E-4802 is a 2 mil transparent PO (polyolefin) label made of soft material with a permanent water-based acrylic adhesive — the clear-facestock counterpart to the white E-4812. It is designed for identification labelling of cryogenic laboratory sample containers: polypropylene (PP) cryogenic vials, tubes and storage boxes (PP and cardboard) stored from −150 °C to −196 °C in liquid nitrogen. Information stays secure for the full duration of the sample's cryogenically extended life, and the label survives up to 10 thaw-and-refreeze cycles. Application is by direct labelling of frozen surfaces at −80 °C — the −196 °C figure is the storage/service temperature, not an application temperature, and the label must never be applied while immersed in liquid nitrogen.
| Property | Value |
|---|---|
| Facestock | 2 mil (0.060 mm) transparent PO (polyolefin) |
| Adhesive | Permanent water-based acrylic (0.020 mm) |
| Liner | 0.055 mm |
| Application temperature | −80 °C — direct-apply to frozen surfaces; never apply in liquid nitrogen |
| Service / storage temperature | −196 to 100 °C |
| Suitable containers | PP cryovials/cryotubes, lab tubes and storage boxes (PP and board) |
| Peel adhesion | 5 N/25 mm (GB/T 2792) |
| Initial adhesion | 9.5 N/25 mm (GB/T 31125) |
| Retention force | ≥ 48 h/25 mm (GB/T 4851) |
| Freeze-thaw cycles | Up to 10 |
| Shelf life | 1 year below 22 °C / 60% RH |
No online download — samples and the TDS are sent one-to-one by email.