Outstanding Performance Meets Your Requirements for Weight Calibration
Manual mass comparators combine outstanding performance with intelligent workflow guidance, environmental monitoring and precise load positioning to support reliable and traceable mass determination. From a milligram reference standard to over 2,000 kilograms, our solutions address demanding OIML and ASTM calibration requirements across the mass metrology laboratory.
Monolithic weighing cells and High-resolution strain-test medium type load cells deliver exceptional stability, while optional integrated sensors capture temperature, air pressure and humidity to support air-buoyancy corrections.
Explore Manual Mass Comparators
Comparing Systems
| Cubis® and Cubis® II MC | Cubis® MC | CCS Mass Comparators | CCT Mass Comparators | |
|---|---|---|---|---|
| Max. Capacity ranges | From 6.2 g up to 64 kg | 155 kg or 310 kg | From 605 kg up to 3,010 kg | 1,200 kg or 2,100 kg |
| Weighing Technology | Monolithic Weighing Cell | 4 High-resolution strain-test medium type load cells | 4 High-resolution strain-test medium type load cells | 3 High-resolution strain-test medium type load cells |
| Round Weighing Pan design | Max. Capacities between 6.2 g up to 1.11 kg, and 10.05 kg, and 32 kg | - | - | - |
| Square Weighing Pan design | Max. Capacities between 2.5 kg up to 300 kg | All | All | - |
| Triangle Weighing Pan design | - | - | - | All |
| Environmental Conditions - Triple Sensor | Optional* (Tower or Inner Chamber type, if applicable) | Optional (Tower type) | - | - |
| Mass Comparison workflow QApp | Included | Included | - | - |
*Excluding MCM10K4.1 and MCM32002
Key features
With up to 111 million weighing steps, these instruments are world class. The monolithic weigh cells that are manufactured as a single structure from a high-quality aluminum alloy deliver results with outstanding repeatability.
The integrated workflow control of the manual Cubis® mass comparators minimizes the error rate during operation: During the measurement process, the device gives the user instructions about the step to perform next. This markedly keeps the factor “human” from compounding the accuracy of mass determination and makes the results more reliable. At the same time, the workflow is ergonomically optimized and gives the user a more relaxed working atmosphere.
The sensors integrated in the Cubis® mass comparator automatically log climate data like temperature, air pressure and humidity for calculating the air buoyancy correction at the site of the measurement. The climate data can be documented via a PC. That way, it is possible at any time to check that the limits on temperature, air pressure and humidity of the respective calibration levels (E1, E2, F1 or F2) are in compliance.
Centermatic ensures that the Weight of a mass is always consistently and centrally applied to the built-in EMC cell of the mass comparator. As a result, the position-dependent measuring error of the mass comparator is substantially reduced, and the repeatability of the measurements are significantly enhanced.
Centermatic built-in for MCM10K4.1
Optional centering pan(YWP03C) for MCM40K3, MCM60K3 | MCM60K2
The innovative sturdy three-point frame of the CCT models with three high-resolution strain-test medium type load cells guarantee a stable and distortion-free setup. Potential off-center loading errors are minimized due to the large distances between the weigh cells and a very high repeatability is enabled.
Applications for Manual Mass Comparators
OIML - Reference Standard class manual Calibration from 1 mg to 200 g, 1 kg, and 10 kg
Combining Cubis® and Cubis® II technologies for a minimum of three Mass Comparators for the range from 1 mg to 200 g, and one Mass Comparator for each nominal value of 1 kg and 10 kg (Reference Standard class).
MCM6.7, MCA106MC, MCA206MC, MCA1005MC and MCM10K4.1
ASTM – Class 000 manual Calibration from 0.05 mg to 2 kg, 5 kg and 10 kg
Combining Cubis® and Cubis® II technologies for a minimum of four Mass Comparators for the range from 1 mg to 2 kg, and one Mass Comparator for 5 kg and 10 kg (Class 000).
MCM6.7, MCA206MC, MCA1005MC, MCM2004 and MCM10K4.1
OIML - E1 & E2 class manual Calibration from 1 mg to 50 kg
Combining Cubis® and Cubis® II technologies for a minimum of six Mass Comparators for the range from 1 mg to 50 kg (E1 and E2 class).
MCM6.7, MCA206MC, MCA1005MC, MCM10K4.1, MCM40K3 and MCM60K3
ASTM – Class 00 and 0 manual Calibration from 0.05 mg to 50 kg
Combining Cubis® and Cubis® II technologies for a minimum of seven Mass Comparators for the range from 0.05 mg to 50 kg (Class 00 and 0).
MCM6.7, MCA206MC, MCM605MC, MCA2004, MCM10K4.1, MCM40K3 and MCM60K3
OIML - F1 & F2 class manual Calibration from 1 mg to 200 kg
Combining Cubis® and Cubis® II technologies for a minimum of five Mass Comparators for the range from 1 mg to 200 kg (F1 and F2 class).
