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  • F B Lerch and Co
    F B Lerch and Co
    206.782.6588
    1515 NW 52nd St Ste B, 98107-3862  Seattle

    The minimum shelf life is one year. We have found many of our products to be stable, if not opened, for up to 3 years. ProTek uses one of the highest quality IN-CAN PRESERVATIVES available on the market.