9 Best Grain Moisture Testers 2025 in the United States

The Agratronix MT-Pro Portable Moisture Tester is a versatile tool for measuring grain moisture. It stands out with its ability to directly read out moisture levels for 40 different grain scales, making it highly compatible with a wide range of grains. Its accuracy is notable, with a readout accuracy of ±0.5%, ensuring precise measurements. The device can test grains with high moisture levels up to 40%, which is beneficial for various grain conditions.

The illuminated multilingual LCD display accommodates English, Spanish, French, German, Italian, Portuguese, and Swedish, thus making it accessible to a broader range of users. The tester includes a protective carrying case with a shoulder strap, enhancing its portability and convenience for on-the-go use. It offers both single-point and precision multi-point calibration, allowing flexibility to match local elevator standards.

Despite its relatively large and heavy size for a handheld tool, weighing 1.94 pounds and measuring 12 x 10 x 5 inches, the device's durability, ease of use, and comprehensive grain compatibility make it a strong choice for professionals who need accurate and reliable grain moisture testing.

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.

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.