Laboratory Flasks | McMaster-Carr

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37 Products

Glass Flasks

Flasks

				Mouth
	Capacity	Dia.	Ht.	OD	ID	For Tapered Plug Trade Size	Graduations, ml	Color	Max. Temp., ° F	Autoclavable	Features		Each
Borosilicate Glass



		50 ml / 1.7 fl. oz.	2"	3 1/4"	7/8"	3/4"	3	10	Clear	840	Yes	Write-On Label	0000000	00000


		125 ml / 4.2 fl. oz.	2 5/8"	4 3/8"	1 1/8"	1"	5	25	Clear	930	Yes	Write-On Label	0000000	0000
		125 ml / 4.2 fl. oz.	2 3/4"	4 5/8"	1 3/8"	1 1/8"	6 1/2	25	Clear	930	Yes	Write-On Label	0000000	0000
		250 ml / 8.5 fl. oz.	3 1/4"	5 1/2"	1 3/8"	1 1/8"	6 1/2	25	Clear	930	Yes	Write-On Label	0000000	0000
		250 ml / 8.5 fl. oz.	3 3/8"	5 1/2"	2"	1 3/4"	10	50	Clear	930	Yes	Write-On Label	0000000	0000
		500 ml / 16.9 fl. oz.	4 1/8"	7 1/8"	1 3/8"	1 1/8"	6 1/2	50	Clear	930	Yes	Write-On Label	0000000	00000
		500 ml / 16.9 fl. oz.	4 1/8"	7 3/8"	2"	1 3/4"	10	100	Clear	930	Yes	Write-On Label	0000000	00000
		1,000 ml / 34 fl. oz.	5 1/8"	8 5/8"	1 5/8"	1 3/8"	8	50	Clear	930	Yes	Write-On Label	0000000	00000
		1,000 ml / 34 fl. oz.	5 1/8"	8 3/4"	2"	1 5/8"	10	50	Clear	930	Yes	Write-On Label	0000000	00000
		2,000 ml / 68 fl. oz.	6"	9"	2 3/4"	2 1/2"	13	200	Clear	930	Yes	Write-On Label	0000000	00000
		4,000 ml / 1.1 gal.	8 1/8"	14"	2 3/8"	1 3/4"	10	250	Clear	840	Yes	Write-On Label	0000000	00000

Flasks with Lid

				Mouth							Lid
	Capacity	Dia.	Ht.	OD	ID	For Tapered Plug Trade Size	Graduations, ml	Color	Max. Temp., ° F	Autoclavable	Type	Material	Color	Features		Each
Borosilicate Glass



		125 ml / 4.2 fl. oz.	2 5/8"	4 1/2"	7/8"	5/8"	1	25	Clear	930	Yes	Threaded	Phenolic	Black	Write-On Label	0000000	000000


		250 ml / 8.5 fl. oz.	3 3/8"	5 1/2"	1 1/8"	3/4"	—	25	Clear	930	Yes	Threaded	HDPE	Blue	Write-On Label	0000000	00000
		500 ml / 16.9 fl. oz.	4 1/8"	6 7/8"	1 1/2"	1 1/8"	—	50	Clear	930	Yes	Threaded	HDPE	Blue	Write-On Label	0000000	00000
		1,000 ml / 34 fl. oz.	5"	8 5/8"	1 1/2"	1 1/8"	—	50	Clear	930	Yes	Threaded	HDPE	Blue	Write-On Label	0000000	00000

Plastic Flasks

				Mouth							Lid
	Capacity	Dia.	Ht.	OD	ID	For Tapered Plug Trade Size	Graduations, ml	Color	Max. Temp., ° F	Autoclavable	Type	Material	Color		Each
PMP



		125 ml / 4.2 fl. oz.	2 5/8"	4 3/8"	1 1/4"	7/8"	4	25	Semi-Clear White	275	Yes	Threaded	Polypropylene	Semi-Clear White	0000000	000000


		250 ml / 8.5 fl. oz.	3 1/4"	5 3/8"	1 1/2"	1 1/8"	6	25	Semi-Clear White	275	Yes	Threaded	Polypropylene	Semi-Clear White	0000000	00000
		500 ml / 16.9 fl. oz.	4"	7"	1 5/8"	1 1/8"	6	50	Semi-Clear White	275	Yes	Threaded	Polypropylene	Semi-Clear White	0000000	00000
		1,000 ml / 34 fl. oz.	5 1/8"	8 3/4"	2 1/8"	1 5/8"	9	50	Semi-Clear White	275	Yes	Threaded	Polypropylene	Semi-Clear White	0000000	00000

Glass Boiling Flasks

The spherical body and uniform wall thickness allow even heat distribution.

