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<TABLE WIDTH=95% BORDER=0 CELLPADDING=0 CELLSPACING=0 BGCOLOR="#0000ff">
<COL WIDTH=256*>
<TR>
<TD WIDTH=100% HEIGHT=28 BGCOLOR="#0000ff">
<P ALIGN=RIGHT><FONT COLOR="#ffffff"><FONT FACE="Verdana"><B>ELECTROCONDUCTIVE
POLYMER MICROSENSOR ELECTRODES (EPMEs)</B></FONT></FONT></P>
</TD>
</TR>
</TABLE>
</DL>
<P STYLE="margin-left: 0.31in"><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt"><B>(Conductive
Polymer Sensors)</B></FONT></FONT></P>
<CENTER>
<TABLE WIDTH=94% BORDER=0 CELLPADDING=2 CELLSPACING=5>
<TR>
<TD WIDTH=234 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>EPME
DEVICES</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>Gold</B></FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>Platinum</B></FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#e9d2cb">
<P ALIGN=CENTER><FONT FACE="Verdana, Arial"><FONT SIZE=2><B>Sensory
Material</B></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Monolithic-Polyaniline</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Au-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Pt-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polyaniline</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Monolithic-Polypyrrole</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Au-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Pt-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polypyrrole</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Monolithic-Poly(3-hexylthiophene)</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Au-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-M-Pt-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>poly(3-hexylthiophene)</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Combined
Differential-Polyaniline</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Au-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Pt-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polyaniline</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Combined
Differential-Polypyrrole</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Au-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Pt-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polypyrrole</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Combined
Differential-Poly(3-hexylthiophene)</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Au-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-CD-Pt-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>poly(3-hexylthiophene)</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Fully
Differential-Polyaniline</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Au-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Pt-P-PAn</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polyaniline</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Fully
Differential-Polypyrrole</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Au-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Pt-P-PPy</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>Polypyrrole</B></I></FONT></FONT></P>
</TD>
</TR>
<TR>
<TD WIDTH=234 BGCOLOR="#cdd5e4">
<P><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><B>Fully
Differential-Poly(3-hexylthiophene)</B></FONT></FONT></P>
</TD>
<TD WIDTH=186 BGCOLOR="#dedba3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Au-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=129 BGCOLOR="#e3e3e3">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt">EPME
1050.5-FD-Pt-P-PTh</FONT></FONT></P>
</TD>
<TD WIDTH=146 BGCOLOR="#ece0d9">
<P ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=1 STYLE="font-size: 8pt"><I><B>poly(3-hexylthiophene)</B></I></FONT></FONT></P>
</TD>
</TR>
</TABLE>
</CENTER>
<CENTER>
<TABLE WIDTH=95% BORDER=0 CELLPADDING=2 CELLSPACING=2>
<TR>
<TD HEIGHT=22>
<P ALIGN=CENTER><A HREF="#introduction"><FONT SIZE=1 STYLE="font-size: 8pt">Introduction
and Background</FONT></A></P>
</TD>
<TD>
<P ALIGN=CENTER><A HREF="#applications"><FONT SIZE=1 STYLE="font-size: 8pt">Applications
of EPMEs</FONT></A></P>
</TD>
<TD>
<P ALIGN=CENTER><A HREF="#specifications"><FONT SIZE=1 STYLE="font-size: 8pt">Technical
Specifications</FONT></A></P>
</TD>
<TD>
<P ALIGN=CENTER><A HREF="#methods"><FONT SIZE=1 STYLE="font-size: 8pt">Methods</FONT></A></P>
</TD>
<TD>
<P ALIGN=CENTER><A HREF="#appnotes"><FONT SIZE=1 STYLE="font-size: 8pt">Application
Notes</FONT></A></P>
</TD>
<TD>
<P ALIGN=CENTER><A HREF="http://www.abtechsci.com/pricelist.html#epmes"><FONT SIZE=1 STYLE="font-size: 8pt">Price
List</FONT></A></P>
</TD>
</TR>
</TABLE>
</CENTER>
<HR>
<DL>
<DD>
<TABLE WIDTH=95% BORDER=0 CELLPADDING=5 CELLSPACING=0>
<COL WIDTH=256*>
<TR>
<TD WIDTH=100%>
<P><A NAME="introduction"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic1" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<B>Introduction and Background</B></P>
<UL>
<P STYLE="margin-bottom: 0in"></P>
<P STYLE="margin-bottom: 0in"><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>EPMEs comprise fully contiguous and specifically
adhered (via covalent bond formation) thin films of
electroconductive polymers fabricated on inert interdigitated
microsensor electrode array devices (IMEs). These EPME devices
serve as chemically sensitive solid-state transducers in various
chemical and biological sensors and as gas/vapor sensors.</FONT></FONT></P>
