Specifications

Below are standard specifications for plastic centrifuge tubes. Items marked Customizable are available upon request.

15ml Conical Bottom

Capacity	Material	Bottom	O.D.	Length	Max RCF	Sterile
15ml	PP	Conical	17mm	118-120mm	12000xg	Gamma

50ml Conical Bottom

Capacity	Material	Bottom	O.D.	Length	Max RCF	Sterile
50ml	PP	Conical	29-30mm	114-115mm	15500xg	Gamma

50ml Self-standing Bottom

Capacity	Material	Bottom	O.D.	Length	Max RCF	Sterile
50ml	PP	Self-standing	29mm	115mm	3000xg	Gamma

Dimensions are typical values and may vary slightly by batch.

📌 Customization Notes:
• Custom capacities available (15ml / 50ml / others)
• Bottom type options: conical / self-standing / round
• Sterilization options: gamma / EO / non-sterile
• Packaging options: bag / rack / box

Product Description

I. Overview

The plastic centrifuge tube is an essential consumable for sample separation and processing in the laboratory. Manufactured from high-purity polypropylene (PP) through precision injection molding, featuring high clarity, smooth surface, and low protein binding.

Available in conical and self-standing bottom styles. The conical bottom design ensures efficient pellet recovery after centrifugation, while the self-standing bottom allows tubes to stand upright for sample storage. Caps are made of high-density polyethylene (HDPE) with leak-proof sealing.

Features clear printed graduations and a white marking area. Sterilized by gamma irradiation, certified DNase/RNase-free and pyrogen-free. Suitable for cell culture, nucleic acid extraction, protein purification, blood separation, and cryopreservation.

🔬 Bottom Style Selection:
Conical Bottom — Pellets concentrate at the tube tip for efficient recovery. Ideal for cell pellets, microbial collection, nucleic acid/protein extraction.
Self-standing Bottom — Flat bottom allows tubes to stand upright. Ideal for sample storage, media storage, and routine non-centrifugation operations.

II. Core Performance Parameters

Tube Material: Polypropylene (PP), high clarity, low protein binding
Cap Material: High-density polyethylene (HDPE), leak-proof seal
Bottom Types: Conical / Self-standing / Round
Capacities: 15ml, 50ml
Max RCF: 12000-15500xg (varies by size and bottom type)
Temperature Range: -80℃ ~ 121℃
Sterilization: Gamma irradiated
Quality: Sterile, pyrogen-free, DNase/RNase-free
Graduations: Molded/printed graduations with white marking area

III. Material & Workmanship

Manufactured from medical-grade polypropylene (PP) resin through precision injection molding. Tubes feature uniform wall thickness, high clarity, and smooth surfaces that minimize sampleresidue and protein binding.

Caps are made of high-density polyethylene (HDPE) with a sealing ring design to prevent leakage during high-speed centrifugation. Tubes feature clear black printed graduations and a white marking area for easy labeling.

All products are manufactured and packaged in cleanroom environments and sterilized by gamma irradiation.

Applications

Typical Applications

Cell Culture

Cell collection, passaging, cryopreservation

Microbiology

Bacterial/yeast collection, cell pelleting

Nucleic Acid Extraction

DNA/RNA isolation and purification

Protein Purification

Protein precipitation, affinity purification

Blood Separation

Serum/plasma separation, blood cell isolation

Cryopreservation

Long-term storage at -80℃

General Lab Use

Centrifugation, mixing, aliquotting

Industries

Teaching Labs Biology and medical education
Pharmaceutical QC labs, R&D labs
Clinical Diagnostics Medical testing, blood analysis
Biotechnology Genetic engineering, protein engineering
Research Institutions Biomedical laboratories

Selection Guide

I. By Bottom Type

Application	Recommended Bottom	Reason
Cell pelleting, microbial collection	Conical	Pellets concentrate at tip for recovery
Nucleic acid/protein extraction	Conical	Efficient pellet recovery
Sample storage, media storage	Self-standing	Stands upright for easy handling
Routine non-centrifugation operations	Self-standing / Round	Stable tube positioning

