Mettler Toledo XS603S
Shipping
All products ship from our 30,000 sq. ft. Haverhill, MA warehouse
Shipping
All products ship from our 30,000 sq. ft. Haverhill, MA warehouse
The Mettler Toledo XS603S Excellence Precision Balance with Draft Shield combines 610 g maximum capacity with 1 mg / 0.001 g readability, providing high-resolution weighing performance for laboratories that need more capacity than a typical analytical balance while maintaining milligram-level resolution. Equipped with a fully enclosed draft shield, the XS603S is particularly well suited for applications where air movement could interfere with precise measurements.
Available used and refurbished from American Instrument Exchange, the Mettler Toledo XS603S features MonoBloc weighing technology, FACT automatic internal adjustment, a touchscreen interface, an enclosed weighing chamber, overload protection, electronic connectivity, and integrated weighing applications.
The XS603S is a single-range precision balance, providing consistent 1 mg readability throughout its entire 610 g weighing range. Its combination of high resolution, useful capacity, environmental protection, and advanced Excellence-series functionality makes it an excellent choice for pharmaceutical, biotechnology, chemical, research, quality-control, and formulation laboratories.
Each XS603S is inspected, cleaned, calibrated, and tested for weighing performance before shipment and includes a 90-day warranty from American Instrument Exchange.
610 g maximum weighing capacity
1 mg / 0.001 g readability
Single-range precision weighing
Repeatability limit of 0.9 mg
Typical repeatability of approximately 0.5 mg
Linearity deviation limit of 2 mg
Typical linearity deviation of approximately 0.7 mg
Typical USP minimum sample weight of approximately 1.5 g
Approximately 1.5-second settling time
Fully enclosed draft shield
Approximately 175 mm usable draft-shield height
MonoBloc high-speed weighing technology
FACT automatic internal adjustment
Touchscreen operation
Robust metal housing
Integrated overload protection
Built-in weighing applications
RS232 interface and expandable connectivity
Below-balance weighing capability
Used, refurbished, calibrated, and tested by American Instrument Exchange
90-day warranty included
The Mettler Toledo XS603S occupies a useful position between conventional precision balances and analytical balances.
A typical general-purpose precision balance may provide 0.01 g or 0.1 g readability. The XS603S provides substantially finer 0.001 g / 1 mg readability, allowing laboratories to reliably observe much smaller changes in sample mass.
At the same time, its 610 g capacity provides considerably more working room than many traditional analytical balances.
This combination is particularly valuable when the total weight of the sample and its container exceeds the capacity of a conventional analytical balance but the procedure still requires milligram-level resolution.
The XS603S adds another important advantage: an enclosed draft shield.
Although 1 mg precision balances are less environmentally sensitive than 0.1 mg analytical or 0.01 mg semi-microbalances, air movement can still affect measurements. The draft shield helps isolate the weighing pan from HVAC airflow, nearby movement, and other disturbances within an active laboratory.
The Mettler Toledo XS603S is well suited for sample preparation, reagent weighing, formulation, standards preparation, chemical preparation, quality control, pharmaceutical research, ingredient weighing, density determination, differential weighing, percentage weighing, filter weighing, and other quantitative laboratory procedures.
Pharmaceutical and biotechnology laboratories can use the XS603S for formulation ingredients, reagents, research samples, media components, and quality-control measurements.
Chemical laboratories can use the balance for compound preparation, solution preparation, research, and routine quantitative weighing.
Food and beverage, cosmetics, environmental, materials science, academic, and industrial laboratories can also benefit from the XS603S when 1 mg resolution is required and protection from laboratory air movement is desirable.
The XS603S is a strong choice for pharmaceutical, biotechnology, chemical, environmental, food and beverage, cosmetics, materials science, academic, industrial research, and quality-control laboratories.
It is especially useful for laboratories that routinely weigh samples in the tens or hundreds of grams but still require milligram-level resolution.
The 610 g capacity also provides useful headroom for containers, vessels, bottles, sample holders, and other tare items.
