Sartorius Secura 124-1S Analytical Balance – Used & Refurbished
The Sartorius Secura 124-1S Analytical Balance is a high-performance laboratory weighing instrument designed for precise quantitative measurements, reliable documentation, and enhanced protection against common weighing errors. With a maximum capacity of 120 g, 0.1 mg readability, and advanced safety features including isoCAL automatic internal adjustment, SQmin minimum-weight monitoring, and electronic leveling assistance, the Secura 124-1S is particularly well suited for pharmaceutical, biotechnology, chemical, and quality-control laboratories.
Available used and refurbished from American Instrument Exchange, the Sartorius SECURA124-1S combines analytical weighing performance with a color touchscreen, enclosed draft shield, USB connectivity, GLP/GMP documentation capabilities, and integrated weighing applications.
Each refurbished unit is inspected, calibrated, performance tested, and cleaned by American Instrument Exchange and includes a 90-day warranty.
Key Features
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120 g maximum weighing capacity
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0.1 mg / 0.0001 g readability
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0.1 mg repeatability specification
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±0.2 mg linearity limit
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Single-range analytical weighing
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isoCAL automatic internal adjustment
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SQmin minimum sample weight monitoring
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Real-Time Level Support with electronic leveling alerts
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Color touchscreen interface
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Enclosed glass draft shield
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90 mm diameter weighing pan
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Approximately 209 mm weighing chamber height
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USB-Direct connectivity
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GLP/GMP-oriented documentation functions
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Password protection and configurable safety settings
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Below-balance weighing capability
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Refurbished and tested by American Instrument Exchange
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90-day warranty included
Overview
The Sartorius Secura 124-1S belongs to the Secura family of analytical balances, developed to combine accurate mass determination with features that help laboratories prevent weighing errors before they affect analytical results.
The balance provides 120 g maximum capacity with 0.1 mg readability throughout its weighing range.
Unlike basic analytical balances that primarily display mass, the Secura platform incorporates functions designed to monitor instrument readiness, adjustment status, minimum sample weight, and operating conditions.
These capabilities are particularly useful in laboratories where weighing results must be reproducible, documented, and consistent with established quality procedures.
Common Applications
The Sartorius Secura 124-1S is suitable for pharmaceutical quality control, analytical chemistry, reference standards preparation, biotechnology research, chemical formulation, gravimetric analysis, quantitative sample preparation, environmental testing, and laboratory research.
Pharmaceutical laboratories can use the balance to prepare analytical standards, weigh formulation ingredients, and measure samples for quality-control procedures.
Biotechnology laboratories can use it for reagents, compounds, powders, and other research materials requiring four-decimal-place analytical resolution.
Chemical and environmental laboratories can use the Secura 124-1S for quantitative sample preparation and gravimetric procedures where accurate, repeatable mass determination is essential.
Ideal Laboratory Types
The Secura 124-1S is particularly well suited for pharmaceutical manufacturers, biotechnology companies, analytical testing laboratories, contract research organizations, chemical laboratories, quality-control departments, universities, and environmental testing facilities.
Its integrated safety functions make it especially attractive to laboratories that need more than basic analytical weighing but do not require the additional sensitivity of a semi-microbalance.
Analytical Weighing Performance
The Sartorius Secura 124-1S provides 120 g capacity with 0.1 mg readability.
Manufacturer specifications identify repeatability of 0.1 mg and a linearity limit of ±0.2 mg.
This performance places the instrument within the conventional four-decimal-place analytical balance category.
The single-range configuration provides consistent 0.1 mg readability throughout the full 120 g capacity, eliminating the need to switch between different readability ranges.
For laboratories routinely weighing small samples, reference materials, and analytical reagents, this combination provides a practical balance between sensitivity, capacity, and operating convenience.
Minimum Sample Weight & USP Applications
Minimum sample weight is an important consideration when using an analytical balance for pharmaceutical or other quantitative applications.
Although the Secura 124-1S displays measurements in 0.1 mg increments, readability alone does not establish the smallest sample that can be weighed with acceptable uncertainty.
Manufacturer literature for the Secura 124 analytical platform has identified a typical USP minimum weight of approximately 120 mg, although the actual minimum sample weight depends on repeatability and the laboratory's operating conditions.
Laboratories should determine their applicable minimum sample weight through appropriate performance testing and documented procedures rather than relying exclusively on a published typical value.
SQmin Minimum Weight Monitoring
One of the distinguishing features of the Secura 124-1S is Sartorius SQmin technology.
SQmin allows a laboratory to establish a minimum permissible sample weight based on its weighing requirements.
