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<P ALIGN=RIGHT><A NAME="top"></A><B><FONT COLOR="#ffffff" FACE="Verdana">MINIATURE
ELECTRODES AND SENSORS</FONT></B></TD>
</TR>
</TABLE><TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" WIDTH="90%"
HEIGHT="1">
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<TD>
<P><CENTER><A HREF="picts/agcl_refl.JPG"><INPUT SRC="picts/agcl_refs.jpg"
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<P><CENTER><B><FONT FACE="Verdana">Miniature Reference Electrode:
RE 803-X</FONT></B></CENTER></P>
<P><CENTER><A HREF="#desre803"><B><FONT SIZE="-1" FACE="Verdana">Design</FONT></B></A><B><FONT
SIZE="-1" FACE="Verdana"> and <A HREF="#specre803">Specifications</A></FONT></B></CENTER></TD>
<TD>
<P><CENTER><A HREF="picts/cpel.JPG"><IMG SRC="picts/cpes.JPG"
WIDTH="68" HEIGHT="130" X-SAS-UseImageWidth BORDER="0" ALIGN="BOTTOM"
NATURALSIZEFLAG="0"></A></CENTER></P>
<P><CENTER><B><FONT FACE="Verdana">Miniature Combination pH Electrode:
CPE 905-X<BR>
</FONT><FONT SIZE="-1" FACE="Verdana"><A HREF="#descpe905">Design</A>
and <A HREF="#speccpe905">Specifications</A></FONT></B></CENTER></TD>
<TD>
<P><CENTER> </CENTER></P>
<P><CENTER> </CENTER></P>
<P><CENTER> </CENTER></P>
<P><CENTER><B><FONT FACE="Verdana">Miniature Oxygan Sensor: OS
418</FONT></B></CENTER></P>
<P><CENTER><A HREF="#desos418"><B><FONT SIZE="-1" FACE="Verdana">Design</FONT></B></A><B><FONT
SIZE="-1" FACE="Verdana"> and <A HREF="#specos418">Specifications</A></FONT></B></CENTER></TD>
</TR>
</TABLE></CENTER></P>
<H3><CENTER><TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0"
WIDTH="90%" HEIGHT="5">
<TR>
<TD WIDTH="264">
<P><CENTER><FONT SIZE="-1" FACE="Verdana"><A HREF="#introduction">Introduction
and Background</A></FONT></CENTER></TD>
<TD WIDTH="227">
<P><CENTER><FONT SIZE="-1" FACE="Verdana"><A HREF="#prices">Mini
Electrode Prices</A></FONT></CENTER></TD>
<TD WIDTH="198">
<P><CENTER><FONT SIZE="-1" FACE="Verdana"><A HREF="pricelist.html">Price
List</A></FONT></CENTER></TD>
</TR>
</TABLE></CENTER></H3>
<H3><CENTER><HR><IMG SRC="gifs/tbullet.gif" WIDTH="12" HEIGHT="12"
X-SAS-UseImageWidth X-SAS-UseImageHeight ALIGN="BOTTOM" NATURALSIZEFLAG="0"><A
NAME="introduction"></A><FONT FACE="Verdana">Introduction and
Background</FONT></CENTER></H3>
<UL>
<LI><FONT SIZE="-1" FACE="Verdana">ABTECH has developed a series
of miniature electrodes that are well suited for electroanalytical
work on extremely small volumes and in highly confined spaces.
