Description
Product Overview
The IM-31 Ink-Tag Marker is engineered specifically for polyurethane ear tags used in livestock identification, delivering a level of permanence and clarity that standard markers cannot match. Manufactured by Arro-Mark Company under the Mighty Marker brand, this marker combines a contoured grip for comfortable handling with a precision‑engineered 4.0mm chisel tip that creates bold, easily readable lines on the smooth surface of polyurethane tags. The valve‑action mechanism ensures a consistent ink flow, preventing the tip from drying out even if the cap is removed briefly, which is essential for busy farm environments where time is at a premium.
Each marker is filled with 10 ml of high‑visibility black ink, a capacity that far exceeds typical markers and reduces the frequency of replacements during intensive marking operations. The ink formulation is industrial‑grade, offering waterproof, fade‑resistant, and abrasion‑resistant properties that guarantee legibility for up to ten years of exposure to sunlight, rain, snow, and extreme temperature fluctuations. The marker complies with U.S. manufacturing standards, reinforcing its reliability and durability for both agricultural and industrial applications.
Beyond its functional attributes, the IM-31’s design incorporates a durable metal barrel that protects the internal ink reservoir from impact and accidental drops, while the ergonomic contoured grip minimizes hand fatigue during prolonged use. The black color of the marker body provides a professional appearance and easy identification among other tools in a farm or warehouse setting. The product is packaged in a convenient six‑pack, allowing teams to equip multiple workers or maintain a ready supply for ongoing tagging projects.
![[Product front view showing all components]](https://www.allexpo.store/wp-content/uploads/2026/07/5419bc714b1d4d4b997f252a22391112.jpg)
Usage
Designed for both indoor and outdoor environments, the IM-31 excels in a variety of real‑world scenarios. On a cattle ranch, workers can quickly and accurately label ear tags, ensuring each animal is uniquely identified for health monitoring, breeding records, and regulatory compliance. The marker’s chisel tip cuts through the slick polyurethane surface without slipping, producing clear, permanent markings that remain legible even after the animal has been exposed to mud, rain, and sunlight.
In industrial settings, the marker is equally effective for tagging equipment, safety labels, and inventory tags made from polyurethane or similar plastics. Its waterproof and fade‑resistant ink prevents loss of critical information during cleaning cycles, chemical exposure, or prolonged storage in harsh warehouses. The valve‑action system also makes the marker suitable for field technicians who may need to pause work and later resume marking without worrying about ink drying or clogging.
Because the marker is made in the United States, it meets stringent quality controls that are essential for organizations that require traceability and compliance with industry standards. Whether used on a small family farm or a large commercial operation, the IM-31 provides a dependable solution for any tagging task that demands durability, readability, and ease of use.
Why Choose Us
Choosing the IM-31 Ink-Tag Marker means selecting a product that combines American craftsmanship with specialized formulation for polyurethane tagging. The marker’s industrial‑grade ink is formulated to resist UV degradation, ensuring that markings do not fade even after years of direct sunlight exposure. This longevity reduces the need for re‑tagging, saving labor costs and minimizing animal stress.
Our commitment to quality is reflected in the robust construction of the marker body, which protects the ink from temperature extremes and accidental impacts. The contoured grip design reduces hand strain, allowing users to apply multiple tags in succession without discomfort. Additionally, the valve‑action mechanism eliminates common issues such as ink blotting or inconsistent flow, delivering a smooth writing experience that enhances productivity.
Customer support is a cornerstone of the Mighty Marker brand. Should you encounter any issues, our dedicated service team is available to provide troubleshooting assistance, replacement parts, or guidance on optimal usage techniques. We stand behind our products with a satisfaction guarantee, reinforcing our confidence in the durability and performance of the IM-31.
Key Features
- Specially formulated ink for permanent, waterproof marks on polyurethane ear tags.
- Durable 4.0mm chisel tip creates bold, legible strokes even on slick surfaces.
- Valve‑action mechanism ensures consistent ink flow and prevents drying.
- 10 ml ink capacity reduces the need for frequent replacements during large tagging projects.
- U.S. manufacturing guarantees premium quality and reliable after‑sales support.
FAQ
Can the marker be used on materials other than polyurethane?
Yes, the IM-31 works well on other smooth plastics such as PVC and ABS, but its formulation is optimized for the chemical composition of polyurethane tags to provide the best adhesion and durability.
How long does the ink remain usable after the cap is removed?
The valve‑action system keeps the ink from drying out for several hours, allowing you to set the marker down and resume work without loss of performance.
Is the marker suitable for use in extreme temperatures?
The marker is designed to operate from -20 °C to 50 °C (-4 °F to 122 °F) without compromising ink flow or tip integrity, making it ideal for both winter and summer field conditions.
What is the warranty period for the IM-31 marker?
We offer a one‑year limited warranty covering manufacturing defects, backed by our responsive customer service team for any replacement or technical assistance.
Can the marker be refilled with additional ink?
The IM-31 is a sealed unit and is not intended for refilling. When the ink is depleted, the marker should be replaced to maintain optimal performance and safety.




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