<P STYLE="margin-bottom: 0in"></P>
<P STYLE="margin-bottom: 0in"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>EPMEs are your direct means for the simultaneous
measurement of the electrical conductivity (conductimetric
sensor), electrode potential (potentiometric sensor), and
current (amperometric sensor) of thin, electroconductive polymer
films on </FONT><A HREF="imes.html"><FONT SIZE=1 STYLE="font-size: 8pt">IME
devices</FONT></A><FONT SIZE=1 STYLE="font-size: 8pt">. With the
associated Electroconductive Polymer Sensor Interrogation System
(EPSIS 240II CS), you are provided with the computerized sensor
interrogation and data acquisition hardware for the simultaneous
study of the electrochemical and electrical characteristics of
the electroactive polymer films - electroconductive polymer
sensor technology.</FONT></P>
<P STYLE="margin-bottom: 0in"></P>
<P STYLE="margin-bottom: 0in"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B><FONT FACE="Verdana">Microfabricated from magnetron
sputter-deposited gold or e-gun vapor-deposited platinum, these
devices are supplied with three possible proprietary
formulations of electroconductive polymers - polyaniline,
polypyrole and poly(3-hexylthiophene).</FONT></FONT></P>
<P STYLE="margin-bottom: 0in"><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Only
10 mincron line and space dimensions are available for the EPME
devices. However, our three device configurations are available;
Monolith (M), Combined Differential (CD), and Full Differential
(FD). The EPME is supplied in the form of a fully packaged (P)
electrode with leadwires attached and the device encapsulated
using a chemically resistant epoxy resin to seal the bonding
pads into a delrin electrode body.</FONT></FONT></P>
<P STYLE="margin-bottom: 0in"></P>
<P STYLE="margin-bottom: 0in"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>EPME transducers possessing surface-available
carboxylic acid (-COOH), primary amine (-NH2), primary alcohol
(-OH), or free sulfhydryl (thiol) (-SH) groups for the specific
attachment and immobilization of biologically active
polypeptides, enzymes, antibodies, enzyme-linked antibodies, DNA
fragments, as well as inorganic and other indicator molecules
may also be obtained under our </FONT><A HREF="babs.html"><FONT SIZE=1 STYLE="font-size: 8pt">Bioanalytical
Biosensors</FONT></A><FONT SIZE=1 STYLE="font-size: 8pt">
product line or under joint product development contract. </FONT>
</P>
</UL>
<P STYLE="margin-bottom: 0in"><BR>
</P>
<P><A HREF="#top"><FONT SIZE=1>Back to Top</FONT></A></P>
<HR>
<H3><A NAME="applications"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic2" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<FONT SIZE=2><FONT FACE="Verdana">Applications of EPMEs</FONT></FONT></H3>
<P><A HREF="news.html"><FONT SIZE=1 STYLE="font-size: 8pt">Applications
of EPMEs</FONT></A><FONT SIZE=1 STYLE="font-size: 8pt"> in
research and product development include:</FONT></P>
<UL>
<P STYLE="margin-bottom: 0in"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT>In chemical and biosensor research and development:</B>
The high sensitivity of these organic, polymeric, semiconducting
films to changes in redox state, along with the solid state
construction and small device size, make these devices ideally
suited for research and development of chemical and biosensor
applications.<BR></FONT><BR>
</P>
<P STYLE="margin-bottom: 0in"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT>In volatile organic compound (VOC) sensor research and
development:</B> The ability of these polymer films to
reversibly absorb and desorp organic vapors from within their
microstructure with simultaneous change in electrical
conductivity makes these sensors well suited for the development
of VOC probes.<BR></FONT><BR>
</P>
<P><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT>As chemoresistive sensor elements in multi-element arays:</B>
Several differently responding, but singularly non-specific,
sensor elements may be assembled into multi-element arrays for
the recognition and monitoring of analytes of interest.</FONT></P>
</UL>
<P><A HREF="#top"><FONT SIZE=1>Back to Top</FONT></A></P>
<HR>
<H3><A NAME="specifications"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic3" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<FONT SIZE=2><FONT FACE="Verdana">Technical Specifications</FONT></FONT></H3>
<P><B><FONT COLOR="#00af00">Ø </FONT><FONT SIZE=1 STYLE="font-size: 8pt">Chip
Substrate: Schott D263 Borosilicate Glass</FONT></B></P>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Dielectric
Constant, Epsilon(r) at 1 MHz = 6.7</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Dielectric
Loss Angle, tan delta, at 1 MHz = 61 x 10<SUP>-4</SUP></FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Electrical
Resistivity (50 Hz) (250 C) = 1.6 x 108 ohm cm</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Coefficient
of Linear Thermal Expansion, * 20-300 = 7.2 x 10<SUP>-6</SUP> K<SUP>-1</SUP></FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Refractive
Index at 20 C, ne ( Lambda = 546.1 nm) = 1.5249</FONT></FONT></BLOCKQUOTE>
<P><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT>Metallization: 100 Å Ti / 1000 Å Au or P</B>t</FONT></P>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Digit
length, d, (microns) = 4,985</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">No.