The miniature silver / silver chloride (Ag/AgCl, 3M Cl-) reference
electrode, the miniture combination pH electrode, and the minature
oxygen sensor are particular examples that work well with our
Microfabricated Interdigitated Microsensor Electrodes (IMEs)
in microanalyutical electrochemistry, with our Electroactive
Polymer Microsensor Electrodes (EPMES) in chemical and biological
sensor development, and with our Bioanalytical Biosensors in
the performance of various bioassays.</FONT>
</UL>
<P><CENTER><A HREF="#top"><FONT SIZE="-1" FACE="Verdana">Back
to Index</FONT></A></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="desre803"></A><FONT
SIZE="+0" FACE="Verdana">Design of the RE 803 Miniature Ag*/AgCl,
3M Cl- Reference Electrode</FONT></CENTER></H3>
<UL>
<LI><FONT SIZE="-1" FACE="Verdana">The RE 803 is fabricated from
chloridized, high-purity silver wire immersed in a contacting
solution of 3M potassium chloride that is saturated with silver
chloride. The electrode is a compact 6 cm long with a narrow
2.5 mm O.D. glass barrel. Two glass barrels are provided. The
first has an extremely fine 1.0 mm O.D. glass fiber tip, allows
a very slow 1.7 uL/day flow, and is well suited for use in organic
solutions. The second barrel has a fine 2.0 mm O.D. fritted ceramic
tip, allows only a 5 uL/day flow, and is better suited for use
in aqueous solutions. Each electrode barrel has a 100 uL electrolyte
capacity. Electrodes are outfitted with U.S. Standard pin-type
connectors and each is supplied with 25 mL of replacement filling
solution, a filling capillary, and an instruction sheet.</FONT>
</UL>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"> <A HREF="#top">Back
to Index</A></FONT></CENTER></P>
<H3><CENTER><HR><FONT SIZE="+0" FACE="Verdana"><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="specre803"></A><FONT
SIZE="+0" FACE="Verdana">Technical Specifications for the RE
803 Miniature Reference Electrode</FONT></CENTER></H3>
<H3><CENTER><TABLE BORDER="0" CELLPADDING="1" WIDTH="90%" CELLSPACING="2">
<TR>
<TD>
<P><B><FONT SIZE="-1" FACE="Verdana">General Sensor Specifications:</FONT></B></P>
<P ALIGN=RIGHT><FONT SIZE="-1" FACE="Verdana">Electrode Body:<BR>
Total Length:<BR>
Barrel Length:<BR>
Lead Length:<BR>
Electrode Barrel O.D.:<BR>
Electrode Tip O.D.:<BR>
Immersion Depth:<BR>
Response Time:<BR>
Temperature Range:<BR>
Reference Junction:</FONT></TD>
<TD>
<P> </P>
<P><FONT SIZE="-1" FACE="Verdana">Black Delrin<BR>
9.5 cm<BR>
6.5 cm<BR>
1 m<BR>
2.5 mm<BR>
1.0 mm<BR>
Surface Contact<BR>
5 sec<BR>
-4*C - 75*C<BR>
Fiber and/or Frit</FONT></TD>
</TR>
</TABLE></CENTER></H3>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"> <A HREF="#top">Back
to Index</A></FONT></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="descpe905"></A><FONT
SIZE="+0" FACE="Verdana">Design of the CPE 905 Combination pH
Electrode</FONT></CENTER></H3>
<UL>
<LI><B><FONT SIZE="-1" FACE="Verdana">Design: </FONT></B><FONT
SIZE="-1" FACE="Verdana">The Model CPE 905 is a miniature combination
pH electrode with internal Ag*/AgCl, 3M Cl- reference element
and a miniature glass sensing bulb membrane.<BR>
</FONT>
<LI><B><FONT SIZE="-1" FACE="Verdana">Sensor Design:</FONT></B><FONT
SIZE="-1" FACE="Verdana"> The CPE 905 is fabricated from a miniaturized
pH sensitive glass bulb which is internally junctioned with a
chloridized, high-purity silver wire immersed in a contacting
solution of 3M potassium chloride that is saturated with silver
chloride. The electrode is a compact 6 cm long with a narrow
2.5 mm O.D. glass barrel and 1.2 mm O.D. pH sensitive tip. Each
CPE 905 has a 100 uL reference solution capacity and a very slow
5 ul/day flow rate. Electrodes are outfitted with BNC connectors
that fit most pH Meters and each is supplied with 25 mL replacement
reference filling solution, a filling capillary, and an instruction
sheet.</FONT>
</UL>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"> <A HREF="#top">Back
to Index</A></FONT></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="speccpe905"></A><FONT
SIZE="+0" FACE="Verdana">Technical Specifications for the CPE
905 Combination pH Electrode</FONT></CENTER></H3>
<H3><CENTER><TABLE BORDER="0" CELLPADDING="1" WIDTH="90%" CELLSPACING="2">
<TR>
<TD>
<UL>
<P><B><FONT SIZE="-1" FACE="Verdana">General Sensor Specifications:</FONT></B>
<P ALIGN=RIGHT><FONT SIZE="-1" FACE="Verdana">Electrode Body:<BR>
Total Length:<BR>
Barrel Length<BR>
Lead Length:<BR>
Electrode Body O.D.:<BR>
Electrode Tip O.D.:<BR>
Immersion Depth<BR>
Response Time<BR>
Temperature Range:<BR>
pH Range:<BR>
</FONT>
</UL>
</TD>
<TD>
<P> </P>
<P><FONT SIZE="-1" FACE="Verdana">Black Delrin<BR>
9.5 cm<BR>
6.5 cm<BR>
1 m<BR>
2.5 mm<BR>
1.2 mm<BR>
2.0 mm<BR>
10 sec<BR>
-4*C - 75*C<BR>
0 - 1 4 +/- 0.1 pH units</FONT></TD>
</TR>
</TABLE></CENTER></H3>
<P><CENTER> <FONT SIZE="-1" FACE="Verdana"><A HREF="#top">Back
to Index</A></FONT></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="desos418"></A><FONT
SIZE="+0" FACE="Verdana">Design and Principle of the OS 418 Miniature
Oxygen Sensor</FONT></CENTER></H3>
<UL>
<LI><FONT SIZE="-1" FACE="Verdana">The OS 418 oxygen sensor is
a miniature, Clark-type amperometric sensor suited to measuring
static as well as dynamically changing oxygen tensions (levels)
in aqueous and physiologic fluids.<BR>
</FONT>
<LI><B><FONT SIZE="-1" FACE="Verdana">Design: </FONT></B><FONT
SIZE="-1" FACE="Verdana">The sensor consists of a pair of miniaturized
electrodes immersed in a single drop of KCl electrolyte and separated
from the test environment by a replaceable oxygen permeable membrane.
