Best Corning Lab Flasks in 2026

CLASS A, ASTM E288 || Class A Tolerance, as per ASTM E288 standards

3 PIECE SET || Set includes three Volumetric flasks. 10ml, 25ml & 50ml capacities. Each flask includes a glass penny stopper, and features a single, white graduation mark

INDUSTRIAL QUALITY, SUPERIOR HEAT & CHEMICAL DURABILITY || Microwavable & autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Made of high quality Borosilicate 3.3 glass. Designed for use in professional laboratories, but is ideal for classroom, garage and home use

CLASS A, ASTM E288 || Class A Tolerance, as per ASTM E288 standards

3 PIECE SET || Set includes three Volumetric flasks. 50ml, 100ml & 250ml capacities. Each flask includes a glass penny stopper, and features a single, white graduation mark

INDUSTRIAL QUALITY, SUPERIOR HEAT & CHEMICAL DURABILITY || Microwavable & autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Made of high quality Borosilicate 3.3 glass. Designed for use in professional laboratories, but is ideal for classroom, garage and home use

250mL CAPACITY || 250mL capacity and easy-to-read white enamel graduations every 50mL

INTEGRAL SIDE ARM || Conical flask with tubulated integral side arm adaptable to 3/8" internal diameter tubing

HEAVY WALL || Heavy wall design for safe use under vacuum pressure

500ML CAPACITY || Single Erlenmeyer Flasks with 500mL capacity and easy-to-read white enamel graduations every 100mL

INDUSTRIAL STRENGTH || Made of high quality, heavy duty, borosilicate 3.3 glass with excellent strength against breakage. Microwavable and autoclavable, with superior chemical durability. Can withstand high temperatures and thermal shocks

SUPERIOR DURABILITY || Features uniform wall thickness ideal for heating and a reinforced rim for protection against high impacts

INDUSTRIAL STRENGTH || Made of high quality, heavy duty, Borosilicate 3.3 glass. Thick, uniform walls provide excellent strength against breakage. Designed for use in professional laboratories, but is ideal for classroom, garage and home use

5 PIECE SET || Set includes five Erlenmeyer flasks. 50ml, 150ml, 250ml, 500ml & 1000ml capacities. Flasks feature narrow necks, beaded rims and white, printed graduations

SUPERIOR HEAT & CHEMICAL DURABILITY || Microwavable and autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks

1000ml conical filtering flask made from Borosilicate Glass

Integral Side Arm measures 14.2mm long with an inner diameter of 4.6mm and an outer diameter of 8.5mm

For use in storing, mixing, and transferring various solutions

Class B Borosilicate Glass

Includes 1000ml, 500ml, 250ml flasks with glass stoppers

Tolerance ±0.100 ml

Flask made of heavy duty borosilicate glass.

1000ml Capacity

Narrow neck

Flask made of heavy duty borosilicate glass.

50ml Capacity

Long neck

1000ml class A borosilicate glass volumetric flask

Tolerance ±0.300 ml

Comes with solid glass No. 22 stopper

Made of high quality Borosilicate glass

Includes snap cap

100ml blue graduation line for precise dilution and preparation

50mL round bottom, wide neck boiling flask made of lab-grade borosilicate 3.3 glass

Inside diameter of mouth is 1-1/8"

Diameter of flask bulb is 2"

INDUSTRIAL STRENGTH || Made of high quality, heavy duty, Borosilicate 3.3 glass. Designed for use in professional laboratories, but is ideal for classroom, garage and home use

50ML CAPACITY || Flask has a 50ml capacity, calibrated to contain, and features a single white graduation mark. Fitted with an interchangeable size 13 polypropylene stopper

ASTM, CLASS A || ASTM, Class A tolerance, ±0.05ml as per ASTM-E288

Made of high quality, heavy duty, Borosilicate 3.3 glass

100ml capacity. White graduations

Beaded rim

Made of high quality borosilicate glass

Conical shape for spill prevention

Integral side arm

INDUSTRIAL STRENGTH || Made of high quality, heavy duty, Borosilicate 3.3 glass. Designed for use in professional laboratories, but is ideal for classroom, garage and home use

10ML CAPACITY || Flask has a 10ml capacity, calibrated to contain, and features a single white graduation mark. Fitted with a #9 polypropylene stopper

CLASS A, ASTM || Class A tolerance. Compliant with ASTM-E288 standards

25ml class A borosilicate glass volumetric flask

Tolerance ±0.030 ml

Comes with solid glass No. 9 stopper

Designed for nitrogen determination as per Kjeldahl method

Made of high quality Borosilicate glass

100mL capacity

INDUSTRIAL STRENGTH || Made of high quality, heavy duty, Borosilicate 3.3 glass. Designed for use in professional laboratories, but is ideal for classroom, garage and home use

500ML CAPACITY || Flask has a 500ml capacity, calibrated to contain, and features a single white graduation mark. Fitted with an interchangeable size 19 polypropylene stopper

ASTM, CLASS A || ASTM, Class A tolerance, ±0.20ml as per ASTM-E288

Made of high quality, heavy duty Borosilicate glass

500ml capacity. Narrow neck, round bottom, beaded rim.

6.75" tall, 4" bottom diameter

Made of high quality, heavy duty, 3.3 borosilicate glass. Class A tolerance

2000ml capacity, single white graduation mark

Fitted with solid glass stopper

5000ml Capacity Flask with barbed side arm for filtering

500ml graduations

Heavy boroscilicate glass walls

Designed for nitrogen determination as per Kjeldahl method

Made of high quality Borosilicate glass

800mL capacity

INDUSTRIAL QUALITY || Volumetric Flask made of high quality, heavy duty, 3.3 borosilicate glass. Class A, ±1.200 tolerance

5000ML CAPACITY || 5000ml capacity, with a single white graduation mark

POLYETHYLENE STOPPER || Flask is fitted with a 34/35 size stopper made of chemical and heat resistant polyethylene

Made of high quality, heavy duty, 3.3 borosilicate glass

500ml capacity

Stands 6" tall, and is 4" in diameter at its widest point

INDUSTRIAL QUALITY || 10,000ml Boiling Flask made of high quality, heavy duty, Borosilicate 3.3 glass. Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks

NARROW NECK || Flask features a narrow neck. Neck measures 4" in total length and has an inner diameter of 1.7" (44mm) and an outer diameter of 2.1" (54mm)

14.25 INCHES TALL || Flask stands 14.25" tall and is 11.5" in diameter at it's widest point

100ml class A borosilicate glass volumetric flask

Tolerance ±0.080 ml

Comes with solid glass No. 13 stopper

INDUSTRIAL QUALITY || 5000mL Volumetric Flask made of high quality, heavy duty, Borosilicate 3.3 glass

CLASS A TOLERANCE || Meets DIN ISO 1042 tolerance of ±1.200mL and is individually calibrated to contain

SUPERIOR DURABILITY || Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks