10 Best Grain Moisture Meters 2026 in the United States

The Draminski Hay & Straw High-Moisture Meter is designed to measure moisture levels in hay and straw, with a range from 10% to 80%. This covers most typical moisture levels you'd expect when checking quality for storage or processing. It includes a temperature display in Fahrenheit, which is helpful since moisture readings can be affected by temperature. The large LCD with clear numbers makes it easy to read results, and the 22-inch probe allows you to test deeper into bales for more accurate sampling.

The meter operates on a 9-volt battery and weighs about 1.36 kg (around 3 pounds), making it portable enough for field use but not ultra-light. It’s not designed for extremely cold environments (minimum 32°F), so it should be used with caution if working outdoors in freezing temperatures. The device’s durability looks solid with a tabletop mounting option, but it’s primarily intended for hay and silage rather than grains directly. If you need a meter for general grain moisture, this model is more specialized toward hay and straw, which might limit its usefulness in some grain-focused settings.

This meter is a good choice for those who regularly measure moisture in hay or straw and want a clear temperature readout alongside moisture readings. It is user-friendly and offers practical features like minimum, maximum, and average functions. For moisture measurements focused purely on grains or use in very cold conditions, other options may be better suited.

The Agratronix MT-Pro Portable Moisture Tester is a versatile tool designed for accurately measuring moisture in various grains. One of its standout features is the direct readout for 40 different grain scales, making it highly useful for diverse grain testing needs. It can test grains with moisture content up to 40%, which is quite high, and offers a readout accuracy of ±0.5%, ensuring reliable results.

The illuminated multilingual LCD display is another significant advantage, facilitating easier use across different languages and lighting conditions. The inclusion of a protective carrying case with a shoulder strap enhances its portability, making it convenient for field use. Additionally, the device supports both single-point and precision multi-point calibration, allowing users to match local elevator standards, further boosting its accuracy and usability.

The product dimensions (12 x 10 x 5 inches) and weight (1.94 pounds) are manageable but might not be the most compact or lightweight option available, potentially making it a bit cumbersome for some users. Despite being battery-powered and coming with included batteries, the reliance on a 9-volt battery might be considered a drawback for those who prefer rechargeable options. The Agratronix MT-Pro Portable Moisture Tester is a reliable and user-friendly device with excellent features for grain moisture testing, particularly suitable for users needing accurate and multilingual capabilities. Its size and battery type may not be ideal for everyone.

The AgraTronix MT-16 Portable Grain Moisture Tester is designed for accuracy and convenience, making it a solid choice for farmers, cultivators, and grain sellers. One of its key strengths is its precise calibration, which can be adjusted to match local elevator standards. This versatility is further enhanced by its ability to handle 16 different grain scales and a moisture range of 5% to 40%. The backlit display with multilingual settings ensures readability even in low light conditions, which is a nice touch for those working in various environments.

Additionally, the tester can average up to 99 test results, providing a comprehensive overview of moisture levels. Portability is another advantage, with its compact size and lightweight design making it easy to carry around, especially with the included protective carrying case and shoulder strap. However, there are some drawbacks to consider. The device requires two 9V batteries, which, while included, could be seen as a hassle for some users who prefer rechargeable options.

Also, while the moisture display resolution of 0.1% is quite precise, some users may find the relatively small display dimensions (7 x 3 x 3 inches) a bit challenging to read. The MT-16 functions well within a temperature range of 32° to 113°F, but extreme conditions might impact its performance. In summary, the AgraTronix MT-16 offers reliable accuracy and ease of use, making it a suitable tool for those who need a portable and versatile grain moisture tester, despite its minor inconveniences related to battery usage and display size.