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50 ml narrow mouth Erlenmeyer flask, borosilicate 3.3 glass conical shape with straight neck for swirling.

100 ml narrow neck Erlenmeyer conical flask, Boro 3.3 glass with tapered neck for culture mixing.

150 ml tapered neck conical flask, Boro 3.3 borosilicate glass for laboratory mixing.

250 ml conical mixing flask, Boro 3.3 borosilicate glass with narrow rim for analytical use.

300 ml narrow rim conical flask, Boro 3.3 glass straight rim for vortex mixing.

500 ml benchtop conical flask, Boro 3.3 borosilicate glass for lab mixing.

1000 ml large-volume conical flask, Boro 3.3 borosilicate glass for culture mixing.

Features & Details

⚡ NARROW MOUTH ERLENMEYER	Engineered specifically for Narrow Mouth Erlenmeyer Flask,, delivering dependable performance across testing workflows.
📊 PRECISION CALIBRATION	Calibrated for accurate measurements complying with international industrial standards.
🛡️ INDUSTRIAL COMPONENT QUALITY	Fabricated with durable components to safeguard internal circuits against heavy jobsite use.
📦 FACTORY INSPECTED & TESTED	Undergoes rigorous pre-shipment quality inspection ensuring out-of-the-box operational accuracy.

About this item

Product specification

Attribute

Product Specifications

Material & Structural Features

Glass Composition

Premium Borosilicate 3.3 Glass (Chemically Inert)

Mouth Type

Straight Narrow Mouth (Evaporation-reducing design)

Thermal Properties

Low thermal expansion, safe for 121°C / 134°C Autoclaving

Capacity & Dimensions Chart (Mouth I.D. / Base Dia. / Height)

Small Volumes (50mL – 150mL)

50mL: Mouth I.D 23mm (0.91 In) | Base 54mm (2.13 In) | Height 78mm (3.07 In)

100mL: Mouth I.D 30mm (1.18 In) | Base 66mm (2.60 In) | Height 99mm (3.90 In)

150mL: Mouth I.D 31mm (1.22 In) | Base 75mm (2.95 In) | Height 119mm (4.69 In)

Medium / Large Volumes (250mL – 1000mL)

250mL: Mouth I.D 33mm (1.30 In) | Base 85mm (3.35 In) | Height 148mm (5.83 In)

300mL: Mouth I.D 33mm (1.30 In) | Base 89mm (3.50 In) | Height 156mm (6.14 In)

500mL: Mouth I.D 33mm (1.30 In) | Base 105mm (4.13 In) | Height 185mm (7.28 In)

1000mL: Mouth I.D 40mm (1.57 In) | Base 131mm (5.16 In) | Height 230mm (9.06 In)

Laboratory Synthesis, Distillation & Volumetric Containment

Narrow Mouth Erlenmeyer Flask, Boro 3.3 Glass for Lab Mixing by Professional Series

Ensuring dependable accuracy during daily operations requires professional equipment engineered to withstand demanding laboratory and industrial environments. The Narrow Mouth Erlenmeyer Flask, Boro 3.3 Glass for Lab Mixing (50ml-1000ml) by Xin Tester provides verified stability, user-friendly operation, and certified safety compliance across standard maintenance protocols. Discover our complete line of diagnostic and testing instruments in the Lab Glassware catalog.

Uniform Heavy-Wall Blown Glass

Engineered with consistent wall thickness to resist vacuum pressure gradients and mechanical bench knocks during daily agitation.

Permanent Ceramic Markings

Fired white/blue ceramic graduations and matte labeling spots resist aggressive wash detergents, acid baths, and ultrasonic cleaning.

💡

Glassware Insight: Borosilicate 3.3 Thermal Expansion

With a thermal expansion coefficient of 3.3×10⁻⁶/K, Class A borosilicate glassware prevents thermal strain fractures when transitioning between boiling baths and cold washes.

Ordering & Model Verification

Verify capacity, joint sizing, and closure type in the product options before completing your order in the right-side buy box.

Related technical collections:
Lab Glassware |
Lab Consumables

Related products:
100–1000 mL conical flask

Use Cases

Chemical Synthesis High Speed Rotation Sample Preparation School Science Labs

FAQs

Q1: Why should I choose a narrow mouth flask instead of a wide mouth one?

A1: A narrow mouth Erlenmeyer flask is ideal for volatile chemicals because the small opening minimizes the surface area exposed to the air, drastically slowing down evaporation. It is also much easier to seal using standard solid rubber or silicone stoppers compared to wide-mouth variants.

Q2: Is this conical flask safe for direct heating?

A2: Yes, but with precautions. It is made of high Borosilicate 3.3 glass, which handles high temperatures perfectly. However, to prevent localized thermal stress, you should never place the flat bottom directly on an open bunsen burner flame. Always use a ceramic-centered wire gauze to distribute the heat evenly.

Q3: Can I use this flask for vigorous manual shaking?

A3: Absolutely. The defining feature of the Erlenmeyer shape is its wide base and sloped sides. This geometry forces the liquid to circulate back down into the base when you swirl it, allowing you to mix chemical reactants or perform manual titrations vigorously without splashing.

Q4: Will the white markings wash off in a dishwasher or autoclave?

A4: No. The volumetric graduations and the white labeling spot are printed using high-quality chemical-resistant enamel that is permanently baked onto the glass. They will remain highly visible even after repeated cycles of strong acid washing or 121°C autoclave sterilization.

Narrow Mouth Erlenmeyer Flask, Boro 3.3 Glass for Lab Mixing (50ml-1000ml) by Xin Tester

Price range: $8.99 through $22.99

Extra 5% Off with code: welcome5

Capacity

Clear

6–12 Month Warranty

Repair & Refund support available for most products.

Free Worldwide Shipping

Ships within 3 business days.

Taxes & Duties

Buyer responsible for local import fees.

24/7 After-Sales Support

Technical assistance & video guidance within 24h.