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                                                                     EXHIBIT 5.1


                               OPINION OF COUNSEL

We are of the opinion that all of the shares of common stock of Planet Polymer
Technologies, Inc. to be registered by this Registration Statement are validly
issued, fully paid and non-assessable.

We hereby consent to the filing of this opinion as an exhibit to this
Registration Statement and the use of our name wherever it appears in this
Registration Statement.

/s/ BLANCHARD, KRASNER & FRENCH

La Jolla, California
September 21, 2000