Mettler Toledo XS4002S Precision Balance – Used & Refurbished
The Mettler Toledo XS4002S Precision Balance is a versatile laboratory balance combining a 4.1 kg maximum capacity with 0.01 g readability, making it well suited for formulation, sample preparation, reagent weighing, quality control, media and buffer preparation, and other routine quantitative laboratory procedures. Part of Mettler Toledo's Excellence XS series, the XS4002S combines proven weighing technology with FACT automatic internal adjustment, a large weighing pan, touchscreen operation, and flexible connectivity.
Available used and refurbished from American Instrument Exchange, the Mettler Toledo XS4002S provides laboratories with dependable precision weighing performance at a significantly lower acquisition cost than comparable new equipment. Each balance is inspected, cleaned, calibrated, and tested for weighing accuracy and repeatability before shipment and includes a 90-day warranty from American Instrument Exchange.
Key Features
-
4.1 kg / 4,100 g maximum weighing capacity
-
10 mg / 0.01 g readability
-
8 mg repeatability
-
20 mg linearity
-
Approximately 1.2-second stabilization time
-
FACT fully automatic internal adjustment
-
Large 170 × 205 mm weighing pan
-
SmartGrid weighing pan helps minimize the effects of air turbulence
-
Backlit graphic display with touchscreen operation
-
Overload protection
-
Built-in RS232 interface
-
Two auxiliary connections for compatible accessories
-
Optional additional interface capability
-
Below-balance weighing capability
-
Multiple built-in weighing applications
-
Used, refurbished, calibrated, and tested by American Instrument Exchange
-
90-day warranty included
Overview
The Mettler Toledo XS4002S is designed for laboratories that need substantially more capacity than a conventional analytical balance while maintaining reliable hundredth-of-a-gram resolution.
Its 4.1 kg capacity and 0.01 g readability make it particularly useful for procedures where samples are weighed directly into beakers, bottles, flasks, containers, or other laboratory vessels. Operators have enough capacity to accommodate both the tare weight of the container and the material being measured without sacrificing the resolution required for routine quantitative work.
The XS4002S also incorporates Mettler Toledo's FACT fully automatic internal adjustment system. FACT monitors conditions that can affect weighing performance and automatically adjusts the balance when necessary, reducing reliance on manually initiated internal adjustments during everyday operation.
Its combination of capacity, resolution, rapid stabilization, and a large weighing surface makes the XS4002S an excellent general-purpose precision balance for laboratories performing frequent formulation and sample-preparation procedures.
Common Applications
The Mettler Toledo XS4002S is well suited for formulation, reagent preparation, media and buffer preparation, sample preparation, component weighing, quality control, percentage weighing, and general laboratory weighing.
Pharmaceutical and biotechnology laboratories can use the balance for weighing ingredients, preparing solutions, measuring reagents, preparing media, and supporting research and quality-control procedures.
Chemical laboratories can use the XS4002S for compound preparation, formulation development, solution preparation, percentage weighing, and other quantitative procedures involving gram-to-kilogram quantities.
Food and beverage, cosmetics, materials science, environmental, manufacturing, and academic laboratories can also use the balance for ingredient weighing, sample preparation, quality testing, research, and routine quantitative work.
The combination of 4.1 kg capacity and 0.01 g readability is especially useful when weighing materials directly into larger containers.
Ideal Laboratory Types
The XS4002S is a strong choice for pharmaceutical, biotechnology, chemical, food and beverage, cosmetics, materials science, environmental, academic, manufacturing, and quality-control laboratories.
It is particularly appropriate for laboratories where analytical-balance resolution is unnecessary but ordinary bench scales do not provide sufficient precision.
The 4.1 kg capacity provides enough headroom for larger vessels and containers, while 10 mg readability supports considerably more precise measurements than typical industrial or general-purpose scales.
This makes the XS4002S useful as a primary laboratory precision balance positioned between high-resolution analytical balances and larger-capacity platform balances.
Precision Weighing Performance
The Mettler Toledo XS4002S provides 10 mg, or 0.01 g, readability across its 4.1 kg weighing range.
Mettler Toledo specifies 8 mg repeatability and 20 mg linearity, providing the level of performance required for routine laboratory quantitative work.
The balance also stabilizes rapidly, with a typical stabilization time of approximately 1.2 seconds. Fast response can make a meaningful difference when technicians perform repetitive weighing procedures throughout the day.
The XS4002S therefore offers a useful combination of capacity, resolution, repeatability, and speed.
Compared with an analytical balance, it allows easier access to the weighing pan and accommodates significantly heavier samples and containers. Compared with a general-purpose laboratory scale, its 0.01 g readability provides considerably greater resolution for formulation and quantitative sample preparation.
Minimum Sample Weight & Quantitative Applications
Selecting a balance based solely on readability can lead to inappropriate weighing procedures. Although the XS4002S displays weight in 0.01 g increments, the smallest displayed increment should not be interpreted as the minimum quantity that can be accurately weighed.
