10 Best Grain Moisture Testers 2025 in the United States

The Delmhorst RDM3 Advanced Moisture Meter is designed for users needing a reliable tool to check grain moisture content. It uses a pin measurement type, which generally offers good accuracy by directly measuring moisture inside the grain. The device includes a digital display and an alarm feature that alerts you when the moisture level reaches a certain point, making it easier to avoid over- or under-drying. It supports data logging, which can be handy for tracking moisture readings over time if you manage multiple grain batches.

This meter is fairly portable at just 1.5 pounds, but with dimensions around 14 by 8.5 inches, it’s a bit larger than some pocket-sized models. It runs on a 9V battery, which is included, so you won’t have to buy one separately. Given the brand’s reputation, the device offers dependable build quality. The surface mount design and the upper temperature rating of 100°C suggest it can handle warm grain conditions but not extreme heat.

The RDM3 represents a solid choice for those seeking a dependable moisture meter with helpful features like alarms and data logging. It is especially suitable for farmers or grain handlers who need consistent accuracy and easy-to-read results. For users who want a highly compact device or require support for a wider variety of grains with detailed calibration options, exploring other models may be beneficial.

The AgraTronix Ag-MAC PLUS Grain Moisture Meter is a solid choice for farmers or grain handlers who need to quickly check moisture levels in various grains. It supports over 20 grain types, making it versatile if you work with different crops. Its measurement range of 5% to 40% covers typical moisture levels needed to monitor for safe storage and quality.

The meter is fairly user-friendly, featuring a multilingual LCD display for easy reading, which can be helpful if English isn’t your first language. Portability is another plus; it runs on 4 AA batteries and comes with a carrying case and strap, so you can comfortably use it in the field without worrying much about damage. The USB connectivity allows for software updates and personalization, a nice feature that keeps the meter adaptable over time. However, it weighs 8.2 pounds, which might feel a bit heavy for some users during long periods of use.

It offers calibration and diagnostic options via USB, though it is not the newest product on the market (first available in 2014), so it may lack some of the latest advancements in moisture testing technology. Customer reviews rate it around 4 out of 5 stars, indicating generally good performance but suggesting some users may find room for improvement. If you want a dependable, portable moisture meter that covers multiple grain types and offers tech-friendly features like USB support, this meter should serve you well, especially if you value durability and ease of use in field conditions.

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.