excitation wavelengths, and one to select emission wavelengths. It can perform emission scans, excitation scans, or do time-based monitoring. The wavelength region covered is 200 nm to 950 nm.

We have a temperature-controlled sample holder that accepts standard 10 mm rectangular cuvettes. The temperature of the sample can be controlled from 8 C to 80 C via a Neslab water bath.

We also have a solid sample holder, which is useful for films. Its angle can be adjusted to obtain the best results.

We also have an auto-polarizer accessory. This accessory can rotate the position of the excitation and emission polarizers via stepper motors under data system control. This accessory enables one to do automatic anisotropy measurements on solutions.

Persons needing to use the fluorimeter should contact Jim Windak to schedule a brief 15 minute training session. The Fluorimeter User’s Booklet should be printed out and read prior to the training class.

You must provide a valid shortcode account number for billing your access time on the instrument. Please see billing rates above.

The Fluoromax-2 fluorimeter is located in room 4709 Chemistry.

Reserve a time on this machine using Google Sites.

Perkin-Elmer TGA-7 Thermogravimetric Analyzer

The Perkin-Elmer TGA-7 thermogravimetric analyzer measures the weight loss of samples upon heating. The samples can be heated in a nitrogen or an air atmosphere, the gas being selectable via data system control. The furnace can heat samples from room temperature to 900 C. The balance is sensitive to 0.1 microgram. The TGA is temperature calibrated using the Curie points of alumel, nickel and iron. From the graph of % Weight versus Temperature, one can calculate Onset temperatures, and also delta-Y steps. The instrument uses Perkin-Elmer’s Pyris software for data acquisition and processing.

Persons needing to use the TGA should contact Jim Windak to schedule a training session.

The TGA-DSC User's Booklet should be printed out and read prior to the training session.

You will need to provide a valid shortcode account number for billing your access time on the instrument. Please see billing rates above.

The Perkin-Elmer TGA is located in room 2069 Chemistry.

Reserve a time on this machine using Google Sites.

Perkin-Elmer DSC-7 Differential Scanning Calorimeter

The Perkin-Elmer DSC-7 differential scanning calorimeter is used to accurately measure melting points, glass transitions, and heats of fusion. Typical temperature range is from 10 C to 400 C. The temperature scale is calibrated using a two-point calibration, measuring the onset temperatures of indium and zinc standards. The enthalpy scale is calibrated using the observed delta-H from an accurately known amount of indium.

Samples are encapsulated in disposable aluminum pans, typically using 3 – 10 milligrams of sample. There are two styles of pan available, one used for solids, and a hermetically sealed version for liquids. Great care must be taken not to overheat samples in the DSC so that they will not leak out of or burst the sample pans. Material that leaks out into the DSC can cause permanent damage to the DSC’s furnace, particularly if there are metals present in the sample that could alloy with the platinum furnace holders. There is a sample side and a reference side to the furnace. A blank pan is usually inserted into the reference side.

Data acquisition and processing is done with Perkin-Elmer’s Pyris software. From graphs of heat flow versus temperature, one can calculate onset temperatures, peak areas, enthalpies, and glass transitions.

Persons needing to use the DSC should contact Jim Windak for training.

The TGA-DSC User's Booklet should be printed out and read prior to the training session.

You will need to provide a valid shortcode account number for billing your access time on the instrument. Please see billing rates above.

The Perkin-Elmer DSC-7 is located in room 2069 Chemistry.

Reserve a time on this machine using Google Sites.

Shimadzu UV-1601 UV-VIS Spectrometer

The Shimadzu UV-1601 UV-VIS spectrometer is used for transmission spectroscopy in the range from 190 nm to 1100 nm. There are two lamps used: a tungsten lamp that covers the region from 350 nm to 1100 nm, and a deuterium lamp that covers the region from 190 nm to 350 nm. The instrument can be used in a scanning spectrum mode, a kinetics mode, and a quantitative analysis mode. Data acquisition and processing is controlled through the Shimadzu UV-Probe software.

A Peltier temperature controller is available to heat or cool sample and reference cells while acquiring spectra.This accessory has a temperature range of 7 C to 60 C

Persons needing to use the UV-VIS should contact Jim Windak for training.

The Shimadzu UV-VIS User's Booklet should be printed out and read prior to the training class.

You will need to provide a valid shortcode account number for billing your access time on the instrument. Please see billing rates above.

The Shimadzu UV-VIS spectrometer is located in room 3411 Chemistry.

Reserve a time on this machine using Google Sites.

Shimadzu GPC System

Our Shimadzu GPC has 3 columns in series, which cover a molecular weight range from 1,000,000 to 92.

The system consists of an autosampler, a heated column compartment, a refractive index detector, and a diode array UV-VIS detector.

We use the solvent THF in our system.  Your sample must be soluble in THF in order to analyze it on this system.

Persons wishing to use the GPC should contact Jim Windak to schedule a training session. You will need to provide a shortcode account number for billing your access time on the instrument. Please see fees/recharge rates above.

The Shimadzu GPC User's Booklet should be printed out and read prior to the training session.  It contains basic information about using the GPC and the Shimadzu software.

The Shimadzu GPC is located in room 2069 Chemistry.

Reserve a time on this machine using Google Sites.

ICP-OES Analysis Inductively Coupled Plasma - Optical Emission Spectroscopy

The Perkin-Elmer Optima 2000 DV with Winlab software can analyze aqueous solutions for metals with either a Radial or an Axial plasma configuration. In Axial mode, you can generally achieve a 5-10 ppb detection limit, depending upon the element.

ICP-OES user's booklet

What Types of Samples Can Be Analyzed?

You can analyze any solids, liquids, or oils that are capable of being fully digested by concentrated acids. Concentrated acids commonly used to digest the samples are nitric acid, hydrochloric acid, and sulfuric acid.

Training: To use the ICP, contact Jim Windak, jwindak@umich.edu.

Reserve a time on this machine using Google Sites. 

Waters Investigator SFC system

The Waters Investigator SFC system is a supercritical fluid chromatography system.  There are eight chiral columns installed in the column oven, which can be quickly cycled through to choose the best column for challenging separations.  There is also a prep column available for use with a fraction collector.

For instrument training, please contact Jim Windak, jwindak@umich.edu

Please print and read the SFC User’s Booklet prior to the training session.

You will need to provide a valid shortcode account number for billing your access time on the instrument. Please see billing rates above. 

The SFC system is located in 3411 Chemistry.
Reserve time on this machine using Google Sites.    

Waters SFC