Specifications

Below are standard specifications for plastic sample vials. Items marked Customizable are available upon request.

Screw Cap Vials

Capacity	Material	Sealing	Height	O.D.	Neck Dia.	Liner
2ml	HDPE/PP	Screw	32mm	12mm	9mm	PTFE/PE
4ml	HDPE/PP	Screw	45mm	15mm	13mm	PTFE/PE
8ml	HDPE/PP	Screw	52mm	18mm	15mm	PTFE/PE
20ml	HDPE/PP	Screw	65mm	27mm	20mm	PTFE/PE
40ml	HDPE/PP	Screw	85mm	32mm	24mm	PTFE/PE
60ml	HDPE/PP	Screw	100mm	35mm	28mm	PTFE/PE
100ml	HDPE/PP	Screw	115mm	42mm	32mm	PTFE/PE

Crimp Cap Vials

Capacity	Material	Sealing	Height	O.D.	Neck Dia.	Liner
2ml	HDPE/PP	Crimp	32mm	12mm	9mm	PTFE/PE
4ml	HDPE/PP	Crimp	45mm	15mm	13mm	PTFE/PE
8ml	HDPE/PP	Crimp	52mm	18mm	15mm	PTFE/PE
20ml	HDPE/PP	Crimp	65mm	27mm	20mm	PTFE/PE

Dimensions are typical values and may vary slightly by batch.

📌 Customization Notes:
• Material options: HDPE / PP
• Custom capacities available (2ml~100ml)
• Sealing options: screw cap / crimp cap
• Liner options: PTFE/PE / silicone / no liner
• Color options: translucent / amber / white

Product Description

I. Overview

The plastic sample vial is an essential consumable for sample storage and instrumental injection in the laboratory. Manufactured from high-density polyethylene (HDPE) or polypropylene (PP) through precision injection molding, offering excellent chemical stability and dimensional consistency.

Available with screw caps and crimp caps, equipped with PTFE/PE composite liners for reliable sealing and chemical inertness. The vial body is highly transparent for easy viewing of contents and features clear graduations.

Capacities range from 2ml to 100ml, compatible with most HPLC/GC autosamplers. Suitable for chromatography injection, standard storage, environmental water sampling, food testing, and many other laboratory applications.

🔬 Sealing Method & Liner Selection:
Screw Cap — Reusable sealing, easy to operate. Ideal for samples requiring multiple accesses.
Crimp Cap — Single-use sealing, better seal integrity. Ideal for long-term storage and transport.
PTFE/PE Liner — PTFE layer contacts the sample for chemical inertness; PE layer provides sealing elasticity. Suitable for organic solvents and corrosive samples.

II. Core Performance Parameters

Material: HDPE / PP (optional)
Sealing: Screw cap / Crimp cap
Liner: PTFE/PE composite
Capacities: 2ml, 4ml, 8ml, 20ml, 40ml, 60ml, 100ml
Temperature Range: -20℃ ~ 120℃
Chemical Compatibility: Dilute acids, dilute alkalis, salt solutions, most organic solvents
Compatibility: Fits HPLC/GC autosampler trays
Graduations: Molded graduations for easy reading

III. Material & Workmanship

Manufactured from high-purity HDPE/PP resin through precision injection molding. The vials are dimensionally consistent for seamless autosampler tray fit. Liners feature a PTFE/PE composite — the PTFE layer provides chemical inertness, while the PE layer ensures sealing elasticity.

All products are manufactured and packaged in cleanroom environments to ensure contamination-free surfaces.

Applications

Typical Applications

Chromatography

HPLC and GC sample injection vials

Standard Storage

Analytical standards and standard materials

Environmental Sampling

Water quality samples, soil leachates

Food Testing

Food samples and additive testing

Pharmaceutical

Drug testing and stability sample storage

Headspace Analysis

Volatile organic compound headspace sampling

Industries

Teaching Labs Chemistry and biology education
Pharmaceutical QC labs, R&D labs
Food Industry Food testing, quality control
Environmental Monitoring Water quality analysis, soil testing
Research Institutions Analytical laboratories

Selection Guide

I. By Sealing Method

Application	Recommended Sealing	Reason
Multiple accesses, frequent opening	Screw Cap	Reusable, easy to operate
Long-term storage, transport	Crimp Cap	Single-use, better seal integrity
Autosampler direct injection	Screw / Crimp	Both are compatible

II. By Capacity

2ml / 4ml: Chromatography injection, standard storage (most common)
8ml / 20ml: Environmental water sampling, food testing
40ml / 60ml / 100ml: Bulk sample storage, headspace analysis

💡 Selection Tip: 2ml screw cap vial is the most commonly used size for HPLC/GC autosamplers.
For long-term sealed storage, choose crimp caps for better reliability.
For multiple accesses, choose screw caps for convenience.
PTFE/PE liners are suitable for most organic solvents and corrosive samples.

Operation & Maintenance

User Guide

Below are standard operating guidelines for plastic sample vials. Proper use ensures sample integrity and injection accuracy.

I. Pre-use Preparation

Inspect for cracks, deformation, and liner integrity
Rinse with solvent or distilled water and air dry
Confirm material compatibility with the sample
For sterile applications, confirm package integrity

II. Sample Loading Operation

Add the sample to the vial, not exceeding the marked capacity
For chromatography analysis, fill to approximately 70-80% of capacity
Place the liner over the vial opening
Screw cap: Tighten clockwise to seal
Crimp cap: Use a crimper to apply even pressure to seal
Label the vial body or cap with sample information

III. Cleaning & Disposal

Single-use vials are recommended for one-time use to avoid cross-contamination
If reusing, rinse with solvent and air dry
Never use hard brushes or abrasives on the inner wall
Biohazardous or chemical hazard samples should be disposed of according to regulations

💡 From a Seasoned Lab Technician: "Screw for autosamplers, crimp for long-term storage" — Use screw caps for autosampler use, crimp caps for long-term storage.
"PTFE side toward the sample, PE side toward the cap" — When installing liners, the PTFE layer should face the sample.
"Seal immediately after loading" — Seal vials promptly to prevent solvent evaporation and contamination.
"2ml is the golden standard" — 2ml vials are the most universal size for HPLC/GC autosamplers.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Chemical Safety

When handling organic solvents or corrosive samples, wear protective gloves and safety goggles

Temperature Range

HDPE/PP can be used from -20℃ to 120℃

Not Autoclavable

Sample vials are generally not autoclavable — verify before use

Solvent Compatibility

Verify HDPE/PP tolerance for strong organic solvents before use

Plastic Sample Vial

Specifications

Screw Cap Vials

Crimp Cap Vials

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Chromatography

Standard Storage

Environmental Sampling

Food Testing

Pharmaceutical

Headspace Analysis

Selection Guide

I. By Sealing Method

II. By Capacity

User Guide

I. Pre-use Preparation

II. Sample Loading Operation

III. Cleaning & Disposal

Care & Notes

Chemical Safety

Temperature Range

Not Autoclavable

Solvent Compatibility

Need Plastic Sample Vials?

Plastic Sample Vial

Specifications

Screw Cap Vials

Crimp Cap Vials

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Chromatography

Standard Storage

Environmental Sampling

Food Testing

Pharmaceutical

Headspace Analysis

Selection Guide

I. By Sealing Method

II. By Capacity

User Guide

I. Pre-use Preparation

II. Sample Loading Operation

III. Cleaning & Disposal

Care & Notes

Chemical Safety

Temperature Range

Not Autoclavable

Solvent Compatibility

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