Kern & Sohn – ADS/ADT and PDS/PDT Balances

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With the launch of its new analytical and precision balances in the KERN ADS/ADT and PDS/PDT ranges, KERN & SOHN GmbH introduces a versatile generation of instruments tailored for laboratory, industrial, and research applications. The models combine high measurement accuracy with operational flexibility, modern user interfaces, and connectivity for data-integrated environments.

Measurement Accuracy and Adjustment Options

The balances are designed for precision-critical use cases. The analytical models (ADS/ADT) offer a readability of 0.1 mg, making them suitable for high-resolution laboratory work. The precision models (PDS/PDT) provide readability up to 1 mg, aligning with the requirements of industrial quality control and production.

Adjustment is carried out in two distinct ways depending on the model series:

• ADT (analytical) and PDT (precision) models feature automatic adjustment with an internal weight
• ADS and PDS models require external calibration

This setup provides flexibility across varying environmental conditions and procedural requirements.

Functional Scope

The balances are equipped with core functions that support a broad range of weighing tasks:

• Statistics function: automatically calculates average values and standard deviation
• Tolerance weighing: evaluates whether the result lies within a defined target range
• Piece counting: calculates quantity based on a known reference weight
• Percentage weighing: expresses the sample weight as a percentage of a reference value

These features help streamline routine processes and support efficiency in laboratory and production settings.

Operation and Interface Design
Each balance is fitted with a semi-touch display, combining a touchscreen with classic control buttons. This hybrid approach allows direct access to key operations such as unit switching and adjustment, while maintaining tactile usability in situations where gloves or frequent physical interaction are involved.

Connectivity and Data Transfer

Modern laboratories rely on integrated data management. The new balance ranges include RS-232 and USB (device) interfaces as standard. The Windows-Direct function enables direct data transfer to Windows applications without requiring dedicated software.
Using the KERN Communication Protocol, balances can be integrated into broader laboratory or enterprise environments, including CRM or ERP systems. This allows both control of the balance and automated retrieval of measurement data – suitable for semi-automated workflows.

Compliance and Documentation

All models offer GLP/ISO-compliant logging. Each weighing and adjustment is recorded with date, time, and a unique identification number, ensuring full traceability in accordance with Good Laboratory Practice (GLP). This is particularly relevant for regulated laboratory and production environments where auditability and data integrity are required.

Use Case Flexibility

The design of the ADS/ADT and PDS/PDT balances supports a wide range of applications:

• Analytical models are equipped with a draft shield to reduce environmental influences, enhancing stability and precision
• Precision models are optimised for industrial workflows, such as quality control or production monitoring

By offering varied weighing ranges, readability levels, adjustment methods, and interface options, the new series addresses the operational demands of multiple sectors from a single platform.

Conclusion

The KERN ADS/ADT and PDS/PDT balance ranges represent a practical and technically refined weighing solution. Their combination of measurement accuracy, functional versatility, digital connectivity, and regulatory compliance makes them a valuable tool in laboratory, industrial, and research environments.

The series supports laboratories in working efficiently, accurately, and in a compliant manner – making it a strong candidate for recognition in the Labmate Awards for Excellence 2025.