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10 Best Grain Moisture Meters 2025 in the United States

#1

Winner

9.9 score

Agratronix MT-Pro Portable Moisture Tester for Grain with Digital Meter Readout, Grain Tester with Carry Case

Accuracy: ±0.5%
Measurement Range: up to 40%
Calibration: single-point, multi-point
Portability: carrying case with strap
Display and Interface: multilingual LCD display

Chosen by 1364 this week

Grain Moisture Tester, Handheld

Accuracy: Gac2100b U.S. Federal Grain Standard
Portability: Compact, Battery Powered, 6.09 pounds
Durability: Solid build, Max Temp 122°F

AMTAST Grain Moisture Meter High Precision Grain Moisture Tester with Temperature Compensation Portable Seed Moisture Meter for 22 Grains Including Wheat, Soybean, Coffee and More

Accuracy: high accuracy, multi-point calibration, temp compensation
Measurement Range: broad measurement range
Calibration: advanced multi-point calibration system
Portability: 9V battery, auto shutdown, tabletop, 1.6 kg
Display and Interface: LCD display
Durability: durable for regular use, no rugged features

Draminski Hay & Straw High-Moisture Meter with Probe Plus Temperature Display

Accuracy: 1.0
Measurement Range: 10% to 80%
Portability: 9V battery, 1.36 kg
Display and Interface: Large LCD, clear numbers, Fahrenheit
Durability: Tabletop mounting option

AgraTronix 30100, Ag-MAC PLUS Grain Moisture Meter

Accuracy: readout for 20+ grain types
Measurement Range: 5% to 40% moisture
Portability: case with handle and strap
Display and Interface: multilingual LCD, USB compatibility
Durability: robust design, protective case

Agratronix MT-PRO+ Portable Grain Moisture Tester

Accuracy: ±0.5%
Measurement Range: 5% to 40%
Portability: Handheld, 5 pounds
Display and Interface: Backlit LCD
Durability: Durable plastic

Agratronix MT-16 Portable Grain Moisture Tester with Digital Meter Display

Accuracy: Moisture display resolution of 0.1%
Measurement Range: 5% to 40%
Calibration: Matches local elevator standards
Portability: Compact, lightweight, with carrying case
Display and Interface: Backlit display, multilingual settings
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Our Top Picks

#1

Winner

Agratronix MT-Pro Portable Moisture Tester for Grain with Digital Meter Readout, Grain Tester with Carry Case

Rating
9.9
Chosen by1,364
Portability

Most important from
67 reviews

Portability
Well-made and easy to use, this durable tester is perfect for keeping in the combine for grain moisture testing.

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.

Rating
9.9
Chosen by1,364
Portability

Most important from
67 reviews

Portability
Well-made and easy to use, this durable tester is perfect for keeping in the combine for grain moisture testing.
#2

AMTAST Grain Moisture Meter High Precision Grain Moisture Tester with Moisture & Temperature Display Seed Moisture Meter for 25 Grains Including Wheat, Soybean, Coffee and More

Rating
9.8
Calibration
Portability

Most important from
71 reviews

Calibration
Calibrating the device initially is necessary, but once done, it provides effective moisture readings.
Portability
Easy to use and great for quick checks during harvesting.

The Grains Moisture Meter AMT65C is designed for farmers and grain sellers, offering the ability to test moisture levels in 25 different types of grains like wheat, corn, and coffee beans. It provides accurate moisture readings quickly, which is a key advantage for those who need immediate results to make swift decisions. The ability to display both moisture and temperature simultaneously is another useful feature, helping users monitor environmental conditions that can affect grain storage and quality. An external temperature sensor can be added, enhancing its versatility.

Additionally, the backlit display ensures readability in various lighting conditions, making it convenient for use in different environments, whether in a dimly lit barn or out in the field. The unit is portable, though it may be a bit bulky for some users due to its 0.88-kilogram weight. Its tabletop mounting might not suit everyone, especially those who need to carry the device around frequently.