When properly configured, the balance can alert users when the sample mass falls below the established minimum.
This provides an additional safeguard against recording results that do not meet the laboratory's defined minimum-weight criteria.
SQmin is particularly valuable in pharmaceutical quality control, analytical testing, and other applications where minimum sample weight is incorporated into standard operating procedures.
isoCAL Automatic Internal Adjustment
The Sartorius Secura 124-1S incorporates isoCAL automatic internal adjustment.
The system uses an internal reference weight to adjust the balance when specified environmental or operating conditions are met.
For the Secura 124 analytical platform, automatic adjustment can be triggered by temperature changes of approximately 1.5 K or an elapsed interval of approximately four hours, depending on configuration.
Automatic adjustment helps compensate for environmental changes that could otherwise affect measurement accuracy.
External verification using appropriate certified reference weights should still be performed according to laboratory quality procedures.
Real-Time Level Support
Correct leveling is essential for reliable analytical weighing.
The Secura 124-1S incorporates electronic leveling assistance designed to notify the operator when the instrument is not properly leveled.
This feature is especially useful after cleaning, relocation, or adjustment of the balance's installation surface.
Leveling alerts help reduce the possibility of performing sensitive measurements while the balance is improperly positioned.
Controlling Drafts, Vibration & Static
At 0.1 mg readability, environmental conditions can significantly influence weighing performance.
Air movement from HVAC systems, open doors, and nearby personnel can create unstable readings.
Vibration from centrifuges, shakers, pumps, compressors, and unstable laboratory benches can also interfere with sensitive measurements.
Static electricity may affect powders, filters, plastic containers, and other insulating materials.
The Secura 124-1S incorporates an enclosed draft shield to reduce the influence of air movement.
For best results, the balance should be installed on a stable, level weighing surface away from vibration and direct airflow.
Color Touchscreen & Guided Operation
The Secura 124-1S uses a color touchscreen designed to simplify laboratory weighing procedures.
The interface provides access to weighing applications, operating settings, adjustment functions, and instrument information.
Clear visual prompts help users recognize operating conditions requiring attention.
For laboratories with multiple operators, the touchscreen can simplify training and promote more consistent use of weighing procedures.
GLP/GMP Documentation & Data Integrity
The Secura platform was designed with documentation and quality-assurance requirements in mind.
The balance supports GLP/GMP-oriented records, calibration and adjustment information, and electronic transfer of weighing results.
Password protection and configurable safety settings provide additional control over instrument operation.
These features can help laboratories maintain more consistent weighing procedures and reduce the risk of undocumented changes to important settings.
Regulatory compliance ultimately depends on the complete laboratory workflow, software configuration, validation, and operating procedures rather than the balance alone.
USB-Direct Connectivity
The Sartorius Secura 124-1S includes a USB interface with USB-Direct functionality.
This allows weighing results to be transferred to a compatible computer without requiring specialized additional software for basic data transfer.
Electronic transfer can reduce manual transcription and simplify the creation of laboratory records.
For laboratories performing repeated analytical procedures, this can improve workflow efficiency and reduce opportunities for recording errors.
Key Specifications
| Specification |
Sartorius Secura 124-1S |
| Manufacturer |
Sartorius |
| Model |
SECURA124-1S |
| Balance Type |
Analytical Balance |
| Weighing Range |
Single Range |
| Maximum Capacity |
120 g |
| Readability |
0.1 mg / 0.0001 g |
| Repeatability Specification |
0.1 mg |
| Linearity Limit |
±0.2 mg |
| Internal Adjustment |
Yes, isoCAL |
| isoCAL Temperature Trigger |
Approx. 1.5 K |
| isoCAL Time Trigger |
Approx. 4 Hours |
| Recommended External Test Weight |
100 g, E2 Class |
| Weighing Pan Diameter |
90 mm |
| Weighing Chamber Height |
Approx. 209 mm |
| Draft Shield |
Enclosed Glass |
| Display |
Color Touchscreen |
| Minimum Weight Monitoring |
SQmin |
| Leveling Assistance |
Real-Time Level Support |
| Data Interface |
USB |
| Below-Balance Weighing |
Yes |
| Overall Dimensions |
Approx. 216 mm W × 360 mm D × 320 mm H |
| Operating Temperature |
10–30°C |
| Power Supply |
AC Adapter, 100–240 VAC, 50/60 Hz |
| Condition |
Used & Refurbished |
| Warranty |
90 Days from American Instrument Exchange |
Secura 124-1S vs. Secura 224-1S
The Secura 124-1S and Secura 224-1S are both single-range analytical balances with 0.1 mg readability.
The primary difference is maximum capacity.