Manufacturer technical data for the XS4002S specifies a minimum weight of approximately 12 g under the stated reference conditions.
Actual minimum weight depends on the individual balance's repeatability, installation environment, measurement uncertainty requirements, and applicable laboratory procedures.
For regulated or validated quantitative work, laboratories should establish minimum weight according to the performance of the installed balance rather than relying exclusively on readability or a published reference value.
This consideration is particularly important when deciding whether the XS4002S is appropriate for a procedure or whether a higher-resolution analytical or semi-micro balance is required.
Controlling Vibration & Environmental Influences
The XS4002S is considerably less sensitive to environmental disturbance than a microbalance or analytical balance, but installation conditions can still influence weighing accuracy and repeatability.
Vibration, strong airflow, rapid temperature changes, unstable benches, and improper leveling can all contribute to inconsistent measurements.
The balance should therefore be installed on a rigid, level work surface away from significant sources of vibration such as centrifuges, shakers, pumps, compressors, and frequently operated equipment.
Strong airflow from HVAC vents or frequently opened doors should also be avoided when possible.
The XS4002S uses Mettler Toledo's SmartGrid weighing pan design, which helps reduce the influence of air turbulence while maintaining convenient access for samples and containers.
Because 0.01 g readability does not require the same degree of environmental isolation as microgram-level weighing, the XS4002S can generally be incorporated into routine laboratory workspaces without the specialized installation requirements associated with ultra-high-resolution balances.
Calibration & FACT Internal Adjustment
The XS4002S incorporates Mettler Toledo's FACT fully automatic internal adjustment technology.
Temperature changes can affect the performance of precision weighing systems. FACT automatically initiates internal adjustment when appropriate, helping maintain consistent weighing performance without requiring the operator to repeatedly perform manual adjustment using external weights.
This is particularly useful in busy laboratories where multiple users rely on the same balance throughout the workday.
Automatic internal adjustment should still be considered one component of a complete balance quality-control program. Laboratories operating under GLP, GMP, USP, or internal quality systems may require scheduled external performance verification using appropriate traceable calibration weights.
American Instrument Exchange calibrates and evaluates refurbished XS4002S balances before shipment to confirm reliable weighing performance.
SmartGrid & Efficient Sample Handling
The XS4002S incorporates Mettler Toledo's SmartGrid weighing pan, designed to help reduce the effects of air turbulence around the weighing surface.
The pan provides ample room for beakers, bottles, flasks, weighing vessels, and other laboratory containers while maintaining easy access from the front and sides.
With a weighing surface measuring approximately 170 × 205 mm, the XS4002S is considerably easier to use with larger vessels than a conventional analytical balance with an enclosed weighing chamber.
This can be particularly useful during formulation, media preparation, buffer preparation, and other procedures where ingredients are weighed directly into the container that will subsequently be used for mixing or processing.
Reducing unnecessary transfers between weighing vessels can simplify workflows and help minimize material loss.
Built-In Applications & Connectivity
The Mettler Toledo XS4002S supports a variety of weighing functions beyond basic mass determination.
Built-in applications include formula weighing, dynamic weighing, percentage weighing, factor calculations, and other routine weighing procedures, allowing the balance to support a variety of laboratory workflows.
The balance also provides an integrated RS232 interface and two auxiliary connections. An additional interface can be installed depending on configuration, providing flexibility for integration with compatible computers, printers, barcode readers, and other laboratory peripherals.
Electronic transfer of results can reduce manual transcription and make it easier to incorporate weighing data into standardized laboratory procedures.
Key Specifications
| Specification |
Mettler Toledo XS4002S |
| Balance Type |
Precision Balance |
| Maximum Capacity |
4.1 kg / 4,100 g |
| Readability |
10 mg / 0.01 g |
| Repeatability |
8 mg |
| Linearity |
20 mg |
| Reference Minimum Weight |
Approx. 12 g |
| Stabilization Time |
Approx. 1.2 seconds |
| Adjustment |
Internal / automatic FACT |
| Weighing Pan |
170 × 205 mm |
| Weighing Pan Technology |
SmartGrid |
| Display |
Backlit graphic touchscreen display |
| Overall Dimensions |
Approx. 194 mm W × 366 mm D × 96 mm H |
| Connectivity |
RS232 plus auxiliary connections |
| Below-Balance Weighing |
Yes |
| Overload Protection |
Yes |
Choosing Between a Precision Balance and Analytical Balance
The XS4002S and a conventional analytical balance are designed for different weighing priorities.
An analytical balance commonly provides 0.1 mg readability, making it appropriate for small samples, standards preparation, gravimetric analysis, and other procedures requiring high measurement resolution. These balances generally have lower maximum capacities and use enclosed draft shields to protect sensitive measurements.
The XS4002S instead provides 4.1 kg capacity with 0.01 g readability.
This makes it considerably better suited for larger samples, containers, formulations, media, buffers, reagents, and routine laboratory preparation procedures.
