SAFE® Barcode-Reader FAQ –
2D DataMatrix, Rack-Scanning & Traceability
SAFE® Barcode-Readers and identification systems from LVL technologies connect physical samples with digital laboratory workflows. In this FAQ section, we answer key questions on 2D DataMatrix codes, single-tube readers, SBS rack readers, rack scanning, LIMS integration, and material-integrated laser marking.
The systems enable automated and position-accurate capture of SAFE® 2D tubes in standardized SBS formats. Deeply engraved 2D DataMatrix codes, simultaneous rack scanning, and unambiguous position assignment create reliable traceability from sample receipt to analysis or long-term archiving. Captured data can be transferred to LIMS systems or exported in standard formats such as CSV.
Especially in biobanking, pharmaceutical research, diagnostics, and high-throughput environments, SAFE® Barcode-Readers reduce manual entry errors, support reproducible automation processes, and provide a stable foundation for digital sample logistics.
Identification Basics
SAFE® 2D tubes feature a permanently embedded 2D DataMatrix code on the tube bottom.
The code is engraved directly into the material using a fiber laser.
Key features:
- Engraving depth approx. 50 µm
- ISO 15415 quality grade A or B
- Scratch-resistant
- Cryo-stable down to −196 °C
Optionally, a 1D or HR side label can be added.
A 2D DataMatrix code stores more information in a smaller area and is less susceptible to partial coverage or contamination.
For 2D sample tubes in high-throughput operations, it enables reliable machine-readable identification of each sample.
In biobanking, large sample volumes are managed over long periods.
Manual labeling is error-prone.
Machine-readable 2D codes allow consistent digital documentation and reduce the risk of sample mix-ups.
Single-Tube Reader
A single-tube reader is used when individual 2D tubes need to be scanned independently of the rack.
This is relevant, for example, at sample receipt, during transfers, or in validation processes.
A single-channel reader enables rapid reading of individual 2D DataMatrix codes without handling the entire rack.
Data can be transferred directly to a LIMS system or exported in standard formats such as CSV.
The readers are designed for laboratory environments.
For optimal readability, tubes should be free of ice or condensation before scanning to avoid optical interference.
SBS Rack Reader
An SBS rack reader is a system that scans all 2D tubes in a 24-, 48-, or 96-position rack simultaneously.
All DataMatrix codes are captured in a single scan.
Simultaneous scanning significantly reduces scan time and minimizes manual intervention.
In high-throughput workflows, this supports process speed and reproducibility.
The defined SBS grid structure of the rack ensures a geometrically unique position for each tube.
Combined with precise optical capture, each ID is unambiguously assigned to its physical position.
In a validated test with 3,465 automated pick-and-place cycles, an error rate of 0.086 % was measured.
No process interruptions occurred.
The combination of precise dimensional accuracy, stable rack geometry, and deeply engraved 2D codes supports reproducible robotic processes.
Integration & LIMS
Yes.
Captured 2D codes can be transferred directly to LIMS systems. This creates a consistent digital sample history from receipt to archiving or analysis.
Reader systems support standard data export formats such as CSV or text files.
Depending on infrastructure, integration via middleware or API is also possible.
Each tube ID is individually generated during production and checked against the full historical production database.
Rack-wise verification before shipment ensures no duplicate codes.
Combined with LIMS integration, this creates a traceable digital documentation chain.
Process Reliability & Automation
Yes.
SBS rack readers and identification systems can be integrated into automated storage or robotic systems.
Standardized rack geometry is a key requirement for reproducible scanning processes.
In high-throughput environments, large sample volumes must be reliably identified.
The combination of deeply engraved codes (approx. 50 µm), ISO 15415 Grade A/B, and stable rack positioning supports consistent readability even under mechanical stress or cryogenic conditions.
Automated scanning replaces manual data entry.
This reduces transcription errors, number transpositions, or label mix-ups.
In GMP-adjacent or regulated environments, this supports stable and traceable process documentation.
Laser Marking as Part of Traceability
A barcode reader reads existing codes.
A tube laser marker adds an additional material-integrated marking – for example, text, symbols, or study-specific information – linked to the existing tube ID.
The TLM 864 is used when additional information beyond the standardized 2D code needs to be permanently applied to the tube.
Laser marking is:
- Material-integrated
- Scratch-resistant
- Cryo-stable down to −196 °C
- Resistant to condensation
Unlike labels, the marking does not detach under cold or moisture stress.
The TLM 864 supports SBS formats 24, 48, and 96.
Marking performance reaches up to 500 tubes per hour.
Data can be imported via CSV files, allowing structured integration into existing laboratory workflows.
