In laboratory environments where precision is paramount, even minor inaccuracies in weighing can lead to significant errors in research outcomes. Modern analytical balances, such as the Sartorius Entris® II BCE and BCA series, are engineered to address and minimise these potential errors, ensuring reliable and accurate measurements.

Understanding Sources of Weighing Errors

Accurate weighing can be compromised by various factors:

• Environmental Conditions: Temperature fluctuations, air currents, and vibrations can affect balance performance.
• Electrostatic Charges: Charged samples or containers can lead to unstable readings.
• Improper Levelling: An unlevelled balance can cause systematic errors.
• Calibration Drift: Over time, balances may drift from their calibrated state, leading to inaccuracies.

Addressing these challenges requires advanced features and thoughtful design, both of which are integral to the Sartorius Entris® II series.

Sartorius Entris® II: Precision Engineered

The Entris® II series is divided into two lines:

• Entris® II BCE (Essential Line): Designed for fundamental weighing tasks, offering essential features at an accessible price point.
• Entris® II BCA (Advanced Line): Incorporates additional functionalities for more demanding applications, enhancing accuracy and compliance.

Both lines share core technologies that contribute to precise measurements:

• Monolithic Weigh Cell Technology: Provides high-resolution and repeatable results, ensuring long-term stability.
• isoCAL (Internal Calibration & Adjustment): Automatically calibrates the balance based on time or temperature changes, maintaining accuracy without manual intervention.
• Chemical-Resistant Construction: Utilises durable materials like PBT, stainless steel, and specially coated glass to withstand harsh laboratory conditions and facilitate easy cleaning.
• Effective Draft Shield: Minimises the impact of air currents and electrostatic charges, stabilising the weighing environment.

Distinguishing Features: BCE vs. BCA

While both lines offer precision weighing, the BCA series includes advanced features tailored for complex laboratory needs:

• Graphic Touch Display: The BCA's intuitive interface enhances user interaction, reducing the likelihood of operational errors.
• Real-Time Level Support: An internal electronic level sensor in the BCA series continuously monitors balance levelling, providing alerts and guidance to maintain optimal positioning.
• CalAuditTrail: Exclusive to the BCA line, this feature automatically documents calibration and levelling activities with timestamps, supporting compliance with GLP/GMP standards.
• Integrated Protection Systems: The BCA balances offer configurable settings to ensure only valid data is recorded and transferred, safeguarding data integrity.

Built-In Applications for Diverse Laboratory Tasks

The Entris® II balances come equipped with a suite of applications to streamline various laboratory procedures:

• Weighing and Dosing
• Counting and Percentage Weighing
• Mixing and Totalising
• Density Determination
• Animal Weighing
• Statistics and Peak Hold
• Check Weighing and Mass Unit Conversion
• Underfloor Weighing for Large Samples

The BCA series includes an additional application, the Pipette Smart Test, facilitating routine pipette calibration checks.

Connectivity and Data Management

Efficient data handling is crucial in modern laboratories. The Entris® II series supports:

• Plug & Play Connectivity: Automatic recognition of Sartorius accessories like printers and secondary displays.
• Direct PC Integration: Seamless data transfer to software applications such as Microsoft Excel or Word.
• Multiple Interfaces: Equipped with USB Type-C and RS232 ports, ensuring compatibility with various devices and systems.
• User Management: Password-protected access in the BCA series enhances security and prevents unauthorised changes to settings.

Selecting the Right Balance for Your Laboratory

Choosing between the BCE and BCA models depends on your laboratory's specific requirements:

• BCE (Essential Line): Ideal for routine weighing tasks where budget considerations are paramount, yet accuracy cannot be compromised.
• BCA (Advanced Line): Suited for laboratories requiring enhanced features for compliance, data integrity, and complex applications.

Both lines offer a range of models with capacities from 60 g to 12,200 g and readability from 0.1 mg to 1 g, accommodating various analytical needs.

Investing in a Sartorius Entris® II analytical balance ensures that your laboratory benefits from cutting-edge technology designed to minimise errors and enhance productivity. Whether you opt for the BCE or BCA series, you are equipped with a reliable instrument that upholds the highest standards of precision and quality.

Discover the full range from Sartorius HERE.