Exhibit 99.1


From:
        IPI, Inc.
        8091 Wallace Road
        Eden Prairie, Minnesota 55344
        United States
        952-975-6246
        www.insty-prints.com
        Contact: David Engel, CFO


FOR IMMEDIATE RELEASE                                          September 5, 2001


                    IPI PURCHASES 5.1% OF CLARENT CORPORATION

         MINNEAPOLIS, MN, September 5, 2001 - IPI, Inc. (Amex: IDH) the parent
company of Insty-Prints, Inc., franchisor of Insty-Prints fast-turnaround
business printing centers, and Change of Mind Learning Systems, Inc., a
franchisor of learning centers, announced that it had purchased 2,081,800 shares
or approximately 5.1% of the outstanding common stock of Clarent Corporation
(Nasdaq NM: CLRN) at a cost of $12,485,030. Clarent Corporation is a California
based internet protocol service provider. The purchase was financed with the
working capital of IPI in a series of transactions.

IPI made its investment based on its review of Clarent's most recent 10-Q for
the quarter ended June 30, 2001, filed August 14, 2001, which reported Working
Capital of over $6.08 per share and Net Book Value of over $10.60 per share.
Further, in its July 18, 2001 Conference Call Clarent officials commented on
positive trends in its business, projected it would break even in 2002 and
stated it had approximately $200 million in cash ($5.00 per share) in early July
2001. IPI's average basis in the Clarent stock is just under $6.00 per share.

In a press release from Clarent this morning, Clarent reported that it is
conducting an investigation into potential material overstatement of Clarent's
first and second quarter revenues and earnings from those previously reported.
At this time, IPI has no knowledge if any Clarent adjustments will be necessary.
IPI has recognized over $16.7 million in pretax gains on its other investments
in 2001.

From time to time, the Company has invested and may invest in other businesses
or companies other than its core business of franchising and operating fast
turnaround business printing operations and franchising learning centers.
Although the Company has invested in other businesses or companies, the Company
does not intend to become an investment company.

-MORE-





IPI, Inc. is the parent company of Insty-Prints, Inc. and Change of Mind
Learning Systems, Inc. Insty-Prints is a leading franchisor of approximately 215
fast turnaround business printing operations and had total 2000 system sales of
approximately $124 million. Change of Mind Learning Systems, Inc. is a
franchisor of learning centers that is in its early stage of development.

Any forward-looking statements in this release are made pursuant to the safe
harbor provisions of the Private Securities Litigation Reform Act of 1995.
Investors are cautioned that all forward-looking statements involve risk and
uncertainties including, without limitation, risks in product development and
market acceptance of and demand for the Company's products, risks of downturns
in economic conditions generally and specifically, risks associated with
competition and competitive pricing pressures and other risks detailed in the
Company's filings with the Securities and Exchange Commission.


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