II. By Capacity

15ml: Routine cell culture, small-volume sample separation, nucleic acid extraction, protein purification
50ml: Large-volume cell culture, blood sample separation, tissue homogenization, bulk sample processing

III. By RCF Rating

≤ 3000xg: Self-standing tubes
≤ 12000xg: 15ml conical tubes
≤ 15500xg: 50ml conical tubes

💡 Selection Tip: 15ml conical is the most commonly used centrifuge tube size.
For efficient pellet recovery, choose conical bottom.
For sample storage or frequent access, choose self-standing.
For high-speed centrifugation (>12000xg), choose 50ml conical.

Operation & Maintenance

User Guide

Below are standard operating guidelines for plastic centrifuge tubes. Proper use ensures experimental safety and product performance.

I. Pre-use Preparation

Inspect for cracks, deformation, and cap seal integrity
Confirm material compatibility with the sample
Verify the tube's maximum RCF rating before use
For sterile applications, confirm package integrity

II. Centrifugation Operation

Add sample to the tube, not exceeding the marked capacity
Tighten the cap clockwise to ensure a secure seal
Check that the cap is fully tightened before centrifugation to prevent cap blow-off
Place tubes symmetrically in the rotor with proper balancing
Set centrifugation parameters within the tube's RCF rating
After centrifugation, carefully remove tubes to avoid disturbance

III. Cleaning & Disposal

Single-use tubes are recommended for one-time use to avoid contamination
If reusing, rinse promptly after use and air dry
Never use hard brushes or abrasives on the inner wall
Biohazardous samples should be disposed of according to biological safety regulations

💡 From a Seasoned Lab Technician: "Conical for pellets, self-standing for storage" — Use conical for pellet recovery, self-standing for sample storage.
"Balance precisely, seal tightly" — Always balance and tighten caps before centrifugation to prevent rotor imbalance and sample leakage.
"For -80℃ storage, seal is critical" — Ensure caps are fully sealed for cryopreservation to prevent contamination and evaporation.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Temperature Range

PP tubes can be used from -80℃ to 121℃

Autoclavable

Can be autoclaved at 121℃ (cap open)

Chemical Compatibility

PP is resistant to most acids, bases, and alcohols

Biosafety

Follow appropriate biosafety guidelines when handling biohazardous samples

Do not

Centrifugation Safety: Do not exceed the tube's maximum RCF rating

Plastic Centrifuge Tube

Specifications

15ml Conical Bottom

50ml Conical Bottom

50ml Self-standing Bottom

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Cell Culture

Microbiology

Nucleic Acid Extraction

Protein Purification

Blood Separation

Cryopreservation

General Lab Use

Selection Guide

I. By Bottom Type

II. By Capacity

III. By RCF Rating

User Guide

I. Pre-use Preparation

II. Centrifugation Operation

III. Cleaning & Disposal

Care & Notes

Temperature Range

Autoclavable

Chemical Compatibility

Biosafety

Need Plastic Centrifuge Tubes?

Plastic Centrifuge Tube

Specifications

15ml Conical Bottom

50ml Conical Bottom

50ml Self-standing Bottom

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Cell Culture

Microbiology

Nucleic Acid Extraction

Protein Purification

Blood Separation

Cryopreservation

General Lab Use

Selection Guide

I. By Bottom Type

II. By Capacity

III. By RCF Rating

User Guide

I. Pre-use Preparation

II. Centrifugation Operation

III. Cleaning & Disposal

Care & Notes

Temperature Range

Autoclavable

Chemical Compatibility

Biosafety

Related Products

Plastic Reagent Bottle (Narrow)

Plastic Reagent Bottle (Wide)

Plastic Cryovial

Plastic Sample Vial

Need Plastic Centrifuge Tubes?