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10 Best Hay Moisture Testers 2026 in the United States

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Our Top Picks

#1

Winner

Delmhorst RDM3 Advanced Rdm-3 Moisture Meter, Basic Package

The Delmhorst RDM3 Moisture Meter is a solid choice for checking moisture levels in hay and other agricultural materials. It uses pin-type measurements, which provide a direct and reliable moisture reading by physically penetrating the material. The digital display makes it easy to read results, and the built-in alarm can alert users when moisture reaches critical levels, helping to prevent spoilage.

It also features data logging, allowing you to keep track of moisture over time, which is helpful when monitoring multiple samples or batches. The meter runs on a standard 9-volt battery, which is convenient and included with the package. It can handle temperatures up to 100°C, making it durable enough for most farm environments.

This user-friendly device includes important features like temperature compensation and data logging, making it well-suited for farmers or professionals who want a dependable tool without complicated setup.

#2

Agratronix Advanced Hay Straw And Silage Moisture Tester With Durable 20" Probe

Rating
8.8
Accuracy
Temperature Compensation

Most important from
9 reviews

Accuracy
Accuracy is outstanding, making it worth the extra effort compared to other testers.
Temperature Compensation
Temperature registration is slower compared to other temperature probes.

The Agratronix Advanced Hay Straw and Silage Moisture Tester is a robust tool designed to help farmers and agricultural professionals measure the moisture content in hay, straw bales, and silage accurately. With a moisture measurement range of 8% to 72%, it covers a wide spectrum suitable for various farming needs. The 20-inch stainless steel probe is particularly useful for dense bales, offering durability and ease of handling due to its rubber grip handle. This makes it less likely to suffer damage over long-term use, even under heavy-duty conditions.

The automatic density compensation feature ensures that the readings are adjusted based on the density of the bale, enhancing the accuracy of the results. The bright LCD display is user-friendly, allowing for easy reading both during the day and at night, and supports multiple languages including English, Spanish, French, and Portuguese, making it accessible to a broader range of users. Additional customizable modes for different types of materials (hay, straw, silage) further ensure precise readings tailored to specific needs.

Temperature compensation is another strong point as it can measure temperatures between 14° to 176° Fahrenheit, which is crucial for accurate moisture readings. The tester requires a 9-volt battery, which is not included, potentially adding an extra step for users before they can start using the device. It also has a USB port for saving readings and downloading firmware updates, adding a layer of convenience. This moisture tester is portable, weighing 3.34 pounds, making it easy to carry around the farm. For those in the agricultural sector looking for a reliable and durable moisture tester, this Agratronix model presents itself as a valuable tool.

Rating
8.8
Accuracy
Temperature Compensation

Most important from
9 reviews

Accuracy
Accuracy is outstanding, making it worth the extra effort compared to other testers.
Temperature Compensation
Temperature registration is slower compared to other temperature probes.
#3

Agratronix BHT-2 Advanced Baler-Mounted Hay Moisture Tester

Rating
8.5
Accuracy
Display Type

Most important from
59 reviews

Accuracy
It's very handy for getting a field view of moisture, ensuring accurate readings across the entire field.
Display Type
The display updates moisture content every few seconds, providing real-time data crucial for monitoring hay quality.

The Agratronix BHT-2 Advanced Baler-Mounted Hay Moisture Tester is designed for farmers and agricultural professionals who need accurate moisture readings to ensure quality hay. One of its notable strengths is the multi-sensor technology, which provides readings from both sides of the bale and through it, enhancing accuracy. The average readings are updated every 2 to 3 seconds, allowing users to monitor moisture levels in real time, which is essential for preventing spoilage.

The large LCD display is another plus, making it easy to view results in various lighting conditions, whether it's day or night. Users can also set their own moisture limits, which adds a layer of customization and helps in making quick decisions about the hay's condition.

There are a few drawbacks to consider. While the moisture range and accuracy are good, some users might expect even higher precision, particularly for critical applications. Additionally, the product's age, first available in 2012, may raise concerns about its longevity and advancements in technology compared to newer models. Moreover, since it does not come with batteries included, users will need to prepare for that extra cost. Durability is acceptable with its ABS material construction, but practical use in demanding agricultural environments might challenge its resilience over time. The Agratronix BHT-2 is a solid option for those needing reliable hay moisture readings, offering user-friendly features and good performance, though potential buyers should weigh its limitations against their specific needs.

Rating
8.5
Accuracy
Display Type

Most important from
59 reviews

Accuracy
It's very handy for getting a field view of moisture, ensuring accurate readings across the entire field.
Display Type
The display updates moisture content every few seconds, providing real-time data crucial for monitoring hay quality.

Buying Guide for the Best Hay Moisture Testers

Choosing the right hay moisture tester is crucial for ensuring the quality and safety of your hay. A good hay moisture tester helps you determine the moisture content in your hay, which is important for preventing mold growth and spontaneous combustion. When selecting a hay moisture tester, consider the following key specifications to find the best fit for your needs.
Moisture RangeThe moisture range indicates the range of moisture levels that the tester can measure. This is important because different types of hay and storage conditions may require different moisture levels. Typically, a moisture range of 8% to 40% is sufficient for most hay types. If you are dealing with very dry or very wet hay, you may need a tester with a wider range. Choose a moisture range that covers the typical moisture levels of the hay you are working with.
AccuracyAccuracy refers to how close the tester's readings are to the actual moisture content. This is crucial for making informed decisions about hay storage and usage. Accuracy is usually expressed as a percentage, such as ±1%. Higher accuracy is better, but it may come at a higher cost. For most users, an accuracy of ±1% to ±2% is sufficient. If you need very precise measurements, look for a tester with higher accuracy.
Probe LengthThe probe length determines how deep the tester can measure moisture within a bale of hay. This is important for getting an accurate reading, especially in large bales. Common probe lengths range from 10 inches to 24 inches. For small bales, a shorter probe may be sufficient, while larger bales may require a longer probe to reach the center. Choose a probe length that matches the size of the bales you typically handle.
Display TypeThe display type refers to how the moisture readings are shown on the tester. Common display types include digital screens and analog dials. Digital screens are easier to read and often provide more precise readings, while analog dials are simpler and may be more durable. Consider your preference for readability and ease of use when choosing a display type.
Temperature CompensationTemperature compensation adjusts the moisture readings based on the temperature of the hay, providing more accurate results. This is important because temperature can affect moisture readings. Some testers have automatic temperature compensation, while others require manual adjustment. If you frequently test hay in varying temperatures, look for a tester with automatic temperature compensation for convenience and accuracy.
DurabilityDurability refers to how well the tester can withstand regular use and harsh conditions. This is important for ensuring the tester lasts a long time and provides reliable readings. Look for testers made from sturdy materials and with good build quality. If you work in tough environments, consider a tester with additional protective features, such as water resistance or shockproof design.

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