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Three Class A borosilicate glass volumetric flasks of 25ml, 100ml, 1000ml sizes arranged horizontally, each with looped ground glass stopper, blue liquid inside pear bulb, golden calibration tolerance print, white background with mirror reflection, lab volumetric glassware size comparison render

Two Class A borosilicate glass volumetric flasks side by side: left 150ml with blue liquid, right 250ml with orange liquid, each fitted with looped ground glass stopper, golden/orange calibration volume print, white reflective background, lab volumetric glassware size comparison shot

Tilted inverted 100mL Class A borosilicate glass volumetric flask with looped ground glass stopper, blue liquid fully filling bulb and neck without leakage, reversed orange calibration print on glass surface, isolated white background, leak-proof sealing demonstration photo

25mL Class A glass volumetric flask feature graphic, main flask with blue liquid, two circular zoom insets: top glass loop stopper leak-proof structure, bottom golden calibration tolerance print, text labels "Small capacity error", "Good sealing performance, leak-proof even when inverted", white background

Single 100mL Class A transparent borosilicate glass volumetric flask with white plastic stopper, light blue liquid inside pear bulb, golden printed calibration tolerance data, isolated white background with bottom reflection, lab precision volumetric glassware

Six-step laboratory volumetric flask operating procedure infographic, grid layout with numbered step photos: 1.Cleaning,2.Leak test,3.Sample addition,4.Transfer,5.Make up to volume,6.Shake well, gloved lab technician operating glass volumetric flasks, beakers and wash bottles, white background with green text labels

Features & Details

🔒 GL45 THREADED NECK	Standard GL45 threaded bottle mouth fitted with polypropylene blue screw cap and internal PTFE liner.
💧 DRIP-FREE POUR RING	Includes snap-on anti-drip plastic pouring ring, preventing droplets from running down outer glass walls.
🔥 121°C STEAM STERILE	Safely autoclavable at 121°C for 20 minutes; resists rapid temperature cycling on heated shaker tables.
📐 CERAMIC GRADUATION	Permanently fired white ceramic graduation scale and large matte labeling patch resist lab washings.

About this item

Product specification

Attribute

Product Specifications

Material & Design Features

Material Construction

High Borosilicate 3.3 Glass (Heat & Corrosion Resistant)

Cap & Ring Material

Threaded Blue PP Screw Cap with Anti-Drip Pouring Ring

Capacity & Dimensions Chart

Micro / Small Volumes

5ml: Body O.D 23mm | Neck O.D 11mm | Height 75mm

10ml: Body O.D 29mm | Neck O.D 11mm | Height 90mm

25ml: Body O.D 38mm | Neck O.D 12mm | Height 110mm

50ml: Body O.D 48mm | Neck O.D 13mm | Height 140mm

Standard / Large Volumes

100ml: Body O.D 60mm | Neck O.D 18mm | Height 170mm

1000ml: Body O.D 125mm | Neck O.D 28mm | Height 320mm

Laboratory Synthesis, Distillation & Volumetric Containment

GL45 Screw Cap Erlenmeyer Flask Borosilicate 3.3, 5ml-1000ml Autoclavable Conical Flask High temperature resistant labware for titration Professional Series

Ensuring dependable accuracy during daily operations requires professional equipment engineered to withstand demanding laboratory and industrial environments. The GL45 Screw Cap Erlenmeyer Flask Borosilicate 3.3, 5ml-1000ml Autoclavable Conical Flask High temperature resistant labware for titration 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:
Boro 3.3 flared-rim Erlenmeyer flask

Use Cases

Autoclavable & Sterile Cell Culture & Biology Chemical Synthesis Pocket Size Portable Sample Preparation

FAQs

Q1: What is the main advantage of a screw cap Erlenmeyer flask over a standard one?

A1: The threaded screw cap provides a highly secure, leak-proof seal. Unlike open-mouth or rubber-stoppered flasks, it allows you to aggressively shake cultures or store volatile chemicals long-term without any risk of spilling or evaporation.

Q2: Are the cap and the pouring ring safe for autoclave sterilization?

A2: Yes. Both the blue screw cap and the clear anti-drip pouring ring are manufactured from high-quality Polypropylene (PP). They are highly heat-resistant, making them perfectly safe for standard 121°C or 134°C laboratory autoclave cycles.

Q3: Can I heat this flask directly on a bunsen burner?

A3: No. You should never apply a direct open flame to the flat bottom of any Erlenmeyer flask, as localized heat causes uneven thermal expansion and cracking. You must always place a ceramic-centered wire gauze between the flame and the glass to distribute the heat evenly.

Q4: Will the printed graduations fade after washing?

A4: No. The white graduation marks and the labeling area are printed using highly durable, chemical-resistant enamel that is baked onto the glass. They are designed to withstand repeated washing, scrubbing, and high-temperature autoclaving without fading.

GL45 Screw Cap Erlenmeyer Flask Borosilicate 3.3, 5ml-1000ml Autoclavable Conical Flask High temperature resistant labware for titration

Price range: $9.99 through $25.99

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.