An outer Ag°/AgCl anode surrounds an internal platinized
platinum cathode. The 0.13 mm (0.005") diameter high purity
platinum wire cathode is fused into a glass sheathing that fills
the lumen of the outer silver body. The oxygen permeable membrane
is placed over the tip of the electrode assembly and secured
with an O-ring. With the membrane and O-ring in place, the sensor
diameter is 4.5 mm (0.177"). The sensor is then housed in
an black delrin body that exposes only the membrane covered tip
of the sensor to the test solution.<BR>
</FONT>
<LI><B><FONT SIZE="-1" FACE="Verdana">Principle of Operation:
</FONT></B><FONT SIZE="-1" FACE="Verdana">A constant -0.7 V bias
voltage is applied (using your own potentiostat, the OSI-1, or
OSI-2 Instrument) between both the silver and platinum electrodes.
This produces a current directly related to the oxygen electrolytically
discharged at the cathode. The steady state discharge rate is
dependent upon diffusion of oxygen across the membrane and is
thus indirectly proportional to the extra-membrane concentration
of dissolved oxygen.</FONT>
</UL>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"> <A HREF="#top">Back
to Index</A></FONT></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="specos418"></A><FONT
SIZE="+0" FACE="Verdana">Technical Specifications for the OS
418 Miniature Oxygen Sensor</FONT></CENTER></H3>
<H3><CENTER><TABLE BORDER="0" CELLPADDING="1" WIDTH="90%" CELLSPACING="2">
<TR>
<TD>
<P><B><FONT SIZE="-1" FACE="Verdana">General Sensor Specifications:</FONT></B></P>
<P ALIGN=RIGHT><FONT SIZE="-1" FACE="Verdana">Sensor Length:<BR>
Sensor Housing Length<BR>
Sensor Diameter<BR>
Sensor Housing Diameter<BR>
</FONT></P>
<P ALIGN=RIGHT><FONT SIZE="-1" FACE="Verdana">Connector:<BR>
Sensitivity:<BR>
Time Constant/Response Rate (0 - 63%):<BR>
Bias Voltage:<BR>
Current Response for ambient pO<SUB>2</SUB>:<BR>
Thermal Drift:<BR>
</FONT></P>
<P ALIGN=RIGHT><B><FONT SIZE="-1" FACE="Verdana">The OS 418 packages
comprises:<BR>
<BR>
<BR>
<BR>
<BR>
</FONT></B></TD>
<TD>
<P> </P>
<P><FONT SIZE="-1" FACE="Verdana">4.182 cm<BR>
2.5 cm<BR>
0.318 cm<BR>
0.787 cm<BR>
</FONT></P>
<P><FONT SIZE="-1" FACE="Verdana">Fiber and/or Frit Modified
Amphenol Sub-Minax P/N 27.9<BR>
0 - 150 mm Hg<BR>
4 sec.<BR>
-0.7 V<BR>
18 nA<BR>
4 %/°C<BR>
</FONT></P>
<P><FONT SIZE="-1" FACE="Verdana">1 Oxygen Sensor<BR>
5 O-rings<BR>
1 Sheet of 25 um (0.001") Polyethylene Diffusion Membrane<BR>
1 Membrane Installation Tool (white)<BR>
1 Sensor Housing (two parts) (black)<BR>
1 Oxygen Sensor Operations Manual<BR>
General Sensor Specifications</FONT></TD>
</TR>
</TABLE></CENTER></H3>
<P><CENTER> <FONT SIZE="-1" FACE="Verdana"><A HREF="#top">Back
to Index</A></FONT></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="reqos418"></A><FONT
SIZE="+0" FACE="Verdana">System Requirements for the OS 418 Miniature
Oxygen Sensor</FONT></CENTER></H3>
<UL>
<LI><FONT SIZE="-1" FACE="Verdana">Requires Sensor Cable Model
SC9BNC (sold separately).</FONT>
<UL>
<P><FONT SIZE="-1" FACE="Verdana">The Model SC9BNC is a flexible
