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Class F Calibration Weights – NIST Traceable, 25kg
Introduction to Calibration Weights
Calibration is essential in laboratories, pharmaceuticals, manufacturing, and commercial weighing. Accurate measurements support quality control, regulatory compliance, and product reliability. To achieve this accuracy, scales and balances must be verified using certified calibration weights.
Test weights, including NIST Class F, are designed to confirm scale performance and measurement accuracy. They are built for repeated use in demanding environments while maintaining precise tolerances.
What Are NIST Class F Weights?
NIST Class F weights are commonly used to calibrate higher-capacity and lower-sensitivity weighing devices. These weights meet accuracy limits defined by the National Institute of Standards and Technology (NIST) and are suitable for industrial and commercial applications.
They are typically used with:
- Bench scales
- Floor scales
- Industrial balances
- Shipping and receiving scales
Class F weights provide a reliable balance between durability and precision.
Materials and Construction
Class F calibration weights are manufactured from durable materials to ensure long-term stability and resistance to wear.
Common material options include:
- Cast iron – Ideal for heavy-duty industrial environments
- Stainless steel – Corrosion-resistant and easy to clean
Each weight is produced to strict dimensional and tolerance requirements. This ensures consistent performance and compatibility with a wide range of weighing equipment.
NIST Traceability and Compliance
NIST Class F weights follow the guidelines outlined in NIST Handbook 105-1. These standards define allowable tolerances and verification methods for calibration weights.
Key compliance benefits include:
- Traceability to national measurement standards
- Support for internal quality audits
- Alignment with regulatory and legal metrology requirements
Certified NIST traceable weights provide confidence that your calibration process meets recognized standards.
25kg Class F Calibration Weights
A 25kg Class F weight is commonly used for calibrating larger scales in industrial, agricultural, logistics, and manufacturing settings. These weights are suitable for verifying scale accuracy without the need for ultra-fine tolerances required in analytical laboratories.
Typical accuracy tolerances range from 0.0001%, making them reliable for routine calibration tasks.
Professional calibration services are available to help maintain accuracy and ensure ongoing compliance.
Features and Benefits
Class F calibration weights offer practical advantages across many industries.
Key Features
- Manufactured to strict tolerance limits
- Durable construction for repeated use
- Optional grip handles for safe handling
- Available with NIST traceable certificates
Benefits
- Ensures accurate scale performance
- Supports regulatory compliance
- Reduces weighing errors
- Improves operational efficiency
These weights are widely used in quality control, logistics, agriculture, and commercial weighing operations.
Certification and Documentation
Each Class F weight undergoes testing by accredited laboratories or qualified manufacturers. After verification, a calibration certificate is issued.
The certificate includes:
- Measured weight value
- Traceability information
- Compliance confirmation
- Date of calibration
Maintaining current certification is essential for audits and quality assurance programs. Certified Class F weights help organizations demonstrate accuracy and reliability in their weighing systems.
Why Choose Class F Calibration Weights?
Class F weights offer a dependable solution for routine calibration of industrial and commercial scales. They provide the right balance of accuracy, durability, and compliance.
By using properly certified calibration weights, businesses can ensure consistent results, meet regulatory expectations, and maintain trust in their measurement systems.
