Free AI-Assisted

Reagent QR Label Maker

Generate scannable QR labels for reagents with concentration, lot, expiry, hazard pictograms, and freezer location — print a full sheet in under a minute. Built-in AI agent assistant support.

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Key facts

Key facts about Reagent QR Label Maker
FactValue
TabsLabel Maker, Batch Import, Print Sheet
QR contentELN URL when provided; otherwise JSON with all label fields
Hazards9 GHS pictogram classes (multi-select)
Sheet presetsAvery 5160, Brady THT-1-422, cryo dot 1″×1.5″
Batch modesCSV paste with column mapping; serial template (Aliquot-###)
Print toolsBrowser print, X/Y offset ±5 mm, alignment test page
ExportCopy QR PNG; download CSV template
StorageLabel sheet queue in browser localStorage
AI assistantBuilt-in; validates labels and parses CSV via API

What it does

Handwritten Sharpie labels fade in −80°C freezers, and enterprise LIMS software costs thousands per year for features most bench scientists never use. Reagent QR Label Maker bridges that gap: a browser-only workspace that outputs structured, scannable labels with reagent metadata — name, concentration, hazard class, lot number, expiry, and storage location — ready to print on common cryo-label sheets.

The Label Maker tab provides a live two-column workspace. Fill reagent fields on the left and watch the QR preview update instantly on the right. Select GHS hazard pictograms, pick a color accent to distinguish projects on freezer racks, and optionally embed an ELN or SDS URL so scanning the label opens the digital record directly. Click Add to Sheet to queue the label for printing.

Batch Import accepts pasted CSV with automatic column mapping or generates sequential serial labels (e.g. Aliquot-001 through Aliquot-050) without a spreadsheet. Review parsed rows inline, fix blank names flagged in red, and add all valid rows to the print queue in one click.

The Print Sheet tab renders a WYSIWYG label grid matching Avery, Brady, or cryo-dot presets. Adjust X/Y alignment offsets (±5 mm) for printer calibration, print a test grid on plain paper before using expensive sticker sheets, then print the full label sheet through the browser.

Why researchers use it

  • Generate a print-ready QR label in under 60 seconds with no account or install
  • Encode reagent metadata (concentration, lot, expiry, hazard, location) in every scan
  • Deep-link physical tubes to ELN entries by embedding a URL in the QR code
  • Batch-import dozens of labels from CSV or auto-numbered serial templates
  • Calibrate printer alignment with test-grid print before using cryo sticker sheets
  • Work fully offline in air-gapped lab environments — all processing is client-side

Best for

  • Bench scientists labeling DMSO aliquots, antibody stocks, and buffer preparations
  • Small labs without LIMS budget that need structured freezer inventory
  • Cryo storage workflows where marker ink fails and labels must survive −80°C
  • Core facilities preparing multi-tube batches with sequential sample IDs
  • Labs linking physical reagent tubes to electronic notebook entries via QR scan

When to use this vs alternatives

Choose Reagent QR Label Maker when you need quick, structured QR labels for reagent tubes without LIMS cost. Enterprise inventory systems remain better for compliance audit trails and multi-site cloud sync.

What makes it different

Consumer QR label apps treat every item as generic text. Enterprise inventory systems require accounts, training, and annual licenses. Reagent QR Label Maker is purpose-built for bench reagent metadata with GHS hazard support, cryo-sheet print presets, and zero backend dependency.

| Feature | Sharpie / tape | Avery GHS Wizard | FreezerWorks | Reagent QR Label Maker | |---|---|---|---|---| | Cost | Free | Per-sheet software | ~$6K/year | Free | | Reagent fields | None | Chemical lookup | Full LIMS | Name, conc, lot, expiry, hazard, location | | QR scan to ELN | No | Limited | Yes (with login) | Yes (URL in QR) | | Batch import | No | No | Yes | CSV paste + serial generator | | Offline / air-gapped | Yes | No | No | Yes (client-side) | | Print alignment tools | No | Basic | Hardware drivers | X/Y offset + test grid |

Researchers choose this tool when they need scannable, hazard-aware reagent labels without LIMS overhead or consumer-app limitations.

How to get started

  1. Open the workspace; the Label Maker tab loads with the reagent form and live QR preview.
  2. Enter reagent name (required), concentration, dates, lot, hazard class, and storage location.
  3. Click Load example to see a DMSO demo label, then Add to Sheet.
  4. For batches, switch to Batch Import — paste CSV or generate serial labels.
  5. On Print Sheet, pick a label preset, adjust alignment offsets, and Print.

Frequently asked questions

What does the QR code contain when scanned?
If you provide an ELN or SDS URL, the QR encodes only that URL so scanning opens the link directly. Otherwise the QR encodes a JSON block with reagent name, concentration, dates, lot, hazard, location, and color accent.
Which label sheet sizes are supported?
Three presets: Avery 5160 (1″×2⅝″, 3×10), Brady THT-1-422 (small cryo wrap), and 1″×1.5″ cryo dot (4×6). The Print Sheet tab renders a WYSIWYG grid matching the selected preset dimensions.
How do I print labels aligned with my printer?
Use Print test page to output empty grid outlines on plain paper, overlay with your sticker sheet, then adjust X and Y offset sliders (±5 mm in 0.5 mm steps) until alignment is correct before printing real labels.
Can I import many labels at once?
Yes. On the Batch Import tab, paste a CSV with headers (name, concentration, unit, prep_date, expiry, lot, hazard, location, color, url) or use the serial generator with a template like Aliquot-###. Download the CSV template for the expected format.
Does this work offline in the lab?
Yes. All QR generation, validation, and print layout run entirely in your browser. No data is sent to Pepkio servers. Label sheet queues persist in localStorage on your device.
Can I use an AI agent with Reagent QR Label Maker?
Yes. The built-in assistant can help validate labels or parse CSV batches. External agents can call [API & MCP](/tools/developers) using pepkio_reagent-qr-label-maker to validate, build QR content, or generate serial rows programmatically.

Client source code & registry

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