Specifications

Below are standard specifications for plastic Erlenmeyer flasks. Items marked Customizable are available upon request.

Open Erlenmeyer Flasks

Capacity	Material	Height (mm)	Bottom Dia. (mm)	Neck Dia. (mm)
50ml	PMP	80	52	28
100ml	PMP	102	67	43
250ml	PMP	137	90	57
500ml	PMP	147	114	56
1000ml	PMP	213	142	82
2000ml	PMP	247	169	105

Stoppered Erlenmeyer Flasks

Capacity	Material	Height (mm)	Bottom Dia. (mm)	Neck Dia. (mm)	Cap
50ml	PMP	80	53	32	GL Screw Cap
100ml	PMP	102	66	34	GL Screw Cap
250ml	PMP	137	90	49	GL Screw Cap
500ml	PMP	147	113	49	GL Screw Cap
1000ml	PMP	224	143	63	GL Screw Cap
2000ml	PMP	247	168	87	GL Screw Cap

Dimensions are typical values and may vary slightly by batch.

📌 Customization Notes:
• Custom capacities available (50ml~2000ml)
• Style options: open / stoppered
• Cap type options: GL screw cap / rubber stopper
• Graduation color customizable

Product Description

I. Overview

The plastic Erlenmeyer flask (conical flask) is a versatile laboratory vessel for liquid mixing, titration, and sample storage. Manufactured from high-clarity polymethylpentene (PMP) through precision injection molding, featuring high clarity, smooth surface, and clear graduations.

Available in 50ml, 100ml, 250ml, 500ml, 1000ml, and 2000ml sizes, in open and stoppered styles. Stoppered flasks feature GL standard screw caps for leak-proof sealing, preventing evaporation and contamination. The conical design facilitates mixing and titration operations.

Compared to glass Erlenmeyer flasks, plastic flasks are shatterproof and safer to use, and autoclavable. Suitable for microbiology, media preparation, titration, sample storage, and more.

🔬 Style Comparison:
Open Flasks — Classic design for routine mixing, titration, and heating. Convenient access.
Stoppered Flasks — GL screw cap for media preparation, sample storage, and long-term preservation. Prevents evaporation and contamination.

II. Core Performance Parameters

Material: High-clarity polymethylpentene (PMP)
Process: Precision injection molding
Spec Range: 50ml ~ 2000ml
Styles: Open / Stoppered (GL screw cap)
Design: Conical body for mixing and titration
Graduations: Clear printed markings
Temperature Range: -20℃ ~ 150℃
Chemical Compatibility: Resistant to dilute acids, alkalis, salt solutions, and many organic solvents
Sterilization: Autoclavable (121℃, 15psi)

III. Material & Workmanship

Manufactured from high-quality PMP resin through precision injection molding. The flask body features uniform wall thickness, high clarity, and an ergonomic conical design for easy handling and operation. Stoppered flasks feature GL screw caps for reliable sealing.

Every batch undergoes rigorous dimensional and accuracy testing to ensure consistent quality.

Applications

Typical Applications

Media Preparation

Microbial media preparation and sterilization

Titration Analysis

Acid-base titration, redox titration

Sample Storage

Temporary or long-term liquid sample storage (stoppered)

Liquid Mixing

Solution preparation and mixing

Microbial Culture

Shake flask culture of bacteria, yeast, and other microorganisms

Teaching Labs

Chemistry and biology education

Industries

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

Selection Guide

I. By Style

Application	Recommended Style	Reason
Routine mixing, titration, heating	Open	Classic design, convenient access
Media preparation, sample storage, long-term preservation	Stoppered	Leak-proof sealing, prevents evaporation and contamination
Microbial culture	Stoppered	Sealed culture prevents contamination

II. By Capacity

50ml / 100ml: Small volume mixing, micro titration, small-scale culture
250ml / 500ml: Routine experiments, media preparation (most common)
1000ml / 2000ml: Large-scale culture, bulk sample storage

💡 Selection Tip: 250ml or 500ml open Erlenmeyer flask is the most commonly used size.
For media preparation or sample storage, choose stoppered style.
For heating or sterilization, PMP material can be autoclaved at 121℃.
The conical design is ideal for titration — liquids are less likely to splash.

Operation & Maintenance

User Guide

Below are standard operating guidelines for plastic Erlenmeyer flasks. Proper use ensures experimental safety and product longevity.

I. Pre-use Preparation

Inspect for cracks, deformation, and cap seal integrity (stoppered style)
Rinse with distilled or deionized water and air dry
Confirm material compatibility with the liquid
For sterile applications, autoclave before use (121℃)

II. Operation Guidelines

Pour liquid slowly along the flask wall
The conical design facilitates mixing — gently swirl or use a shaker
For titration, place the flask on a white background for easier color observation
Heat on a hot plate — never use direct flame
For stoppered flasks, secure the cap immediately after use to prevent evaporation and contamination
Clean and air dry immediately after use

III. Cleaning & Maintenance

Clean promptly after use and air dry
Stubborn residues: use mild neutral detergent, rinse with distilled water
Never use hard brushes or abrasives on the inner wall
Do not store corrosive reagents long-term
Store in a dry, cool place away from direct sunlight

💡 From a Seasoned Lab Technician: "Conical shape, splash-free" — The conical design prevents splashing during mixing operations.
"Stoppered for storage, open for operation" — Use stoppered for storage, open for routine operations.
"Titration made easy" — The conical shape makes it easy to observe color changes at the titration endpoint.
"Loosen cap before autoclaving" — When autoclaving, loosen the cap slightly to prevent deformation from pressure differences.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Safety

When heating or handling corrosive liquids, wear protective gloves and safety goggles

Temperature Range

PMP can be used from -20℃ to 150℃

No Direct Flame

Plastic flasks should not be heated directly over an open flame

Chemical Compatibility

PMP has limited tolerance to strong organic solvents — verify before use

Plastic Erlenmeyer Flask

Specifications

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Media Preparation

Titration Analysis

Sample Storage

Liquid Mixing

Microbial Culture

Teaching Labs

Selection Guide

I. By Style

II. By Capacity

User Guide

I. Pre-use Preparation

II. Operation Guidelines

III. Cleaning & Maintenance

Care & Notes

Safety

Temperature Range

No Direct Flame

Chemical Compatibility

Need Plastic Erlenmeyer Flasks?

Plastic Erlenmeyer Flask

Specifications

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Media Preparation

Titration Analysis

Sample Storage

Liquid Mixing

Microbial Culture

Teaching Labs

Selection Guide

I. By Style

II. By Capacity

User Guide

I. Pre-use Preparation

II. Operation Guidelines

III. Cleaning & Maintenance

Care & Notes

Safety

Temperature Range

No Direct Flame

Chemical Compatibility

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Need Plastic Erlenmeyer Flasks?