Because the XS603S includes a draft shield, it can be particularly attractive in active laboratory environments where HVAC systems, nearby movement, or frequently opened doors make open-pan milligram weighing less stable.
The Mettler Toledo XS603S provides 1 mg / 0.001 g readability throughout its full 610 g capacity.
Mettler Toledo specifies a 0.9 mg repeatability limit at nominal load, with typical repeatability of approximately 0.5 mg under reference conditions.
The manufacturer specifies a 2 mg linearity deviation limit, with typical linearity deviation of approximately 0.7 mg.
Settling time is approximately 1.5 seconds, allowing the XS603S to combine relatively high resolution with efficient repetitive weighing.
Unlike a DeltaRange balance, the XS603S does not change readability at different portions of its weighing range. The same 1 mg resolution is available from low loads through the full 610 g capacity.
Mettler Toledo specifies a typical USP minimum sample weight of approximately 1.5 g for the XS603S under reference conditions.
This figure illustrates an important distinction between readability and minimum sample weight.
Although the XS603S displays mass in 1 mg increments, a 1 mg sample is not necessarily large enough to be weighed quantitatively within a specified relative uncertainty.
Minimum weight depends primarily on repeatability and the measurement uncertainty permitted by the laboratory's procedure.
For USP, GMP, GLP, or other controlled applications, laboratories should determine minimum sample weight using the actual repeatability of the installed XS603S under its operating conditions.
Calibration condition, vibration, air movement, temperature stability, weighing technique, and sample characteristics can all influence actual performance.
The draft shield is one of the most useful features of this particular XS603S configuration.
Mettler Toledo specifies approximately 175 mm of usable draft-shield height, providing enough room for a variety of sample containers, weighing vessels, bottles, filters, and other laboratory items.
The enclosure helps isolate the weighing pan from air movement produced by HVAC systems, open doors, nearby personnel, and normal laboratory activity.
This can improve stabilization and repeatability compared with performing the same measurement on an exposed weighing pan.
The draft shield does not eliminate the need for appropriate balance placement. The XS603S should still be positioned away from strong HVAC outlets, open windows, frequently used doors, and other significant airflow sources.
At 1 mg readability, vibration and electrostatic charge can also influence weighing results.
The XS603S should be installed on a rigid, stable, level laboratory work surface away from significant vibration sources such as centrifuges, shakers, pumps, compressors, refrigerators, and freezers.
Static electricity can become relevant when weighing powders, filters, plastic containers, films, and other materials prone to accumulating charge.
Low laboratory humidity can increase static problems.
When necessary, appropriate antistatic equipment, conductive sample containers, grounding techniques, or humidity control can help reduce these effects.
The enclosed draft shield can control airflow, but it cannot compensate for an unstable bench or a highly charged sample.
The XS603S incorporates Mettler Toledo's FACT automatic internal adjustment system.
FACT allows the balance to perform automatic temperature-controlled adjustment using an internal reference weight.
This helps maintain weighing performance as laboratory conditions change without requiring the operator to manually place an external calibration weight on the pan every time routine adjustment is necessary.
For a high-resolution precision balance, internal adjustment can be particularly useful in laboratories where the instrument is used throughout the day or room temperature varies.
FACT does not eliminate the need for independent verification.
Laboratories operating under USP, GMP, GLP, ISO, or internal quality systems may still require scheduled testing with appropriate traceable external reference weights.
American Instrument Exchange verifies operation of the FACT system and externally evaluates weighing performance during refurbishment.
Many 1 mg precision balances use an open weighing pan or a relatively small draft ring.
The XS603S's full draft shield provides additional environmental protection.
This can be useful when weighing powders, filters, lightweight containers, or other samples that are particularly susceptible to air movement.
A draft shield can also make it easier to achieve stable results in laboratories where environmental conditions are less than ideal.
An open-pan balance may provide faster access when repeatedly weighing larger or less sensitive samples.
The XS603S is particularly attractive when laboratories want 610 g capacity and 1 mg resolution while retaining the environmental protection normally associated with higher-sensitivity balances.
