Specifications

Standard specifications for PTFE Erlenmeyer flasks. Items marked Customizable are available upon request.

Capacity	Neck ID (mm)	Bottom OD (mm)	Height (mm)
50ml	27	54	105
100ml	27	59	110
250ml	37	85	153
500ml	37	107	185
1000ml	47	139	260

📌 Customization Notes:
• Material Upgrade: PFA (translucent, visible contents, lower metal leaching)
• Sealing Options: Screw cap / Vent cap (0.22μm PTFE membrane for cell culture)
• Custom specifications available upon request

Product Description

I. Overview

The PTFE Erlenmeyer flask is manufactured from high-purity PTFE resin through cold pressing and high-temperature sintering. The classic conical design features a narrow neck for sealing and pouring, and a wide base for excellent stability. PTFE offers superior chemical inertness, hydrophobicity, and non-stick surfaces.

Available with screw caps or vent caps with 0.22μm PTFE membranes for gas exchange applications. Suitable for organic synthesis, cell culture, titration operations, and sample storage.

Available in sizes from 50ml to 1000ml, widely used in pharmaceutical, chemical, life sciences, and environmental testing industries.

II. Core Performance Parameters

Purity: High-purity PTFE with ultra-low metal leaching (Pb, U < 0.01ppb)
Operating Temperature: -196℃ ~ 260℃, short-term up to 300℃
Chemical Resistance: Resistant to HF, aqua regia, concentrated H₂SO₄, HNO₃, strong alkalis, and organic solvents
Surface Properties: Hydrophobic, non-stick, easy to clean
Sealing Options: Screw cap / Vent cap (0.22μm PTFE membrane)

III. Material & Workmanship

Manufactured from imported high-purity PTFE resin, precision cold-pressed in molds, and sintered in high-temperature furnaces — ensuring dense structure, smooth surface, and bubble-free finish. Caps and bodies are made from the same PTFE material for complete chemical compatibility.

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

Applications

Typical Applications

Organic Synthesis

Reaction vessel for heating, stirring, and reflux operations

Cell Culture

Vent cap flasks for suspension cell and microbial culture

Titration Operations

Conical design allows swirling without splashing

Sample Storage

Sealed storage of corrosive samples

Solution Preparation

Dissolving solids, mixing liquids

Application	Recommended Capacity	Recommended Sealing	Notes
Organic Synthesis	250ml / 500ml	Screw Cap	Ensure good sealing
Suspension Cell Culture	250ml / 500ml	Vent Cap	Aseptic technique required
Acid Digestion	100ml / 250ml	Screw Cap	Fume hood operation
Titration Analysis	100ml / 250ml	Screw Cap	Prevent splashing during swirling
Solution Preparation	250ml / 500ml	Screw Cap	Mix thoroughly

Selection Guide

I. By Sealing Type

Application	Recommended Sealing	Description
Cell Culture	Vent Cap (0.22μm PTFE)	Gas exchange, maintains sterility
Organic Synthesis	Screw Cap	Good sealing, prevents evaporation
Sample Storage	Screw Cap	Long-term sealed storage
Titration Operations	Screw Cap	Easy swirling and pouring

II. By Capacity

50ml ~ 100ml: Small-volume reactions, precious samples, microscale synthesis
250ml: Routine organic synthesis
500ml: Medium-scale reactions, cell culture
1000ml: Large-volume reactions, batch culture

💡 Selection Tip: Fill volume should not exceed 2/3 of flask capacity to allow for reaction and stirring space.
For cell culture, use caps with 0.22μm PTFE vent membranes to allow gas exchange while maintaining sterility.
To view contents, choose PFA material (translucent).

Operation & Maintenance

User Guide

Standard operating guidelines for PTFE Erlenmeyer flasks. Proper use and maintenance significantly extend product life and ensure laboratory safety.

I. Pre-use Preparation

Inspect the flask for cracks, deformations, and ensure the cap seal is intact
Clean with ultrapure water or appropriate solvent to remove manufacturing residues
For trace analysis applications, soak in 10% nitric acid for 24 hours, rinse thoroughly with ultrapure water, and dry
For sterile applications, autoclave (121℃, 15-20min)

II. Loading & Assembly

Add solids directly through the opening; use a funnel for liquids
Fill volume should not exceed 2/3 of capacity
Tighten the screw cap or vent cap to seal

III. Heating & Reaction Operations

Heatable on hotplates or heating mantles — temperature ≤ 250℃
Use stirring (magnetic stir bar or manual swirling) for uniform mixing
For reflux reactions, use a condenser with an appropriate adapter

IV. Cleaning & Maintenance

Routine Cleaning: Clean promptly after use with detergent and a soft cloth or sponge
Stubborn Residues: Soak in dilute nitric acid — PTFE's non-stick surface makes cleaning easy
Sterilization: Autoclave (121℃, 15-20min) or dry heat sterilization
Important: Do not use hard brushes or abrasives — they may scratch the inner surface

V. Important Notes

PTFE is relatively soft — avoid dropping or impact with hard objects
Do not heat with open flame
Avoid contact with molten alkali metals (Na, K) and elemental fluorine

💡 From a Seasoned Lab Technician: "The Erlenmeyer's conical shape was made for swirling" — the tapered design allows vigorous swirling without splashing, perfect for manual mixing and vortexing.
For cell culture, do not over-tighten vent caps — maintain gas exchange.
For magnetic stirring, use PTFE-coated stir bars to protect the inner surface.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Heating Safety

Always perform heating reactions in a fume hood with proper heat sources

Chemical Safety

Wear safety goggles, lab coat, and acid/alkali resistant gloves

Cell Culture Safety

Use aseptic technique with vent caps for gas exchange

PTFE Erlenmeyer Flask

Specifications

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Organic Synthesis

Cell Culture

Titration Operations

Sample Storage

Solution Preparation

Selection Guide

I. By Sealing Type

II. By Capacity

User Guide

I. Pre-use Preparation

II. Loading & Assembly

III. Heating & Reaction Operations

IV. Cleaning & Maintenance

V. Important Notes

Care & Notes

Heating Safety

Chemical Safety

Cell Culture Safety

Need PTFE Erlenmeyer Flasks?

PTFE Erlenmeyer Flask

Specifications

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Organic Synthesis

Cell Culture

Titration Operations

Sample Storage

Solution Preparation

Selection Guide

I. By Sealing Type

II. By Capacity

User Guide

I. Pre-use Preparation

II. Loading & Assembly

III. Heating & Reaction Operations

IV. Cleaning & Maintenance

V. Important Notes

Care & Notes

Heating Safety

Chemical Safety

Cell Culture Safety

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