The Secura 124-1S provides 120 g capacity, while the Secura 224-1S increases capacity to 220 g.
Both models incorporate the Secura platform's advanced safety and adjustment features.
The 124-1S is an excellent choice for laboratories whose samples and weighing vessels remain comfortably within 120 g. The 224-1S is preferable when heavier containers or samples are routinely used.
Secura 124-1S vs. Secura 125-1S
The Secura 124-1S is a conventional analytical balance with 0.1 mg readability.
The Secura 125-1S is a semi-microbalance offering 0.01 mg readability, ten times finer than the 124-1S.
Both have 120 g maximum capacity, but the 125-1S is intended for applications requiring greater sensitivity and lower practical minimum sample weights.
The Secura 124-1S is generally more appropriate for routine analytical weighing where 0.1 mg resolution is sufficient.
Secura vs. Quintix Analytical Balances
The Sartorius Secura and Quintix families share many analytical weighing capabilities, including touchscreen operation and automatic internal adjustment on applicable models.
The Secura series adds an expanded collection of safety-oriented functions, including SQmin minimum-weight monitoring and advanced leveling assistance.
For laboratories primarily interested in routine analytical weighing, a Quintix balance may provide adequate functionality.
For laboratories emphasizing error prevention, documented procedures, and minimum-weight control, the Secura platform offers additional advantages.
Refurbishment & Performance Testing
Each used Sartorius Secura 124-1S offered by American Instrument Exchange undergoes inspection, cleaning, calibration, and functional testing before shipment.
Technicians inspect the housing, touchscreen, draft shield, weighing pan, leveling components, power supply, and installed accessories.
Weighing performance is evaluated with appropriate reference weights at multiple points across the 120 g capacity.
Repeatability testing uses repeated measurements of the same reference load to evaluate consistency.
Linearity testing checks performance at different loads, while corner-load testing evaluates the effect of sample placement on weighing results.
The internal isoCAL system, zero and tare functions, touchscreen controls, and applicable safety features are also checked.
Following final inspection and cleaning, the balance is prepared for shipment.
Refurbished equipment from American Instrument Exchange includes a 90-day warranty unless otherwise specified.
Shipping & Installation Considerations
The Secura 124-1S should be installed on a rigid, level, vibration-resistant weighing surface.
Direct airflow from HVAC outlets, fans, doors, and other sources should be minimized.
After shipment, the balance should be allowed to acclimate to the laboratory environment before critical measurements begin.
The leveling system should be checked, internal adjustment performed as appropriate, and weighing performance verified with suitable reference weights.
For demanding analytical measurements, operators should also consider sample temperature, static electricity, and vibration.
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.
Sartorius Secura 124-1S Analytical Balance FAQs
What is the maximum capacity of the Sartorius Secura 124-1S?
The balance has a maximum capacity of 120 g.
What is the readability?
The Secura 124-1S provides 0.1 mg, or 0.0001 g, readability.
Is the Secura 124-1S an analytical or semi-microbalance?
It is an analytical balance. The Secura 125-1S is the related semi-micro model with 0.01 mg readability.
Does the Secura 124-1S have internal calibration?
Yes. The balance incorporates Sartorius isoCAL automatic internal adjustment.
What is SQmin?
SQmin is a minimum-weight monitoring function that can alert operators when the sample weight is below a configured minimum.
What is Real-Time Level Support?
It is an electronic leveling assistance feature that alerts users when the balance is not properly leveled.
Can the Secura 124-1S be used for pharmaceutical weighing?
Yes. Its analytical readability, isoCAL adjustment, SQmin monitoring, and documentation features make it suitable for many pharmaceutical weighing applications, subject to the laboratory's validated procedures.
Does the balance have USB connectivity?
Yes. USB-Direct allows basic weighing-result transfer to compatible computers.
What is the weighing pan diameter?
The balance has a 90 mm diameter weighing pan.
What is the difference between the Secura 124-1S and 224-1S?
Both provide 0.1 mg readability, but the 124-1S has 120 g capacity while the 224-1S provides 220 g capacity.
Does the balance support below-balance weighing?
Yes. The Secura 124-1S supports below-balance weighing for appropriate specialized applications.
Is this Sartorius Secura 124-1S new or refurbished?
This unit is offered used and refurbished by American Instrument Exchange, with performance testing and a 90-day warranty.
Why purchase a refurbished Sartorius Secura 124-1S?
A refurbished Secura 124-1S provides analytical weighing performance, automatic internal adjustment, minimum-weight monitoring, electronic leveling assistance, and modern data-transfer capabilities at a lower acquisition cost than many comparable new analytical balances.