of digit pairs per sensor, N = 50</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Digit
Width, a, (microns) = 10</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Interdigit
Space, a, (microns) = 10</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Spatial
Periodicity, lambda, (microns) = 40</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Zaretsky
Meander Length, M, (cm) = 24.93 cm</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Center
Line or Serpentine Length (cm) = 49.55 cm</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Cell
Constant (cm<SUP>-1</SUP>) = 0.040 cm<SUP>-1</SUP></FONT></FONT></BLOCKQUOTE>
<P><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT>IME Chip Dimensions <I>(l x w x t</I>) for the Un-packaged
Die (EPME devices are available in FD design only)</B></FONT></P>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Full
Differential, FD = 1.75 x 1.00 x 0.05 cm</FONT></FONT></BLOCKQUOTE>
<P><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT>Packaging (all EPME devices are fully packaged)</B></FONT></P>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Electrode
Body: Delrin</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Encapsulant:
Epoxy header.</FONT></FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Leadwires:
28 AWG stranded copper, shielded, and PVC jacketed.</FONT></FONT></BLOCKQUOTE>
<P><A HREF="#top"><FONT SIZE=1>Back to Top</FONT></A></P>
<HR>
<H3><A NAME="methods"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic4" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<FONT SIZE=2><FONT FACE="Verdana">Methods</FONT></FONT></H3>
<P><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">Chemoresistance
responses of EPME devices may be obtained form a wide assortment
of interogation hardware. These fall into three categories.</FONT></FONT></P>
<UL>
<P STYLE="margin-bottom: 0in"><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>Dedicated Electroconductive Polymer Sensor
Interrogation System (EPSIS).<BR></FONT></FONT><BR>
</P>
<P STYLE="margin-bottom: 0in"><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>DC Resistance Measurements performed with:<BR>Simple
multimeters set to resistance mode with operator recording of
displayed data.<BR>Sophisticated multimeters with data logging
capability or computer interfaced (commonly RS232, IEEE488, or
USB).<BR>Electrometers with a computer interface (commonly
RS232, IEEE488, or USB).<BR></FONT></FONT><BR>
</P>
<P><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>Complex Impedance response performed with:<BR>Combined
Function Generator and Lock-in Amplifier.<BR>Transfer Function
Analyzers.<BR>AC-Impedance Analyzers. </FONT>
</P>
</UL>
<P><A HREF="#top"><FONT SIZE=1>Back to Top</FONT></A></P>
<HR>
<H3><A NAME="appnotes"></A><IMG SRC="gifs/tbullet.gif" NAME="Graphic5" ALIGN=BOTTOM WIDTH=12 HEIGHT=12 BORDER=0>
<FONT SIZE=2><FONT FACE="Verdana">Application Notes</FONT></FONT></H3>
<P><FONT FACE="Verdana"><FONT SIZE=1 STYLE="font-size: 8pt">For
further information, request Application Notes:</FONT></FONT></P>
<BLOCKQUOTE><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>IME1 - Interdigitated Microsensor Electrodes:
Applications and References.</FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>IME2 - Conductimetric Urea Biosensor Formed From
Interdigitated Microsensor Electrodes</FONT></BLOCKQUOTE>
<BLOCKQUOTE><FONT SIZE=1 STYLE="font-size: 8pt"><B><FONT COLOR="#00af00">Ø
</FONT></B>IME3 - Cleaning Procedures</FONT></BLOCKQUOTE>
<P><FONT SIZE=1 STYLE="font-size: 8pt">Electroconductive Polymer
Microsensor Electrode (EPME<SUP>TM</SUP>) is the trade name for a
family of non-specific sensor devices developed by ABTECH.</FONT></P>
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<P ALIGN=CENTER><FONT SIZE=1><FONT FACE="Verdana, Arial"><B>Contact:
Ann M. Wilson, </B>Manager, <BR>Applications Development ABTECH
Scientific, Inc.<BR>800 East Leigh Street, Suite G24, Richmond,
Virginia 23219<BR>Telephone Number: +1-804-783-7829 Fax Number:
+1-804-783-7830<BR>e-mail: <A HREF="mailto:[email protected]">[email protected]</A></FONT></FONT></P>
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