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Customizable Modularity in Lab Balances

Meets your Specific Weighing Needs

| Author / Editor: Lori M. King* / Marc Platthaus

Climate and environment monitoring

An interface unit can be chosen for the Cubis II balance that actively monitors temperature, atmospheric pressure, and humidity with climate sensors and alerts users to the potential for these variables to affect their weighing results.

Balance draft shields are designed to protect substances being weighed from the effects of drafts and static electricity. Drafts and moving air will be detected by highly precise balances. Even updrafts from warming and downdrafts from cooling weighing vessels may cause errors in weighing measurements. The mechanical force exerted by static electricity is also detectable with analytical balances with an increasing influence on micro- and ultramicro balances, and is the cause of instability in weighing measurements.

Static can build up on weighing vessels (glass and plastic tend to promote static), the user operating the balance (for instance, by scuffing the soles of shoes on carpets), the substance being weighed (often by friction in powders in low humidity conditions), and even the surface on which the balance is placed.

Static elimination accessories, such as external air ionizers, can be purchased to dissipate static charges in the air around the balance. However, the innovative draft shield technology of the Cubis II balance not only protects from drafts, but has an optional accessory to eliminate static effects. This draft shield is an automatic glass draft shield that may be operated by gesture sensors, allowing the user to open the draft shield and print with specific movements of the hand over the infrared sensor, and including an integrated ionizer to eliminate static charges on samples and sample containers. The Cubis II draft shields have a conductive coating for extra protection against electrostatic build-up, particularly that which derives from users.

Automatic, motorized levelling for faster accuracy

One of the factors affecting accurate results is correct levelling of the balance. Modern balances work by electromagnetic force compensation. An unknown’s mass is calculated from the linear force applied by that unknown against the adjustable and known linear force applied by an electromagnet at a specific spatial position. Because the specific spatial location must be precisely known, balances must be precisely levelled, and even being slightly off-level can introduce systematic error. Balances generally have a level indicator and ways to correct the level through adjustable feet.

However, changing the position on a balance table, for instance, for cleaning or by swaying of the entire floor on upper stories can throw a balance off true-level, and achieving true level can be tedious process. The Cubis II line of balances solves this problem with a quick and easy, motorized, auto-levelling function to simplify the process of preparing the balance for use and keeping it level for the most accurate weighing results.

Conclusion: modularity helps customers

The Cubis II laboratory balance is the only premium, completely configurable, high-performance portfolio of both lab weighing hardware and software.

The balance has a fully customizable hardware, software, and connectivity suite with thousands of different configurations that will align with each lab’s unique demands and compliance requirements to help maximize operational efficiency and experimental outcomes.

* L. M. King Essen BioScience, Inc. (Part of the Sartorius Group), Ann Arbor, Michigan/USA

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