Exhibit 99.1

                SONO-TEK ANNOUNCES ADDITIONAL EQUITY INVESTMENTS

    MILTON, N.Y., April 15 /PRNewswire-FirstCall/ -- Sono-Tek Corporation (OTC
Bulletin Board: SOTK) the world's leader in ultrasonic spray nozzle technology,
announced today that the Empire State Development (a New York State Agency),
Small Business Technology Investment Fund had approved a $500,000 investment in
Sono-Tek Corporation. This was announced by them on April 8, 2005. A copy of the
announcement follows:

    Empire State Development Announcement -

              GARGANO: STATE MAKES INVESTMENT IN HIGH TECH COMPANY

                 State Awards $500,000 To Ulster County Company

    Empire State Development Chairman Charles A. Gargano announced today that
Sono-Tek Corp. in Ulster County has been approved to receive a $500,000 equity
investment from the Small Business Technology Investment Fund (SBTIF). The
action was approved by the Empire State Development Board of Directors.

    The SBTIF was created to provide start-up high-tech companies throughout New
York State with a source of venture capital to promote job creation and economic
growth.

    "The Small Business Technology Investment Fund is another valuable tool New
York State uses to help companies grow and prosper," Gargano said. "The Fund's
success has allowed us to continue to use revolving returns to keep investing in
companies at no cost to taxpayers as we continue to lead the nation in high-tech
growth and development."

    Sono-Tek Corp, located in Milton, N.Y., manufactures patented ultra sonic
spray nozzles, atomizers and coating systems. The company's products are used in
various industry applications.

    The Fund provides access to capital for New York's start-up high technology
companies. The Fund makes debt and equity investments and offers technical and
managerial services to growing technology-based business ventures. It includes a
matching-fund requirement to ensure companies receiving State investments have
adequate funds to achieve their goals.

    Information about the Small Business Technology Investment Fund is available
by visiting the Empire State Development web site at http://www.nylovesbiz.com,
by calling 1-800-STATE NY or via e-mail at esd_sbtif@empire.state.ny.us.

    Source:  Empire State Development

    Private Institutional Equity Investment

    In a separate unrelated transaction, another Institutional investor
purchased 125,000 shares of common stock from the Company for $287,500.



    Christopher L. Coccio, Ph.D., President & CEO of Sono-Tek, was quoted "These
two investments demonstrate the confidence that our state and the investment
community has in our Company and its excellent technology. Proceeds from these
investments will be used to fund Sono-Tek's technology development programs, to
expand its domestic and international markets, and to repay debt. In the past
fiscal year, Sono-Tek has increased revenues by over 60%, sharply increased
operating profits, and increased employment by over 50%. Much of this growth is
attributable to Sono-Tek's activities in medical device coating applications
(arterial stents and other devices) and other innovative industrial coating
applications both here and abroad. "

    For further information, contact Dr. Christopher L. Coccio, President and
CEO at 845-795-2020, or visit our website at http://www.sono-tek.com.

    This press release contains forward-looking statements regarding future
events and the future performance of Sono-Tek Corporation that involve risks and
uncertainties that could cause actual results to differ materially. These
factors include, among other considerations, general economic and business
conditions; political, regulatory, competitive and technological developments
affecting the Company's operations or the demand for its products; timely
development and market acceptance of new products; adequacy of financing;
capacity additions and the ability to enforce patents. We refer you to documents
that the company files with the Securities and Exchange Commission, which
includes Form 10-KSB and Form 10-QSBs containing additional important
information.

SOURCE  Sono-Tek Corporation
    -0-                             04/15/2005

    /CONTACT:  Dr. Christopher L. Coccio, President and CEO of Sono-Tek
Corporation, +1-845-795-2020 /
    /Web site:  http://www.sono-tek.com