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9 Best Grain Moisture Testers 2025 in the United States

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Our Top Picks

#1

Winner

Agratronix Coffee Moisture Tester Model 08150

The Agratronix Coffee Moisture Tester Model 08150 is a specialized device designed for measuring the moisture content in various coffee commodities, including green coffee, parchment coffee, and cocoa. Its accuracy ranges from 4% to 40%, depending on the type of coffee, making it a versatile tool for coffee producers and enthusiasts who need precise moisture readings. The backlit multilingual display ensures that users can easily read results even in low-light conditions, enhancing its usability.

Additionally, the device offers both a basic mode and an advanced precision calibration mode, allowing for flexibility in measurement depending on the user's needs. This tester is handheld and portable, making it convenient to use in various settings. However, it is noteworthy that the device requires two 9V batteries, which are not included, adding an extra step before use. The tester is also calibrated to match local elevator tabletop moisture testers, providing compatibility with professional equipment for more accurate results.

While it does offer precise measurements, it is limited to a specific moisture range and might not be suitable for other grains beyond coffee and cocoa. The product is durable and operates well within a broad temperature range from 32°F to 113°F, catering to different environmental conditions. The Agratronix Coffee Moisture Tester is a reliable and user-friendly device for those specifically dealing with coffee commodities, though its application is somewhat limited to that niche.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Ease of Use
Fast and easy to use, provides quick results.
#2

Grains Moisture Meter Smart Grain Moisture Tester for 25 Grains Moisture Testing Rapeseed Wheat Spring Barley Field Bean Corn Winter Barley Oats Buckwheat Coffee Beans Radish Seeds Peanuts AMT65C

The AMT65C Grains Moisture Meter is a versatile tool that can measure the moisture content of 25 different types of grains, including common ones like wheat, corn, and soybeans, as well as more specialized grains such as rapeseed and coffee beans. It offers both moisture and temperature readings simultaneously on a backlit display, which is practical for users who need quick, accurate data in various lighting conditions.

The option to connect an external temperature sensor adds to its versatility. Weighing only 0.88 kilograms and with compact dimensions, it is portable and easy to handle, making it suitable for both field and tabletop use. The use of alkaline batteries ensures it can be powered conveniently and is not dependent on frequent recharges.

Users looking for a reliable and multi-functional grain moisture tester will find this product useful.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Accuracy
Calibrating it is essential, but once done, it accurately measures moisture in cacao seeds.
Ease of Use
Easy to use for quick moisture checks.
Calibration
Calibrating it is essential, but once done, it accurately measures moisture in cacao seeds.
#3

John Deere Moisture Tester SW08120

The John Deere Moisture Tester SW08120 is a robust tool designed for farmers and grain handlers. This device stands out with its impressive accuracy of ± 0.5% in the normal moisture range for stored grain, offering reliable and precise moisture readings. It caters to a wide variety of grains, with direct readouts available for 40 different grain scales, making it highly versatile in grain compatibility.

The measurement range is broad, operating between 5% to 40% moisture depending on the type of grain, which covers most practical needs in grain testing. One of the significant user-friendly features is the larger, illuminated graphic LCD display, which makes it easier to read results even in low light conditions. Additionally, the automatic averaging of consecutive tests and the option to store calibration data for all grains enhance its ease of use.

Portability is another strong suit, given its compact dimensions (9 x 5.2 x 5.1 inches) and light weight (2.4 pounds), making it convenient to carry around. Calibration is straightforward with the device storing average calibration for all grains, ensuring consistent accuracy over time. However, users should be aware that while this moisture tester is quite sophisticated, it may come with a learning curve for those unfamiliar with such equipment. Additionally, as it was first available in 2013, it might lack some of the latest technological advancements present in newer models. This device is ideal for professionals in agriculture who need a reliable, portable, and accurate moisture tester for a variety of grains.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Accuracy
Highly accurate readings.

Buying Guide for the Best Grain Moisture Testers

Choosing the right grain moisture tester is crucial for farmers, grain handlers, and anyone involved in the storage and processing of grains. The right tester ensures that your grains are stored at optimal moisture levels, preventing spoilage and maintaining quality. When selecting a grain moisture tester, consider the following key specifications to ensure you get the best fit for your needs.
AccuracyAccuracy refers to how close the moisture readings are to the actual moisture content of the grain. This is important because accurate readings help in making informed decisions about drying, storage, and processing. Accuracy is usually expressed as a percentage. High accuracy (within ±0.5%) is ideal for critical applications, while moderate accuracy (within ±1%) may be sufficient for less critical uses. Choose a tester with the accuracy level that matches the precision you need for your operations.
Measurement RangeThe measurement range indicates the range of moisture content that the tester can measure. This is important because different grains have different optimal moisture levels. A wider measurement range (e.g., 5% to 40%) is more versatile and can handle a variety of grains and conditions. If you work with multiple types of grains or need to measure moisture at different stages (e.g., harvest, storage), a tester with a broad range is beneficial. For single-grain operations, a narrower range that matches the specific grain's moisture levels may suffice.
Grain CompatibilityGrain compatibility refers to the types of grains the tester can accurately measure. This is important because not all testers are designed to handle all types of grains. Some testers are versatile and can measure a wide variety of grains, while others are specialized for specific types. If you handle multiple grain types, look for a tester with broad compatibility. If you focus on a specific grain, ensure the tester is optimized for that grain to get the most accurate readings.
Ease of UseEase of use encompasses how simple and intuitive the tester is to operate. This is important because a user-friendly tester can save time and reduce the likelihood of errors. Features like a clear display, simple calibration, and straightforward operation contribute to ease of use. If you need quick and frequent measurements, look for a tester with a user-friendly design. For occasional use, ease of use may be less critical, but still beneficial.
PortabilityPortability refers to how easy it is to carry and use the tester in different locations. This is important for fieldwork and on-site measurements. Portable testers are typically lightweight and battery-operated, making them convenient for use in various settings. If you need to measure moisture content in the field or move between different storage sites, a portable tester is essential. For stationary use, portability may be less of a concern.
DurabilityDurability refers to the tester's ability to withstand rough handling and harsh environments. This is important because grain testing often occurs in challenging conditions. Durable testers are built with robust materials and can resist dust, moisture, and impact. If you work in tough environments or need a tester that can handle frequent use, look for one with high durability. For controlled environments, durability may be less critical, but still a good feature to have.
CalibrationCalibration refers to the process of setting the tester to provide accurate readings. This is important because regular calibration ensures the tester remains accurate over time. Some testers come with automatic calibration features, while others require manual calibration. If you need consistent accuracy and ease of maintenance, look for a tester with automatic or easy-to-perform calibration. For occasional use, manual calibration may be sufficient.

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