For example, a laboratory weighing ingredients directly into a one-liter beaker or reagent bottle may find the XS4002S substantially easier to use than an analytical balance. Its larger weighing pan and greater capacity provide room for the container while still delivering 10 mg resolution.
Many laboratories benefit from maintaining both types of instruments: an analytical or semi-micro balance for small high-resolution measurements and a precision balance such as the XS4002S for routine preparation and larger samples.
XS4002S vs. Higher-Capacity Precision Balances
The XS4002S is particularly well suited for laboratories that want 0.01 g readability but do not require extremely high capacity.
Its 4.1 kg range provides significantly more capacity than most analytical balances while retaining finer resolution than many high-capacity precision balances.
For procedures routinely involving samples or vessels above 4 kg, a higher-capacity balance such as a 6 kg, 10 kg, or 32 kg Mettler Toledo precision balance may be more appropriate.
The tradeoff is typically resolution. As capacity increases, many larger balances move from 0.01 g to 0.1 g or greater readability.
The XS4002S therefore occupies a useful middle ground for laboratories that need kilogram-scale capacity without giving up hundredth-of-a-gram resolution.
Refurbishment & Performance Testing
Every used Mettler Toledo XS4002S sold by American Instrument Exchange is inspected, cleaned, refurbished as necessary, calibrated, and tested before shipment.
Our technicians use appropriate calibration weights to evaluate critical performance characteristics including accuracy, repeatability, linearity, corner-load tolerances, stability, and reduced span at or near full capacity.
The FACT automatic internal adjustment system, weighing cell, display, touchscreen controls, SmartGrid pan, leveling components, interfaces, and other installed features are also inspected and tested for proper operation.
The balance is thoroughly cleaned and receives a final operational inspection before shipment.
Each refurbished XS4002S includes a 90-day warranty from American Instrument Exchange.
Shipping & Installation Considerations
Precision balances should be carefully handled during transportation to protect the weighing system and associated electronics.
American Instrument Exchange securely prepares the XS4002S for shipment and protects the weighing pan, display, weighing mechanism, and other components during transportation.
Once received, the balance should be installed on a rigid, level, vibration-resistant work surface away from strong airflow and significant sources of mechanical vibration.
Allowing the balance to acclimate to the laboratory environment before final adjustment and critical weighing can improve measurement consistency.
For laboratories operating under regulated quality systems, installation should be followed by appropriate calibration, verification, or qualification according to internal procedures.
Related Laboratory Equipment
American Instrument Exchange maintains an extensive inventory of used and refurbished laboratory balances, including analytical balances, semi-micro balances, microbalances, and precision balances for applications ranging from routine sample preparation to high-resolution quantitative analysis.
Labs developing complete analytical or sample-preparation workflows can also source centrifuges, water baths, incubators, laboratory refrigerators, laboratory freezers, and other refurbished laboratory equipment from American Instrument Exchange.
Mettler Toledo XS4002S Precision Balance FAQs
What is the maximum capacity of the Mettler Toledo XS4002S?
The XS4002S has a maximum weighing capacity of 4.1 kg, or 4,100 g, making it suitable for samples, reagents, containers, and laboratory formulations weighing several kilograms.
What is the readability of the XS4002S?
The XS4002S provides 10 mg, or 0.01 g, readability across its weighing range.
What is the repeatability of the XS4002S?
Mettler Toledo specifies 8 mg repeatability for the XS4002S under appropriate operating conditions.
How fast does the XS4002S stabilize?
The XS4002S has an approximately 1.2-second stabilization time, allowing efficient repetitive weighing during routine laboratory procedures.
Does the XS4002S have automatic internal calibration?
Yes. The XS4002S incorporates FACT fully automatic internal adjustment, which helps maintain weighing performance as temperature conditions change.
What size is the weighing pan?
The XS4002S has a 170 × 205 mm weighing pan, providing sufficient space for many beakers, bottles, flasks, containers, and other laboratory vessels.
Is the XS4002S suitable for buffer and media preparation?
Yes. Its combination of 4.1 kg capacity, 0.01 g readability, and a large accessible weighing pan makes the XS4002S particularly useful for buffer, media, reagent, and solution preparation.
Is the XS4002S an analytical balance?
No. The XS4002S is a precision balance. Its 0.01 g readability is appropriate for routine laboratory preparation and quantitative weighing, while analytical balances typically provide much finer 0.1 mg or better readability.
Can the XS4002S connect to a computer or printer?
Yes. The balance includes an RS232 interface and auxiliary connections, with additional interface options available depending on configuration. This allows integration with compatible computers, printers, and laboratory peripherals.
Why purchase a refurbished Mettler Toledo XS4002S?
A refurbished XS4002S provides laboratories with 4.1 kg capacity, 0.01 g readability, FACT automatic internal adjustment, SmartGrid weighing technology, and versatile laboratory applications without the acquisition cost associated with comparable new equipment. American Instrument Exchange tests, calibrates, cleans, and refurbishes each balance before shipment and provides a 90-day warranty.
