Cryogenic Vials, Self-Standing, with Silicone O-Ring Seal

# Cryogenic Vials, Self-Standing, with Silicone O-Ring Seal

ZHCLAB Cryogenic Vials provide dependable long-term storage for cell lines,
biological specimens, and research samples across molecular biology, cell
biology, and biobanking workflows. Available in sterile and non-sterile
configurations across multiple volumes and thread types.

## Key Features

**Virgin Polypropylene Construction**
Manufactured from virgin (prime-grade) polypropylene – not recycled
material – delivering high purity, consistent mechanical performance, and
freedom from contaminant impurities that can compromise sensitive
biological samples.

**Reinforced Thick-Wall Design**
Thickened tube walls provide superior structural integrity under repeated
freeze-thaw cycling and the mechanical stress of cryogenic handling,
minimizing the risk of cracking or deformation during long-term storage.

**Thread Options and Temperature Performance**
– *Internal Thread (EO Sterile):* Cap thread is contained within the tube
wall, maintaining consistent contact with the sample seal. Rated for
storage in the vapor phase of liquid nitrogen (-196deg C) through
autoclave (+121deg C). Certified Sterile, DNase/RNase Free, Pyrogen Free.
– *External Thread (EO Sterile):* Cap thread sits outside the tube body,
preventing cap threads from contacting the specimen and reducing
cross-contamination risk. Rated -80deg C to +121deg C. Certified Sterile,
DNase/RNase Free, Pyrogen Free.
– *External Thread (Non-Sterile, 500/bag):* Virgin PP construction with
the same thick-wall build and silicone O-ring seal. Rated -80deg C to
+80deg C. Suitable for general cold storage and applications where
downstream sterilization is performed by the end user. Available in
orange cap (single color) or assorted colors (red, yellow, green,
blue, white) for sample categorization.

**Silicone O-Ring Seal**
Integrated silicone O-ring washer maintains a leak-proof, hermetic seal
across the full temperature range – no separate washer insertion required.

**Self-Standing Base**
Star-foot base design allows vials to stand upright on the benchtop and
locks securely into standard cryogenic racks for single-handed operation.

**Sample Identification**
Clear molded graduations and a large white marking panel provide ample
space for labels, lot numbers, and sample identifiers.

**Material:** Virgin (prime-grade) polypropylene (PP)
**Wall:** Reinforced thick-wall construction
**Seal:** Silicone O-ring washer
**Base:** Self-standing star foot

## Common Applications

**Sterile (Internal Thread):**
– Long-term cryopreservation of cell lines in liquid nitrogen vapor phase
– Biobanking of serum, plasma, and tissue samples
– Storage of viral stocks, bacterial strains, and molecular reagents

**Sterile (External Thread):**
– -80deg C ultralow freezer repositories
– Cell culture sample archiving
– Antibody and protein storage

**Non-Sterile (External Thread, Bulk Pack):**
– High-throughput labs requiring large volume stock
– General cold storage of chemical standards and reagents
– Applications where end-user autoclaving is standard practice

## Usage Guidelines

Store internal thread vials only in the vapor phase of liquid nitrogen –
never in the liquid phase. Do not fill vials beyond 80% capacity to allow
for thermal expansion during freezing. Always use appropriate PPE
(cryogenic gloves, face shield) when retrieving samples from cryogenic
storage.

**Compatibility:** Fits standard 1-inch and 2-inch cryogenic storage boxes
and compatible freezer racks.