The XS603S incorporates Mettler Toledo's Excellence touchscreen interface, providing access to weighing functions, applications, settings, and balance information.
The interface allows operators to navigate commonly used functions without relying on complicated sequences of physical buttons.
Built-in applications support procedures such as normal weighing, statistics, formulation, density determination, percentage weighing, piece counting, differential weighing, and other routine laboratory workflows.
These functions allow the XS603S to perform more than straightforward mass determination.
For laboratories performing repetitive procedures, integrated applications can reduce manual calculations and help improve workflow consistency.
The XS603S includes an integrated RS232 interface and auxiliary connections, along with support for optional additional interfaces depending on configuration.
This allows the balance to communicate with compatible printers, computers, laboratory peripherals, and data systems.
Electronic transfer of weighing results can reduce manual transcription and the possibility of recording errors.
For quality-control and regulated laboratories, electronic data handling can also support more consistent documentation of weighing procedures.
The Excellence XS platform was designed for routine laboratory use.
The XS603S incorporates a metal housing and built-in overload protection to help protect the weighing system from accidental overloading and the wear associated with frequent operation.
This can be particularly important in multi-user laboratories where the balance may be used for numerous procedures by technicians with different levels of experience.
The combination of a robust housing, protected weighing cell, enclosed draft shield, and stainless steel weighing components makes the XS603S well suited for regular laboratory use.
| Specification | Mettler Toledo XS603S |
|---|---|
| Balance Type | High-Resolution Precision Balance |
| Weighing Architecture | Single Range |
| Maximum Capacity | 610 g |
| Readability | 1 mg / 0.001 g |
| Repeatability Limit | 0.9 mg |
| Typical Repeatability | Approx. 0.5 mg |
| Linearity Deviation Limit | 2 mg |
| Typical Linearity Deviation | Approx. 0.7 mg |
| Typical USP Minimum Weight | Approx. 1.5 g |
| Settling Time | Approx. 1.5 seconds |
| Adjustment | Internal / automatic FACT |
| Weighing Technology | MonoBloc |
| Draft Shield | Included / fully enclosed |
| Usable Draft-Shield Height | Approx. 175 mm |
| Display | Touchscreen graphical terminal |
| Housing | Metal |
| Overload Protection | Yes |
| Standard Interface | RS232 |
| Additional Connectivity | Auxiliary connections / optional interface |
| Below-Balance Weighing | Available |
The XS603S provides 1 mg readability, while a conventional analytical balance typically provides 0.1 mg readability.
An analytical balance therefore offers ten times finer displayed resolution.
That additional sensitivity is important for smaller samples, gravimetric analysis, reference standards, and procedures with tighter uncertainty requirements.
The XS603S offers a different advantage: 610 g capacity combined with milligram-level resolution.
This allows technicians to work with larger samples and heavier tare vessels than many analytical balances can accommodate.
The XS603S is therefore an excellent choice for formulation, reagent preparation, sample preparation, quality control, and other procedures where 1 mg resolution satisfies the analytical requirement.
A 0.1 mg analytical balance becomes preferable when the application specifically requires sub-milligram measurement.
The XS603S should not be confused with the similarly named XS603SDR DeltaRange balance.
The XS603S provides 1 mg readability throughout its entire 610 g capacity.
The XS603SDR uses a different dual-range architecture, providing a higher-resolution fine range and reduced resolution across the remainder of its capacity.
For laboratories that routinely require 1 mg resolution at loads above the DeltaRange fine-range limit, the XS603S's single-range architecture provides a significant advantage.
The similar model names make this an important distinction when comparing used Mettler Toledo balances.
The XS603S and XS403S share the same general S-platform architecture and both provide 1 mg readability.
Their primary difference is capacity.
The XS403S provides approximately 410 g maximum capacity, while the XS603S increases that to 610 g.
The XS603S is therefore the better choice when laboratories regularly work with heavier sample containers, larger tare weights, or total loads exceeding 400 g.
