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USA Lab
1L, 2L, 5L Boro 3.3 Heavy Wall Filter Flask 1/2" Barb
$39.99 - $149.99
In stockPrice varies by Size.
Heavy-wall vacuum filter flask in 3.3 borosilicate glass with a 1/2 in. hose-barb sidearm, in 1 L, 2 L and 5 L. The heavy wall is what allows the body to be evacuated, which a standard thin-wall Erlenmeyer is not built for. Neck diameter and maximum vacuum rating are not documented on this listing.
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Description
Heavy-wall vacuum filtration flask in 3.3 borosilicate glass with a 1/2 in. hose-barb sidearm, listed in three capacities.
- 1000 mL / 1 L (FILTERFLASK-1L)
- 2000 mL / 2 L (FILTERFLASK-2L)
- 5000 mL / 5 L (FILTERFLASK-5L)
- Glass: borosilicate 3.3, heavy wall
- Sidearm: 1/2 in. hose barb
The heavy wall is the point of difference from a conical Erlenmeyer: the body is intended to be pulled under vacuum, which thin-wall glassware is not built for. The 1/2 in. barb takes 1/2 in. inside-diameter vacuum tubing; use tubing rated for vacuum service, as thin-wall tubing collapses under draw.
Neck diameter, overall height and a maximum vacuum rating are not documented on this listing, and no funnel, stopper or filter adapter is listed as included. Confirm the neck fit against your Buchner funnel or adapter before ordering.
Frequently asked questions
What sizes are available?+
Three: 1 L (FILTERFLASK-1L), 2 L (FILTERFLASK-2L) and 5 L (FILTERFLASK-5L).
What glass is used?+
Borosilicate 3.3, in a heavy-wall form, as stated on the listing.
What tubing fits the sidearm?+
The sidearm is a 1/2 in. hose barb, so it takes 1/2 in. inside-diameter tubing. Use vacuum-rated tubing; thin-wall tubing can collapse under vacuum.
Is a Buchner funnel, adapter or stopper included?+
No. This listing covers the flask only. The funnel, filter adapter and stopper are ordered separately.
What vacuum level is the flask rated to?+
Not documented. No maximum vacuum or pressure rating is published for this item. Request it from us before use if your protocol specifies one.
Will my Buchner funnel fit the neck?+
The neck diameter is not documented on this listing, so we cannot confirm fit from the published data. Measure your funnel or adapter, or ask us to check, before ordering.
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