MCA206MC, MCM5004, MCM60K3, MCM150K2 and MCM300K2
ASTM – Class 1, 2 and 3 manual Calibration from 0.1 mg (Class 1), 0.2 mg (Class 2), 0.3 mg (Class 3) to 50 kg, and Class 2 and 3 from 100 kg to 300 kg
Combining Cubis® and Cubis® II technologies for a minimum of six Mass Comparators for the range from 0.1 mg to 300 kg (Class 1, 2 and 3).
MCM106MC, MCM1004, MCM10K3, MCM60K2, MCM150K2 and MCM300K2
OIML - M1 class manual Calibration starting from 1 mg, M2 class from 100 mg, M3 class from 1 g, and all up to 2,000 kg
Combining Cubis® and Cubis® II technologies for a minimum of five Mass Comparators for the range from 1 mg to 2,000 kg (M1 and M2 and M3 class).
MCA1005MC, MCM60K2, MCM300K2, CCT1000K, and CCT2000K or CCS3000K
ASTM – Class 4, 5, 6 and 7 manual Calibration from 0.5 mg (Class 4, 5 and 6) and 10 mg (Class 7) to 300 kg, and Class 5, 6 and 7 from 500 kg to 3,000 kg
Combining Cubis® and Cubis® II technologies for a minimum of six Mass Comparators for the range from 0.5 mg to 3,000 kg (Class 4, 5, 6 and 7).
MCM206MC, MCA5003, MCM60K2, MCM300K2, CCT1000K, and CCS3000K
Gas Standards – Preparation & Filling
Gravimetric Preparation of Gas Standards (Primary or Secondary Standards)
Preparing calibration gas mixtures by weighing the cylinder before and after adding each component. This is the reference method in many gas standards labs (ISO 6142 type approach).
Gravimetric preparation is the most accurate way to make gas mixtures; it relies entirely on accurate mass measurement.
Requires high‑capacity, high‑resolution instruments (often 5-30–150 kg capacity with 0.001-0.1–1 g readability or better).
Filling & Blending of Industrial and Medical Gases (Including Oxygen)
Filling cylinders with pure gases or blends (e.g., medical oxygen, nitrous oxide mixes, welding gases, shielding gases).
Provides traceable control of gas content, independent of cylinder pressure indications.
Often used for final QC and fill verification.
Weight Artefacts and Non-Normalized Objects
Mass comparators and ultra-high-precision balances are particularly valuable when measuring:
Complex geometries
Non-standard shapes
High-value components
Objects requiring uncertainties in the microgram or milligram range
Components affected by air buoyancy, temperature, surface adsorption, or handling effects
These applications demonstrate how modern Mass Comparators have evolved from instruments used exclusively for Weight Calibration into precision measurement systems supporting aerospace, automotive, medical, electronics, energy, additive manufacturing, and advanced industrial production.
Mass Metrology Resources
Services for Mass Comparators
Keep your mass comparators at peak performance throughout their entire lifecycle with services carried out by engineers who work directly with the original design data, firmware, and parts.
- Installation and setup - On-site installation, leveling and initial startup - for reliable results from day one
- Maintenance & contracts - Preventive maintenance and service contracts at defined intervals to stay within specification, year after year
- Repair and spare parts - Manufacturer-backed repair with original Sartorius spare parts and verified performance
Frequently Asked Questions
The operator manually places and removes the weights on the weighing pan. The instrument then provides the precise weighing result or difference between the compared masses. This differs from an automatic or robotic mass comparator, which handles weight exchange automatically.
Stable environmental conditions are essential. Temperature changes, air drafts, humidity fluctuations, vibration, atmospheric pressure, and static electricity can influence the result. Sartorius solutions may include environmental monitoring for temperature, humidity, and atmospheric pressure.
Yes, the with the mass calibration QAPP ABA and ABBA measurement sequences can be performed with Sartorius manual mass comparators
ABA: Reference weight A → test weight B → reference weight A
ABBA: Reference weight A → test weight B → test weight B → reference weight A
The mass calibration QApp installed ar Sartorius manual mass comparators provide software-supported workflows for configuring and guiding cyclic measurements, including ABA and ABBA sequences. The operator is guided by the software application through the process and manually exchanges the weights, waits for stable readings, and records the results according to the laboratory procedure.
Check the environment and instrument setup before assuming that the comparator is defective. Check the instrument for correct assembly (weighing pan is empty and correctly installed. Confirm that the draft shield is closed, the instrument is level, and no foreign material is touching the pan) and environmental factors such as:
- Air drafts
- Vibration
- Temperature changes
- Static electricity
- Unstable installation
- Contaminated or incorrectly positioned weights
- Insufficient stabilization time
- Electromagnetic interference
Mass Calibration is a Sartorius application for Cubis manual mass comparators designed to support mass calibration workflows. It can help guide the user through the calibration process and reduce manual data-entry or procedural errors.