Lab336-429 / 25 × 5 mm, 2-up — PET Low-Temp Labels for Laboratory Cryovials & Slides

Lab336-429 is a two-column die-cut laboratory cryogenic label made with matte white PET polyester film face stock, single-side coated with cryogenic adhesive, for use from -196 °C LN₂ to 121 °C autoclaving. 25 × 5 mm is the narrowest single-column format in the T429 polyester series; the roll face is die-cut in two parallel columns, and both columns are dispensed simultaneously in a single feed pass. Each label is only 5 mm high and carries a single field, making it suitable for narrow-wall microtubes, narrow-band labeling of small-diameter cryovials, and batch zone identification of sample boxes and transport outer cartons.

Product Overview

Lab336-429 is manufactured according to the T429 polyester cryogenic label process, with matte white PET polyester film face stock and cryogenic adhesive, and has passed four-tier testing: LN₂ -196 °C, freezer -80 °C, hot water 100 °C, and autoclaving 121 °C. Narrow strips place higher demands on the flatness of the application surface; when applied to cylindrical surfaces such as cryovials and test tubes, the ends must overlap by at least 3 mm to resist edge lifting caused by repeated handling and ultra-low temperature shrinkage. Two-column die-cutting places two parallel columns on the roll face, covering two column positions in a single feed pass, suitable for two markings on the same specimen or high-volume batch dispensing; a single 5 mm-high label accommodates only one field, and multi-field requirements should use wider formats in the same family; the parallel two-column layout also allows paired numbers for the same tube body and cap to be completed in a single feed pass, reducing printer start-stop waiting.

Key Features

• Full four-tier temperature chain: T429 has passed four-tier testing at LN₂ -196 °C, freezer -80 °C, hot water 100 °C, and autoclaving 121 °C, covering the complete workflow from ultra-low temperature storage to rewarming and sterilization.
• Two-column parallel die-cutting: two columns are die-cut simultaneously on the roll face, producing two columns per feed pass, reducing both roll consumption and feed passes, suitable for paired labeling and high-volume batch dispensing.
• 25 × 5 mm ultra-narrow single format: each label holds only one field, and when applied to the walls of microtubes and small-diameter containers it does not obscure graduations or viewing surfaces.
• End overlap ≥3 mm: when applied to cryovial surfaces, the ends must overlap by at least 3 mm; pairs with BRL-80-BK / BRL-110-BK cryogenic ribbons and M611, EOS2/3, MACH4S printers for dispensing.

Specifications

Item No.: Lab336-429 (page code Lab336-422)
Material: matte white PET polyester film
Temperature range: -196 °C / -80 °C / 100 °C / 121 °C
Size: 25 × 5 mm, two-column die-cut
Corner shape: rounded / square corners optional
Packaging: 500–1000 labels/roll
Recommended ribbon: BRL-80-BK / BRL-110-BK
Recommended printers: M611 / EOS2/3 / MACH4S
Sales Hotline: 18015583218

Typical Applications

• Narrow-band labeling of microtubes and small-diameter cryovials: only a single field such as an ID or date is marked on the tube body, and the narrow strip does not obscure tube-wall graduations; the parallel two columns facilitate paired labeling of tube body and cap.
• Zone marking of sample boxes and cryoracks: ultra-narrow labels are applied in columns to box dividers and rack crossbars as position numbers, and labeling of multiple compartments in one box can be completed in a single feed pass.
• Transport outer carton packaging identification: the official application scope of T429 includes packaging identification; narrow strips are suitable for small-area batch numbers at carton seals and remain legible after -80 °C freezing and 121 °C sterilization.
• Clinical laboratory aliquot tube batch numbers: for short IDs on small batches of aliquot tubes, two-column parallel dispensing completes tube body and cap labeling for a group of specimens in one pass.

FAQ

• How much information fits? Each label is 5 mm high; only one field is recommended. For dual fields such as ID plus barcode, use Lab094-429 at 25 × 10 mm or Lab062-429 at 25.4 × 9.53 mm.
• How are the two-column die-cuts used? Two parallel columns on the roll face are printed in the same pass by the printer, usable for two markings on the same specimen or for continuous dispensing to improve batch efficiency; the two columns can also print the tube body ID and cap ID separately, eliminating manual pairing.
• Can it be applied to microscope slides? The official scope of T429 covers cryovials/test tubes and packaging identification, not microscope slides; for slide archiving switch to T629, and for pathology solvent resistance switch to T424 with BRS ribbon.
• What should be noted when applying at low temperature? Clean and dry the tube surface before applying and ensure end overlap ≥3 mm; for -80 °C specimens, apply after rewarming, or complete labeling before LN₂ aliquoting.

Selection & Usage Guide

This product is positioned as "ultra-narrow single field × two-column dispensing," suitable for labeling scenarios with narrow tube walls, concise fields, and high volumes. Choose this product for a single field only; for ID plus barcode switch to Lab094-429 or Lab062-429; for full-wrap coverage of a single tube switch to Lab168-429-3 (20 × 15 mm, two columns); for batch tube labeling switch to Lab169-429 (25 × 17 mm, three columns); for room-temperature freezing scenarios above -40 °C only, switch to T419 / T329.

Usage Notes

Note: 5 mm narrow strips have little tolerance during application; apply to a flat area of the tube body and ensure end overlap ≥3 mm; for batch labeling of narrow strips, use a printer with a peel function to reduce adhesive contamination caused by manual peeling.

Need a Lab336-429 sample or bulk quotation? Custom sizes, printed content, pre-cutting, and ribbon matching are supported on request. Sales Hotline: 18015583218