If all procedures remain comfortably below that range, the XS403S can provide similar resolution with lower maximum capacity.
The draft-shield configuration makes the XS603S particularly useful for laboratories that want the capacity of a precision balance with additional protection from environmental disturbances.
At 1 mg readability, small fluctuations caused by air movement can become visible in the weighing result.
The enclosed chamber helps create a more stable environment around the sample and weighing pan.
This can be especially valuable for powders, filters, lightweight vessels, low-density materials, and repetitive quantitative procedures.
For laboratories comparing an open-pan 1 mg balance with the XS603S, the draft shield can therefore provide a meaningful practical advantage rather than simply being an accessory.
Every used Mettler Toledo XS603S 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 performance, stability, and reduced span across appropriate portions of the weighing range.
The MonoBloc weighing system, FACT automatic internal adjustment, touchscreen, controls, draft shield, leveling components, interfaces, weighing pan, and other installed functions are inspected and tested for proper operation.
The weighing chamber, draft-shield panels, weighing components, and accessible surfaces are thoroughly cleaned.
The balance then receives a final operational inspection before shipment.
Each refurbished XS603S includes a 90-day warranty from American Instrument Exchange.
American Instrument Exchange securely prepares the XS603S for shipment to protect its sensitive weighing system, draft-shield panels, terminal, weighing components, and electronics.
Once received, the balance should be installed on a rigid, stable, level laboratory work surface away from strong airflow and significant sources of vibration.
The instrument should be allowed to acclimate to the laboratory environment before final adjustment, calibration verification, and critical quantitative measurements are performed.
Because this XS603S includes a draft shield, care should also be taken during installation to ensure that all shield panels and doors are correctly seated and move freely.
For regulated applications, installation should be followed by appropriate calibration verification, repeatability testing, minimum-weight determination, or qualification according to the laboratory's quality procedures.
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.
The XS603S has a maximum weighing capacity of 610 g.
The XS603S provides 1 mg / 0.001 g readability throughout its full 610 g weighing range.
The XS603S is more accurately classified as a high-resolution precision balance. Its 1 mg readability is finer than many general-purpose precision balances but less sensitive than the 0.1 mg readability typically associated with an analytical balance.
Yes. This XS603S is equipped with a fully enclosed draft shield, with approximately 175 mm of usable weighing-chamber height.
Mettler Toledo specifies a 0.9 mg repeatability limit at nominal load, with typical repeatability of approximately 0.5 mg under reference conditions.
Mettler Toledo specifies a typical USP minimum sample weight of approximately 1.5 g under reference conditions. Actual minimum weight should be established from the installed balance's repeatability and the laboratory's applicable uncertainty requirement.
Mettler Toledo specifies an approximately 1.5-second settling time.
Yes. The XS603S incorporates FACT automatic internal adjustment, helping maintain weighing performance as environmental conditions change.
The XS603S is a single-range balance providing 1 mg readability throughout its entire 610 g capacity. The XS603SDR uses a DeltaRange architecture with different readability inside and outside its fine range.
Both provide 1 mg readability, but the XS603S has 610 g capacity compared with approximately 410 g for the XS403S. The XS603S is better suited for heavier samples and tare vessels.
A draft shield reduces air movement around the weighing pan. Although a 1 mg precision balance is less sensitive than an analytical or semi-microbalance, airflow can still affect stabilization and repeatability, particularly with lightweight samples and containers.
A refurbished XS603S provides laboratories with 610 g capacity, 1 mg readability, a full draft shield, fast stabilization, MonoBloc weighing technology, FACT automatic internal adjustment, touchscreen operation, built-in applications, and electronic connectivity at a lower acquisition cost than comparable new high-resolution precision balances. American Instrument Exchange tests, calibrates, cleans, and refurbishes each balance before shipment and provides a 90-day warranty.
CLICK HERE to see the Mettler XS603S Excellence balance on our YouTube channel
Yes, all equipment from American Instrument Exchange comes with a warranty.
Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.
Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality.
We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.
We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.
American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.
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