EM•1® Microbial Inoculant
The original EM® microbial inoculant for soil, plants, compost, and water. OMRI Listed® for specified uses. From 16 oz bottles to 275-gallon totes.
From $25.50
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A natural approach to a healthier planet
Authentic EM® Technology. Direct from the source.
Naturally occurring beneficial microorganisms for soil, compost, water, and everyday living, made in Tucson by the sole authorized manufacturer of EM Technology® for the United States and Canada.
Farming at scale? Request a bulk quote
Where EM Technology® makes a difference
One microbial technology. Many real-world uses.
Agriculture
Soil biology for commercial crop production.
Home and garden
Beds, lawns, and container plants.
Composting
Organic matter breakdown and odor management.
Water and septic
Septic, pond, and wastewater programs.
Livestock and aquaculture
Farm environment, manure, and pond management.
Wellness
ProEM•1® and EM•X Gold® fermented products.
What is EM Technology®?
A natural, stable microbial community.
Effective Microorganisms® (EM®) are three groups of naturally occurring, beneficial microorganisms, lactic acid bacteria, yeasts, and photosynthetic bacteria, kept together as one stable community. Professor Teruo Higa developed EM Technology® at the University of the Ryukyus in Okinawa, Japan, and it is used today in more than 100 countries. The organisms are not genetically modified.
Learn more about EM®
Scanning electron micrographs © 2018 Gustavo Pinoargote. All rights reserved.
Flagship EM® products
Made under license from EM Research Organization, Inc.
ProEM•1® Organic Liquid Probiotic
An organic liquid probiotic made with EM Technology® in our Tucson facility.
$39.95
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For commercial operations
Bulk EM•1® from the manufacturer
Pails, drums, and 275-gallon totes shipped from Tucson. Our technical team works with you on your crop, acreage, and current program, and provides safety data sheets and organic-compliance documentation.
Prefer to talk? 520-492-2010, Monday to Friday, 9 to 5 (Arizona time)
Four decades of documented work
From Professor Higa's laboratory in Okinawa to growers and partners across the Americas.
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Early 1980s
EM® is developed in Okinawa
Professor Teruo Higa, a horticulture researcher at the University of the Ryukyus, found that specific groups of naturally occurring microorganisms could be combined into a stable, beneficial community. He named them Effective Microorganisms®.
About Professor Higa -
1997
First U.S. patents granted to Dr. Higa
U.S. Patent 5,591,634 describes a microbiological method for processing organic waste materials. U.S. Patent 5,602,065, granted the same year, describes a process for preparing functional ceramics.
Read U.S. Patent 5,591,634 -
1998
A further patent on organic waste processing
U.S. Patent 5,707,856, also granted to Teruo Higa, extends his microbiological method for organic waste materials.
Read U.S. Patent 5,707,856 -
2002
EMRO USA begins manufacturing in Tucson
Founded as EM Hawaii in 1997 and incorporated in Arizona in 2001, EMRO USA began manufacturing EM•1® in Tucson in November 2002 as the authorized manufacturer for the United States and Canada.
About EMRO USA -
2018
Peer-reviewed aquaculture research
Studies of EM•1® in shrimp production, conducted at the University of Arizona, were published in Aquaculture Research and the Journal of Probiotics & Health.
See the citations -
Today
Used in more than 100 countries
EM Technology® is applied in agriculture, environmental management, and everyday living worldwide. EMRO USA supplies the United States and Canada.
Patents are cited as part of the historical and scientific record of EM Technology®. The patents listed have expired, and EMRO USA does not represent any product as covered by them.
Knowledge you can check
Science, documentation, and certificates in one place.
Application guides
How EM•1® is used across crops, compost, water, and farms.
The science of EM®
The microorganisms, the research, and answers to common questions.
Certificates and documents
OMRI, USDA Organic, NSF GMP, and EMRO authorization certificates.
How to identify authentic EM®
What to check before you buy.
Healthy soil. Living water. Stronger communities.
EMRO USA brings EM Technology® to the United States and Canada, working with growers, families, and communities toward a more sustainable future.
About EMRO USAEM®, Effective Microorganisms®, EM Technology®, EM•1®, ProEM•1®, and EM•X Gold® are trademarks of EM Research Organization, Inc. (Japan), used under license by EMRO USA, Inc. OMRI Listed® is a registered trademark of the Organic Materials Review Institute.