microESRThe World’s Smallest Electron Spin Resonance Spectrometer

microESRInnovation with Integrity

The world‘s smallest benchtop ESR spectrometer

Bruker’s Benchtop microESR includes our patented miniature electron spin resonance spectrometer operating at 9.7 GHz with a sweep range of over 500 Gauss and sub-micromolar sensitivity. Also included is a convenient ESR start-up kit with various basic tubes and accessories. The system is operated using an embedded Windows 7 PC. The spectrometer can be purchased with a variable temperature control option as well as a LN2 dewar. The microESR can also be operated in flow mode.

Electron spin resonance (ESR) is the only method to detect the concentration and composition of free radicals in a sample, and with the new microESR spectrometer from Bruker, adding ESR to your lab has never been easier.The microESR provides excellent performance in a compact design that is small enough to fit in a fume hood or anywhere else in your lab. Scientific research, education, and industry applications of ESR are supported by one comprehensive and easy-to-use software package.

PTIO-NO• Spin Adduct DMPO-OH• Spin Adduct50 μM aqueous TEMPOL in 1 mm capillary. Detection Limit: 0.1 uM in aqueous solution

Applications include, but are not limited to:

�� Measuring Reactive Oxygen and Nitrogen Species�� Spin Labeling�� Spin Trapping (BMPO, DMPO, PBN,TEMPOL, PTIO, etc)�� Crude Oil: Asphaltenes and Vanadium�� Kinetics�� Education�� DNP�� Dosimetry�� Monitor the Thermo-oxidative Breakdown of Lubricants�� Shelf Life of Food Products�� Soot and Carbon Black

Specifications

FREQUENCY 9.6 to 9.8 GHz

Resonator Cylindrical Dielectric

Sample Tube Diameter Up to 5.8 mm

Sweep Range Over 500 Gauss, centered at g=2

Supply Voltage 15 VDC (120/240 V Wall Adapter Included)

Data Interfaces Ethernet and USB

Screen 21 cm Touch Panel display with Windows 7 Embedded DVI/HDMI/VGA

Dimensions 30.5 x 30.5 x30.5 cm3

Mass 10 kg

Sample results:

Processing and Analysis Software

�� Runs on any Windows computer�� User friendly in-depth processing and ana-lysis of data�� Includes comprehensive user manuals for operation and data processing.�� Baseline correction�� Filtering�� Signal to Noise (signal amplitude/2*RMS noise)�� Automatic Concentration Determination- can use either peak to peak amplitude or doubleintegral values�� Automatic processing of kinetics data�� Automatic analysis of power array data�� Calculation of double integral values

Functions:

�� Automatic lock and tune �� Parameter arrays�� Versatile kinetics acquisition software�� Intuitive user interface for novice users�� Easy to learn and operate�� Interactive user interface for experienced users�� Straight forward to access, adjust and opti-mize test parameters�� Filtering�� Baseline Corrections

Display of processed kinetics data. Power array data of crude oil

microESR Education Package Bruker’s microESR is a great value for chemistry depart-ments as it is an ideal teaching tool for many areas of chemistry, and can be incorporated into a wide variety of labs including analytical, inorganic, organic, and instrumental as well as p-chem. The labs were desi-gned for undergraduate chemistry students and cover straight forward topics from free radicals in everyday life to far less intuitive topics like electron density, spin-spin exchange, forbidden transitions, and spin-orbit cou-pling. The microESR is also a research grade instrument, and can be used for both undergraduate and graduate research projects.

The Education Package comes with an Experiment Manual with seven experiments, an Instructor’s guide, and materials to get started.

Fiber-Optic Package A fiber optic cable can easily be installed in the microESR either in the factory, or out in the field if the fiber-optic package is purchased separately from the spectrometer.

External Reference Standard

Removable Cr(III) Oxide marker can be used.

Flow Kit:�� A kit to allow the microESR to be run in flow mode. �� Designed for aqueous or other polar solvents. �� To be run at ambient pressure.

Capillary Holder Kit:�� Convenient holder for capillaries�� 3mm OD�� 3mm tube guide included

The package contains the following:

�� microESR Spectrometer�� microESR Experiments Manual with Seven Labs�� microESR Instructor’s Guide�� Lab Accessory Kit�� microESR User’s Manual�� microESR Analysis and Processing Software with Manual

The package contains the following:

�� A fiber optic cable with SMA connectors on both ends�� A tube guide with an SMA fitting�� A nut to secure the tube guide

Instruction Manual NOTE: The light source is not included

Variable Temperature Control

ThermoCube Kit�� Regulates temperature between 5 and 65°C�� 20 2mm quartz ESR tubes (250 mm length)�� Adapter kit �� Instruction Manual

Liquid N2 finger devar (77K)�� For ESR experiments that require liquid nitrogen temperature�� The finger dewar accommodates a 1.7 mm microESR tube.

Fixtures

Tube Alignment Guides�� For 5 mm tubes (included with spectrometer)�� For 4 mm tubes�� For 3 mm tubes�� For 2 mm tubes

Blunt Loading Needles�� 12 gauge- Ideal for transferring viscous liquids, including crude oil, into ESR sample tubes�� 20 gauge- Fit into even 1 mm ID sampletubes. Perfect for loading non-capillary action narrow ESR tubes

Calibration Standards�� Calibration standard #1 plasticine (Mn(n) impurity)�� Calibration standard #2 Cr (III) oxide�� Calibration Standard #4- 50 μM TEMPONE in water

Consumables

ESR Tubes�� 1.7 mm capillary

- 100 mm length - 230 mm length�� 2 mm quartz capillaries, 100 mm�� 5 mm quartz sample tubes

- 100 mm length - 230 mm length�� 4 mm quartz sample tubes

- 100 mm length - 230 mm length�� Precision quartz tubes

- Thin-walled - Medium -walled - Thick-walled

Accessories and Special Packages

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