				Mouth
	Capacity	Dia.	Ht.	OD	ID	Color	Max. Temp., ° F	Autoclavable	Features		Each
Borosilicate Glass



		250 ml / 8.5 fl. oz.	3 3/8"	5 1/8"	1 1/4"	1"	Clear	930	Yes	Write-On Label	0000000	000000


		500 ml / 16.9 fl. oz.	4 1/8"	6 3/8"	1 3/8"	1"	Clear	930	Yes	Write-On Label	0000000	00000
		1,000 ml / 34 fl. oz.	5 1/4"	7"	1 3/8"	1"	Clear	930	Yes	Write-On Label	0000000	00000

Glass Mixing Flasks

Also known as volumetric flasks, these have a wide base and long neck for fast mixing. A fill line indicates the capacity. Remove lids before autoclaving.

				Mouth						Lid				Each		Package
	Capacity	Dia.	Ht.	OD	ID	For Tapered Plug Trade Size	Color	Max. Temp., ° F	Autoclavable	Type	Material	Color	Features		Each	Pkg. Qty.		Pkg.
Borosilicate Glass



		25 ml / 0.85 fl. oz.	1 5/8"	3 7/8"	1/2"	1/4"	C	Clear	300	Yes	Tight Fitting	Polyethylene	Yellow	Fill Line, Write-On Label	0000000	000000	12	00000000	0000000


		50 ml / 1.7 fl. oz.	2"	5 1/2"	5/8"	3/8"	—	Clear	300	Yes	Snap Cap	HDPE	Blue	Fill Line	0000000	00000	12	00000000	000000
		100 ml / 3.4 fl. oz.	2 1/2"	6 3/4"	3/4"	1/2"	—	Clear	300	Yes	Snap Cap	HDPE	Blue	Fill Line	0000000	00000	12	00000000	000000
		250 ml / 8.5 fl. oz.	3 1/4"	8 5/8"	7/8"	1/2"	—	Clear	300	Yes	Snap Cap	HDPE	Blue	Fill Line	0000000	00000	12	00000000	000000
		500 ml / 16.9 fl. oz.	4"	10 1/4"	1"	3/4"	—	Clear	300	Yes	Snap Cap	HDPE	Blue	Fill Line	0000000	00000	12	00000000	000000
		1,000 ml / 34 fl. oz.	5"	11 7/8"	1"	3/4"	—	Clear	300	Yes	Snap Cap	HDPE	Blue	Fill Line	0000000	00000	6	00000000	000000

Density Testing Flasks

Accurately measure the density of a liquid based on volume and weight. Also known as pycnometers, these flasks help you compare the specific gravity of a liquid to water. They’re often used for quality control in labs for food and beverage, pharmaceutical, or chemical manufacturing. Made from borosilicate glass, these flasks resist chemicals and won’t expand or contract from temperature changes. Use the included non-mercury thermometer to check the temperature of your sample—it's tested for accuracy, has small increments for precision, and is safe for shipping and handling. You can place these flasks in a constant temperature bath to control the temperature of the liquids inside.

To find the specific gravity of a liquid, divide the weight of the testing liquid by the weight of water at the same temperature.

50 ml Capacity—50 ml flasks help you comply with ASTM D153 testing standards for finding the specific gravity of pigments.

				Mouth						Thermometer
	Cap., ml	Dia.	Ht.	ID	OD	Color	Max. Temp., ° F	Autoclavable	Includes	For Stem Lg.	Graduations, ° C	Temp. Measurement Range, ° C	Specs. Met		Each
Borosilicate Glass



		10	1 1/8"	6 5/8"	3/8"	5/8"	Clear	930	Yes	Thermometer	1 1/16"	0.2	14 to 38	—	0000000	0000000


		25	1 5/8"	6 7/8"	3/8"	5/8"	Clear	930	Yes	Thermometer	1 1/16"	0.2	14 to 38	—	0000000	000000
		50	2 1/8"	7 3/8"	3/8"	5/8"	Clear	930	Yes	Thermometer	1 3/4"	0.2	14 to 38	ASTM D153	0000000	000000