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<title>Prepared By R.R. Donnelley Financial -- Form 8-K</title>
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<b>UNITED STATES </b></font></div>

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<b>SECURITIES AND EXCHANGE COMMISSION </b></font></div>

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<b>Washington, D.C. 20549 </b></font></div>

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<b>Form 8-K </b></font></div> <div><font Size="1">&nbsp;</font></div>

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<b>Current Report </b></font></div>

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<b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </b></font></div>

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<b>Date of Report (Date of earliest event reported):&nbsp;&nbsp;08/13/2007 </b></font></div>




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<b>O.I. CORPORATION </b></font></div>

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<b>(Exact name of registrant as specified in its charter)</b></font></div>

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<b>Commission File Number:&nbsp;&nbsp;0-6511</b></font></div>

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<div Align="center"><font Face="times New Roman" Size="3" Color="#000000"><b>Oklahoma</b></font>
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<b>(State or other jurisdiction of</b></font>
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<div Align="center"><font Face="times New Roman" Size="2" Color="#000000"><b>(IRS Employer</b></font>
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<b>incorporation)</b></font>
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<b>Identification No.)</b></font>
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<b>151 Graham Road</div><div Align="center">P.O. Box 9010</div><div Align="center">College Station, TX 77842</b></font></div>


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<b>(Address of principal executive offices, including zip code)</b></font>
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<b>(979) 690-1711 </b></font>
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<b>(Registrant&#146;s telephone number, including area code)</b></font>
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<b> </b></font>
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<b>(Former name or former address, if changed since last report) </b></font>
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<b>Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:<BR><BR>
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<b>[&nbsp;&nbsp;]&nbsp;&nbsp;
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>

[&nbsp;&nbsp;]&nbsp;&nbsp;
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>


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Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>


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Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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Information to be included in the report</b>
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<b>Item 7.01.&nbsp;&nbsp;&nbsp;&nbsp;Regulation FD Disclosure</b></font>
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On August 13, 2007, O. I. Corporation issued a press release announcing the preliminary results of the Company's modified Dutch auction tender offer.  A copy of the press release is attached as Exhibit 99.1 hereto and its contents are incorporated herein by reference.<p>In accordance with General Instruction B.2 of Form 8-K, the information contained in this Report, including the exhibit attached hereto, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference into any filing under the Securities Exchange Act of 1934, as amended, or the Securities Act of 1933, as amended, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific reference in such filing.</font>
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<b>Item 9.01.&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits</b></font>
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(d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Exhibits<p>Exhibit 99.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Press Release of O. I. Corporation dated August 13, 2007</font>
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<b>Signature(s) </b></font>
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Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized. </font>
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	O.I. CORPORATION</font>
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	Date: August 14, 2007</font>
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	By:</font>
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	/s/&nbsp;&nbsp;&nbsp;&nbsp;J. Bruce Lancaster</font>
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	J. Bruce Lancaster</font>
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	<div><font Face="times New Roman" Size="2" Color="#000000">CEO & CFO</font>
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<b>Exhibit Index </b></font>
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	<b>Exhibit&nbsp;No.</b></font>
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	<b>Description</b></font>
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	EX-99.1</font>
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	Press Release of O. I. Corporation dated August 13, 2007</font>
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Prepared By R.R. Donnelley Financial -- Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 8-K
Current Report
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):  08/13/2007
O.I. CORPORATION
(Exact name of registrant as specified in its charter)
Commission File Number:  0-6511
Oklahoma
73-0728053
(State or other jurisdiction of
(IRS Employer
incorporation)
Identification No.)
151 Graham Road
P.O. Box 9010
College Station, TX 77842
(Address of principal executive offices, including zip code)
(979) 690-1711
(Registrant's telephone number, including area code)
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
[  ]  
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[  ]  
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[  ]  
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[  ]  
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Information to be included in the report
Item 7.01.    Regulation FD Disclosure
On August 13, 2007, O. I. Corporation issued a press release announcing the preliminary results of the Company's modified Dutch auction tender offer.  A copy of the press release is attached as Exhibit 99.1 hereto and its contents are incorporated herein by reference.
In accordance with General Instruction B.2 of Form 8-K, the information contained in this Report, including the exhibit attached hereto, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference into any filing under the Securities Exchange Act of 1934, as amended, or the Securities Act of 1933, as amended, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific reference in such filing.
Item 9.01.    Financial Statements and Exhibits
(d)        Exhibits
Exhibit 99.1        Press Release of O. I. Corporation dated August 13, 2007
Signature(s)
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.
O.I. CORPORATION
Date: August 14, 2007
By:
/s/    J. Bruce Lancaster
J. Bruce Lancaster
CEO & CFO
Exhibit Index
Exhibit No.
Description
EX-99.1
Press Release of O. I. Corporation dated August 13, 2007