KERN ACJ Analytical Balances

Single-Cell Technology for Fast, Precise Laboratory Weighing

Professional analytical balances with advanced Single-Cell technology

KERN ACJ analytical balances are designed for laboratories that require outstanding weighing accuracy, fast measurement times and long-term reliability. Combining advanced Single-Cell weighing technology, electromagnetic force compensation and automatic internal calibration, the ACJ series delivers professional analytical weighing for research laboratories, pharmaceutical companies, universities and quality control departments.

Designed for demanding laboratory environments, the ACJ range offers an excellent balance between innovative weighing technology, operational efficiency and long-term value.

Why choose a KERN ACJ analytical balance?

Modern laboratories require more than accurate weighing. Analytical balances must also support efficient workflows, minimise operator influence and provide consistent measurement quality throughout years of daily operation.

The KERN ACJ series offers numerous advantages, including:

Advanced Single-Cell technology
Automatic internal calibration
Electromagnetic force compensation
Fast stabilisation times
Excellent repeatability
GLP-compliant data output
USB and RS-232 connectivity
High-quality glass draft shield
Robust laboratory construction

These features make the ACJ series an ideal solution for laboratories seeking premium weighing technology without the complexity of high-end compliance platforms.

Single-Cell technology – Precision engineered from a single aluminium block

The defining feature of every KERN ACJ analytical balance is its advanced Single-Cell weighing cell.

Unlike conventional weighing systems assembled from multiple mechanical components, the complete weighing cell is machined from a single solid aluminium block.

This monolithic construction significantly reduces mechanical tolerances, material stresses and assembly-related inaccuracies. The result is an exceptionally rigid weighing system capable of delivering outstanding measurement quality throughout its service life.

For laboratory users, this translates into several important benefits:

Outstanding weighing accuracy
Exceptional repeatability
Very fast stabilisation
Excellent long-term stability
Reduced sensitivity to temperature fluctuations
Lower mechanical wear
Consistently reliable measurement performance

Because the weighing system reacts extremely quickly to changes in load, stable measurement results become available within only a few seconds. Laboratories processing large numbers of samples benefit from faster workflows and improved productivity without compromising measurement quality.

Single-Cell technology represents one of the most advanced weighing solutions available for professional analytical balances, combining precision engineering with exceptional mechanical stability.

Electromagnetic force compensation – The foundation of analytical weighing

The Single-Cell weighing system operates using electromagnetic force compensation, the measurement principle widely used in professional analytical balances.

Instead of relying on purely mechanical movement, the applied sample weight is balanced electronically by a precisely controlled electromagnetic force. The required compensation force is measured and converted into an extremely accurate weighing result.

This technology provides several advantages:

High measurement resolution
Excellent repeatability
Outstanding long-term accuracy
Fast response times
Stable measurement performance

Combined with the Single-Cell design, electromagnetic force compensation allows the ACJ series to deliver dependable analytical weighing even for very small sample quantities.

Automatic internal calibration

Accurate analytical weighing requires regular calibration.

KERN ACJ analytical balances feature automatic internal calibration, using an integrated calibration weight to verify and adjust weighing accuracy whenever necessary.

Calibration may be initiated automatically:

After temperature changes
At predefined time intervals
According to laboratory operating conditions

Because the calibration weight is permanently integrated into the balance, routine adjustment can be completed without external weights, reducing downtime while maintaining consistent measurement performance.

Automatic calibration also minimises operator influence and helps maintain reliable laboratory processes.

Fast stabilisation for higher laboratory productivity

Analytical weighing is measured not only by accuracy but also by efficiency.

Thanks to the combination of Single-Cell technology and advanced signal processing, KERN ACJ analytical balances provide stable weighing results within just a few seconds.

This enables laboratories to:

Process more samples each day
Reduce waiting times
Improve workflow efficiency
Increase laboratory productivity
Accelerate routine weighing procedures

For quality control laboratories and research facilities performing hundreds of measurements daily, these time savings quickly become significant.

Glass draft shield for stable weighing conditions

Even slight air movement can affect analytical weighing.

To minimise environmental influences, KERN ACJ analytical balances are equipped with a precision glass draft shield.

The enclosed weighing chamber protects samples against:

Air drafts
Ventilation systems
Air turbulence
External disturbances

Sliding glass doors provide convenient access while maintaining stable weighing conditions throughout the measurement process.

GLP-compliant laboratory documentation

Reliable documentation is an essential part of modern laboratory quality management.

The KERN ACJ series supports GLP-compliant data output, making weighing results easier to document and trace.

Depending on laboratory procedures, documentation may include:

Weighing result
Date and time
Instrument identification
Calibration status

This improves traceability while simplifying internal quality assurance procedures.

Digital connectivity for modern laboratories

Today's laboratories increasingly rely on electronic data management.

Depending on the model configuration, KERN ACJ analytical balances support communication via:

RS-232
USB

These interfaces enable direct data transfer to:

Laboratory computers
Laboratory software
Printers
Documentation systems

Electronic data transfer reduces transcription errors and improves process reliability.

Easy operation for everyday laboratory work

Despite its advanced weighing technology, the ACJ series is designed for intuitive operation.

The clear display and logical menu structure provide fast access to common weighing applications.

Depending on the model, available functions include:

Standard weighing
Taring
Parts counting
Percentage weighing
Formulation
Multiple weighing units
Data output

This versatility allows a single balance to support a wide range of laboratory applications.

Built for continuous professional use

KERN ACJ analytical balances are designed for long-term operation in demanding laboratory environments.

Their robust construction includes:

Precision Single-Cell weighing system
Glass draft shield
Adjustable levelling feet
Integrated spirit level
Durable laboratory construction

These features ensure reliable performance and consistent weighing accuracy over many years of professional use.

Typical laboratory applications

KERN ACJ analytical balances are widely used in:

Chemical laboratories

Accurate weighing of chemicals and reagents.

Pharmaceutical laboratories

Sample preparation, formulation and quality control.

Research laboratories

Scientific experiments and analytical research.

Universities

Teaching laboratories and research projects.

Quality control laboratories

Inspection of raw materials, intermediate products and finished goods.

Food and environmental laboratories

Precise analytical weighing for laboratory testing.

Choosing the right KERN ACJ analytical balance

When selecting the appropriate ACJ model, laboratories should consider:

Maximum weighing capacity
Required readability
Sample characteristics
Documentation requirements
Communication interfaces
Future laboratory needs

Selecting the right analytical balance ensures efficient workflows while supporting long-term laboratory requirements.

Why choose a KERN ACJ analytical balance?

The KERN ACJ series combines advanced Single-Cell technology, electromagnetic force compensation and automatic internal calibration in a robust analytical balance designed for professional laboratories.

Its precision-engineered weighing cell, machined from a single aluminium block, delivers exceptional measurement quality, rapid stabilisation and outstanding long-term reliability. Together with GLP-compliant documentation, modern connectivity and intuitive operation, the ACJ series provides an excellent solution for laboratories seeking advanced weighing performance and outstanding value.

Frequently Asked Questions

What makes the KERN ACJ series different from other analytical balances?

Its advanced Single-Cell weighing cell, machined from a single aluminium block, provides exceptional measurement quality, fast stabilisation and excellent long-term stability.

What are the advantages of automatic internal calibration?

Automatic internal calibration maintains weighing accuracy while reducing routine maintenance and eliminating the need for external calibration weights during everyday operation.

What is electromagnetic force compensation?

It is a highly accurate weighing principle that electronically balances the applied load, ensuring precise, repeatable and stable measurement results.