Vacuum Filtering Kit
This special kit allows you to more quickly separate suspensions and mixtures using vacuum filtration.
Everything you need is included: a 500 ml vacuum filtering flask, a hand vacuum pump, a 2-piece plastic 90 mm Buchner funnel with approximate 300 ml capacity, 9 cm filter paper, connection tubing, and a rubber stopper. The stopper hole is specially cut to hold the Buchner funnel.
The hand pump greatly simplifies the process of vacuum filtration, eliminating the need for a water source and vacuum aspirator. It is also much more economical than a costly electric vacuum pump. You get great vacuum filtering results with this kit!
The vacuum pump is also available separately.
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- Sunday, March 03, 2013Faulty GageReviewed By: Thomas Allen
With some heating I can probably fit the tubing on the side of the flask. When I got the pump out the needle is stuck at 250, rather than zero. Is their a way I can fix this, or will I need to send it back?
- Thursday, January 17, 2013Good ApparatusReviewed By: Felipe
While I believe the apparatus is great for the price paid, I did have some trouble. The rubber tubing was difficult to attach to the side nozzle of the 500 mL flask, requiring me to heat it, and then force fit it.
The vacuum pump, while a bit flimsy, does pull a decent vacuum.
The rubber stopper tends to shed shards of rubber when the funnel is installed, I believe continued use will smoothen out the inside and prevent this in the future.
Overall, great product. A few modifications would make it better.
- Sunday, December 23, 2012PerfectReviewed By: Axel
I had no problem with this item ! Everything work great!
- Tuesday, July 31, 2012Flask disappointmentReviewed By: Annette
Although our family has been very satisified with previous orders we were very disappointed with the Vaccum Filtering Kit. The flask looked nothing like picture shown in catalogue and the connecting tube would not fit the flask. We called customer service and were told to boil the tubing in water and while hot try and slip tubing on the flask. After several unsucessful attemps I called back and the girl in customer service told me the flask in catalogue had been replaced and this was the "best we would be able to do". We finally had to get other tubing larger to fit the flask and wedge the orginal tubing in it so it would fit the pump. HST adds
: This incident prompted our research & development team to re-examine this kit.Since then, we've modified the kit and corrected this with Annette. Thank you for letting us know!
- Saturday, January 28, 2012Consider itReviewed By: Hobbyist
This should specify that the funnel is a two part plastic one, not porcelain. The pump is of chinese quality and you probably won't be able to fit the hose on the 500mL flask. But overall for the money and student grade it's not bad, just don't expect anything amazing.