Moisture Testers for Nutritionists, Farmers and Educators


Check out our Koster Dealers

View our list of US-based and International Koster Moisture Tester dealers.

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Frequently Asked Questions

View a list of answers to our most frequently asked questions.
If you don’t see the answer you’re looking for, contact us!

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Product Files

Find any of the files and documents you might need for any of our Koster products.

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Returns, Service & Warranty

Get information regarding product returns, servicing, and warranty information.

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Become a Koster Dealer

Learn about the benefits and requirements of becoming a certified Koster dealer.

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