Laboratory Flasks | McMaster-Carr

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31 Products

Glass Flasks

Flasks

			Mouth
Cap.	Dia.	Ht.	OD	ID	For Plug Trade Size	Graduation Marks	Color	Max. Temp., °F	Autoclavable	Features		Each
Borosilicate Glass
50 ml / 1.7 fl. oz.	2 1/8"	3"	1"	5/8"	1	10 ml	Clear	840°	Yes	Write-On Label	0000000	000000
125 ml / 4.2 fl. oz.	2 5/8"	4 1/4"	1 1/4"	1"	5	25 ml	Clear	930°	Yes	Write-On Label	0000000	0000
125 ml / 4.2 fl. oz.	2 5/8"	4 1/4"	1 3/8"	1 1/8"	6	25 ml	Clear	930°	Yes	Write-On Label	0000000	00000
250 ml / 8.5 fl. oz.	3 1/4"	5 1/4"	1 3/8"	1"	5.5	25 ml	Clear	930°	Yes	Write-On Label	0000000	00000
250 ml / 8.5 fl. oz.	3 1/4"	5 1/4"	1 7/8"	1 3/8"	8	25 ml	Clear	930°	Yes	Write-On Label	0000000	00000
500 ml / 16.9 fl. oz.	4"	6 7/8"	1 1/2"	1 1/4"	7	50 ml	Clear	930°	Yes	Write-On Label	0000000	00000
500 ml / 16.9 fl. oz.	4"	7"	2 1/8"	1 3/4"	10	50 ml	Clear	930°	Yes	Write-On Label	0000000	00000
1,000 ml / 34 fl. oz.	4 3/4"	8 1/2"	2 3/8"	2"	11	50 ml	Clear	930°	Yes	Write-On Label	0000000	00000
1,000 ml / 34 fl. oz.	5"	8 3/8"	1 7/8"	1 5/8"	9	50 ml	Clear	930°	Yes	Write-On Label	0000000	00000
2,000 ml / 68 fl. oz.	6 1/4"	10 1/2"	3 1/8"	2 3/8"	13	100 ml	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 ml	Clear	840°	Yes	Write-On Label	0000000	000000

Flasks with Lid

			Mouth							Lid
Cap.	Dia.	Ht.	OD	ID	For Plug Trade Size	Graduation Marks	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 ml	Clear	930°	Yes	Threaded	Phenolic Plastic	Black	Write-On Label	0000000	000000
250 ml / 8.5 fl. oz.	3 1/4"	5 1/2"	1 3/8"	1 1/8"	6.5	50 ml	Clear	930°	Yes	Threaded	Phenolic Plastic	Black	Write-On Label	0000000	00000
500 ml / 16.9 fl. oz.	4"	7 1/4"	1 3/8"	1 1/8"	6.5	100 ml	Clear	930°	Yes	Threaded	Phenolic Plastic	Black	Write-On Label	0000000	00000
1,000 ml / 34 fl. oz.	5"	9"	1 3/8"	1 1/8"	6.5	50 ml	Clear	930°	Yes	Threaded	Phenolic Plastic	Black	Write-On Label	0000000	00000

Glass Boiling Flasks

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

Cap.				Mouth
ml	fl. oz.	Dia.	Ht.	OD	ID	For Plug Trade Size	Color	Max. Temp., °F	Autoclavable	Features		Each
Borosilicate Glass
250	8.5	3 1/4"	5 1/4"	1 1/4"	1"	4	Clear	930°	Yes	Write-On Label	0000000	000000
500	16.9	4"	6 1/8"	1 1/4"	1"	4	Clear	930°	Yes	Write-On Label	0000000	00000
1,000	34	5 1/8"	7 1/8"	1 1/4"	1"	4	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.

Cap.				Mouth						Lid
ml	fl. oz.	Dia.	Ht.	OD	ID	For Plug Trade Size	Color	Max. Temp., °F	Autoclavable	Type	Material	Color	Features		Each
Borosilicate Glass
25	0.85	1 5/8"	3 7/8"	1/2"	1/4"	C	Clear	300°	Yes	Tight Fitting	Polyethylene Plastic	Yellow	Fill Line, Write-On Label	0000000	000000
50	1.7	2 1/8"	5 1/8"	1/2"	3/8"	D	Clear	300°	Yes	Tight Fitting	Polyethylene Plastic	Yellow	Fill Line, Write-On Label	0000000	00000
100	3.4	2 3/8"	6 1/4"	5/8"	1/2"	00	Clear	300°	Yes	Tight Fitting	Polyethylene Plastic	Yellow	Fill Line, Write-On Label	0000000	00000
250	8.5	3 1/8"	8 7/8"	3/4"	5/8"	0	Clear	300°	Yes	Tight Fitting	Polyethylene Plastic	Yellow	Fill Line, Write-On Label	0000000	00000
500	16.9	4"	10 1/4"	7/8"	3/4"	2	Clear	300°	Yes	Tight Fitting	Polyethylene Plastic	Yellow	Fill Line, Write-On Label	0000000	00000
1,000	34	5 1/4"	12 1/4"	1"	3/4"	3	Clear	300°	Yes	Tight Fitting	Polyethylene Plastic	Yellow	Fill Line, Write-On Label	0000000	00000

Plastic Flasks

Cap.				Mouth							Lid
ml	fl. oz.	Dia.	Ht.	OD	ID	For Plug Trade Size	Graduation Marks	Color	Max. Temp., °F	Autoclavable	Type	Material	Color		Each
Polymethylpentene Plastic
125	4.2	2 5/8"	4 3/8"	1 1/4"	7/8"	4	25 ml	Semi-Clear White	275°	Yes	Threaded	Polypropylene Plastic	Semi-Clear White	0000000	000000
250	8.5	3 1/4"	5 3/8"	1 1/2"	1 1/8"	6	25 ml	Semi-Clear White	275°	Yes	Threaded	Polypropylene Plastic	Semi-Clear White	0000000	00000
500	16.9	4"	7"	1 5/8"	1 1/8"	6	50 ml	Semi-Clear White	275°	Yes	Threaded	Polypropylene Plastic	Semi-Clear White	0000000	00000
1,000	34	5 1/8"	8 3/4"	2 1/8"	1 5/8"	9	50 ml	Semi-Clear White	275°	Yes	Threaded	Polypropylene Plastic	Semi-Clear White	0000000	00000

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

			Mouth						Thermometer
Cap., ml	Dia.	Ht.	OD	ID	Color	Max. Temp., °F	Autoclavable	Includes	For Stem Lg.	Graduation Marks, °C	Temp. Range, °C	Specifications Met		Each
Borosilicate Glass
10	1 1/8"	6 5/8"	5/8"	3/8"	Clear	930°	Yes	Thermometer	1 1/16"	0.2°	14° to 38°	__	0000000	0000000
25	1 5/8"	6 7/8"	5/8"	3/8"	Clear	930°	Yes	Thermometer	1 1/16"	0.2°	14° to 38°	__	0000000	000000
50	2 1/8"	7 3/8"	5/8"	3/8"	Clear	930°	Yes	Thermometer	1 3/4"	0.2°	14° to 38°	ASTM D153	0000000	000000