coaxial cable with a female Sub-Minax connector on one end (to
the OS-418 oxygen sensor) and a BNC connector on the other to
the OSI-2 instrument.</FONT>
</UL>
<LI><FONT SIZE="-1" FACE="Verdana">Requires Oxygen Sensor Instrument
Model OSI-1 (single channel) or Model OSI-2 (dual channel) (sold
separately).</FONT>
<UL>
<P><FONT SIZE="-1" FACE="Verdana">Model OSI-1 is a single channel
and OSI-2 a dual channel oxygen sensor interrogation system for
use with the Model OS-418 oxygen sensor.</FONT>
</UL>
<LI><FONT SIZE="-1" FACE="Verdana">For the very best results,
the OS-418 requires thermal regulation of the test solution and
the electrode to avoid appreciable thermal drift.<BR>
</FONT>
<LI><FONT SIZE="-1" FACE="Verdana">Requires initial calibration.</FONT>
</UL>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"> <A HREF="#top">Back
to Top</A></FONT></CENTER></P>
<H3><CENTER><FONT SIZE="+0" FACE="Verdana"><HR><IMG SRC="gifs/tbullet.gif"
WIDTH="12" HEIGHT="12" X-SAS-UseImageWidth X-SAS-UseImageHeight
ALIGN="BOTTOM" NATURALSIZEFLAG="0"></FONT><A NAME="prices"></A><FONT
COLOR="#af0000" SIZE="+0" FACE="Verdana">Prices</FONT><FONT FACE="Verdana">
- Miniature Electrodes and Oxygen Sensors</FONT></CENTER></H3>
<P><CENTER><TABLE BORDER="0" CELLPADDING="1" WIDTH="90%" CELLSPACING="2">
<TR>
<TD>
<B><FONT SIZE="-1" FACE="Verdana">RE 803-X Miniature
Reference Electrode; Agº/AgCl, 3M Cl<SUP>-</SUP></FONT></B></TD>
<TD ALIGN="RIGHT">
<B><FONT SIZE="-1" FACE="Verdana">95.00</FONT></B></TD>
</TR>
<TR>
<TD>
<B><FONT SIZE="-1" FACE="Verdana">CPE 905-X Miniature
Combination pH Electrode</FONT></B></TD>
<TD ALIGN="RIGHT">
<B><FONT SIZE="-1" FACE="Verdana">258.00</FONT></B></TD>
</TR>
<TR>
<TD>
<B><FONT SIZE="-1" FACE="Verdana">OS 418 Miniature Oxygen Sensor</FONT></B></TD>
<TD ALIGN="RIGHT">
<B><FONT SIZE="-1" FACE="Verdana">276.00</FONT></B></TD>
</TR>
</TABLE></CENTER></P>
<P><CENTER><A HREF="#top"><FONT SIZE="-1" FACE="Verdana">Back
to Top</FONT></A><FONT SIZE="-1" FACE="Verdana"></FONT></CENTER></P>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"></FONT><TABLE BORDER="0"
CELLPADDING="1" WIDTH="640" CELLSPACING="2">
<TR>
<TD ALIGN="CENTER">
<B><FONT SIZE="-1" FACE="Verdana">ALL PRICES ARE FOB YARDLEY,
PA. TERMS ARE NET 30 AND SUBJECT TO CHANGE WITHOUT NOTICE.</FONT></B></TD>
</TR>
</TABLE><FONT SIZE="-1" FACE="Verdana"></FONT></CENTER></P>
<P><CENTER><FONT SIZE="-1" FACE="Verdana"><HR WIDTH="640"><B>Contact:
</B>Ann M. Wilson</FONT><FONT SIZE="-2" FACE="Verdana">, <I>Manager,
Applications Development</I></FONT></CENTER></P>
<P><CENTER><FONT SIZE="-2" FACE="Verdana">ABTECH Scientific, Inc.<BR>
P.O. Box 376, Yardley, PA 19067-8376<BR>
Telephone Number: +1-215-321-3256 Fax Number: +1-215-321-7099<BR>
e-mail: <I><A HREF="mailto:%[email protected]">[email protected]</A></I><BR>
<HR><EM><STRONG>Last Revision </STRONG></EM>09/12/2000<BR>
<I>© 2000 ABTECH Scientific, Inc. </I><EM><STRONG>You may
send questions/comments to <A HREF="mailto:[email protected]">[email protected]</A></STRONG></EM><I>.</I></FONT></CENTER></P>
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