Vacuum Mass Comparators - The Reference in Mass Determination

Advantages of Vacuum Mass Comparator

Weight Measurements with the Lowest Possible Uncertainty

Weight Measurements with the Lowest Possible Uncertainty

Vacuum mass comparators achieve the highest level of accuracy by performing mass determination at constant pressure or in a vacuum. Our M_one and M_10 vacuum comparators accommodate various shaped artefacts and deliver accurate results within 100 nanograms.

The Reference in Mass Determination

The Reference in Mass Determination

METTLER TOLEDO’s M_one vacuum mass comparator sets the benchmark in ultra-high precision weighing. Masses can be determined with an accuracy of 100 nanograms, a proven typical repeatability of 300 nanograms and a result data comparison of 10 nanograms.

Storage Device Ensures Stability

Storage Device Ensures Stability

The unique Artefact Storage and Transport Vessel (ASTV) keeps objects in the stable conditions of a vacuum or inert gas while also preventing them from being contaminated.

Contamination-Free Artefact Transfer

Contamination-Free Artefact Transfer

To maintain the controlled environment inside the M_one, artefacts are transferred directly from their ASTV to the weighing chamber via the Load Lock, which incorporates an Artefact Transfer Device (ATD).

Accommodates Different Shaped Artefacts

Accommodates Different Shaped Artefacts

Thanks to the unique STAR-shaped weighing pan, the M_one accommodates multiple weights and artefacts from 1 mg up to 1 kg. Silicon spheres up to 100 mm in diameter and density artefacts can be placed directly on the weighing pan.

Direct Access for Easy Loading

Direct Access for Easy Loading

The large quick-loading door provides direct access to the weight handler inside the weighing chamber for fast and ergonomic loading of weights and artefacts.

Modular Design

Modular Design

The M_one, Load Lock, Artefact Transfer Device, and the vacuum pumping systems have been built on a modular basis. This gives you the flexibility to configure your own initial system and expand it according to the demands of your applications and as budget permits.

Automated Gravimetric Centering (AGC) of Weights

Automated Gravimetric Centering (AGC) of Weights

The AGC positions all types of artefacts precisely in their gravimetric center before the measurement is taken. This reduces eccentricity error to a minimum and ensures the highest possible measurement repeatability.

M_Control Software and Optional Efficiency Pack

M_Control Software and Optional Efficiency Pack

The M_Control software gives you complete control over your vacuum mass calibration processes. With the optional Efficiency Pack, post-processing of air buoyancy provides an increased level of measurement accuracy.

What is a vacuum mass comparator?

vacuum mass comparator
vacuum mass comparator

A vacuum mass comparator is the most accurate balance possible. It weights the mass of an artefact in a vacuum, which means that no air buoyancy correction is needed. Without this correction, a relevant part of the uncertainty calculation can be removed, which means that the overall uncertainty is improved. 

Metrological Traceability

How to Establish and Maintain Metrological Traceability

Comprehensive Guidance on Metrological Traceability

Influences on Mass Calibration ꟷ Minimizing Uncertainties

Influences on Mass Calibration ꟷ Minimizing Uncertainties

Enhance Weighing Accuracy by Assessing and Mitigating Sources of Influence

Efficient Mass Calibration Software

Efficient Mass Calibration Software

Delivering Secure Traceable Data

Testing Mass Comparator

How Are Mass Comparators Tested and Certified?

Certification of High Accuracy Weighing Instruments

Calibration with Robotic Mass Comparators

Calibration with Robotic Mass Comparators

Maximizes Security and Delivers the Highest Accuracy in Mass Calibration