In terms of durability, the product appears to be robust enough for regular use. However, it's essential to handle it with care to avoid any damages that could affect its accuracy. The device is powered by alkaline batteries, which are readily available, ensuring that users can keep it operational without difficulty. For those seeking a reliable and relatively easy-to-use moisture meter for a variety of grains, the AMT65C serves as a good option despite some minor portability concerns.

Rating
9.8
Calibration
Portability

Most important from
71 reviews

Calibration
Calibrating the device initially is necessary, but once done, it provides effective moisture readings.
Portability
Easy to use and great for quick checks during harvesting.
#3

Grain Moisture Tester, Handheld

Rating
9.8
Accuracy
Portability
Durability

Most important from
14 reviews

Accuracy
Delivers accuracy within one percentage point compared to professional elevator tests.
Portability
Simple and straightforward operation makes it easy to use in the field.
Durability
A solid and durable build designed to withstand typical farming environments.

This handheld grain moisture tester is designed to measure grain moisture percentage and meets the Gac2100b U.S. Federal Grain Standard, suggesting it provides reliable accuracy for general farming or storage needs. The compact design and battery-powered operation make it fairly portable, though the device weighs over 6 pounds, which might feel a bit heavy compared to other handheld meters.

The device doesn't include batteries, so you will need to provide your own, which is a minor inconvenience. Durability-wise, its solid build and temperature rating up to 122°F indicate it should handle typical field environments reasonably well.

This meter may suit casual users or small-scale farmers looking for a straightforward and federal-standard-compliant tool but could lack advanced features or the lightweight design favored by professionals.

Rating
9.8
Accuracy
Portability
Durability

Most important from
14 reviews

Accuracy
Delivers accuracy within one percentage point compared to professional elevator tests.
Portability
Simple and straightforward operation makes it easy to use in the field.
Durability
A solid and durable build designed to withstand typical farming environments.

Buying Guide for the Best Grain Moisture Meters

Choosing the right grain moisture meter is crucial for farmers, grain handlers, and anyone involved in the storage and processing of grains. A grain moisture meter helps determine the moisture content in grains, which is essential for preventing spoilage, ensuring quality, and optimizing storage conditions. When selecting a grain moisture meter, it's important to consider several key specifications to ensure you get a device that meets your needs and provides accurate, reliable readings.
AccuracyAccuracy refers to how close the moisture meter's readings are to the actual moisture content of the grain. This spec is important because accurate readings help you make informed decisions about drying, storing, and processing your grains. Accuracy is usually expressed as a percentage, with lower percentages indicating higher accuracy. For most users, an accuracy within ±0.5% to ±1% is sufficient. If you need highly precise measurements, look for meters with higher accuracy ratings.
Measurement RangeThe measurement range indicates the range of moisture content levels that the meter can measure. This is important because different grains have different moisture content levels, and you need a meter that can handle the specific range of the grains you are working with. Measurement ranges typically vary from 5% to 40% moisture content. If you work with a variety of grains, choose a meter with a broader range to accommodate different types.
CalibrationCalibration refers to the process of setting the meter to provide accurate readings for different types of grains. This is important because different grains have different properties that can affect moisture readings. Some meters come pre-calibrated for specific grains, while others allow you to manually calibrate for different types. If you work with multiple grain types, a meter with easy calibration options will be more versatile and useful.
PortabilityPortability refers to how easy it is to carry and use the moisture meter in different locations. This is important for users who need to take measurements in the field, at different storage sites, or in various processing facilities. Portable meters are typically lightweight, battery-operated, and easy to handle. If you need to move around frequently, look for a compact and portable model.
Display and InterfaceThe display and interface of the moisture meter determine how easy it is to read and interpret the measurements. This is important because clear and easy-to-read displays help you quickly understand the moisture content and make decisions. Look for meters with large, backlit displays and intuitive interfaces. Some advanced models also offer digital readouts and additional features like data logging and connectivity to other devices.
DurabilityDurability refers to the meter's ability to withstand tough conditions and regular use. This is important for users who work in harsh environments or need a device that can handle frequent use. Durable meters are typically made from robust materials and may have features like water resistance and shockproof designs. If you work in challenging conditions, choose a meter that is built to last.

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