stonylab
Heavy Wall Conical Separatory Funnel with 24/40 Joints and PTFE Stopcock
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Processing: 1-3 business days. Shipping: 3-7 business days.
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Available in 60ml, 125ml, 250ml, 500ml, 1000ml (1L), 2000ml (2L).
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Separatory funnel with PTFE stopcock for separating liquids with different densities
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Made of high quality glass
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Conical design ensures efficient separation
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Have not used it yet, but it appears well manufactured and looks to be fit for the intended purpose.
I'm a trained chemist, but it's been a while since I dabbled and I needed a new sep funnel. Frankly, for the price (~$60) I thought I would get crap. This funnel is not crap at all. I wish I had bought 3. Actually, now as I write this, I'm going to clear them out. If they restock, do yourself a favor and grab one. I can also confirm that it is most definitely borosilicate.
I'm a trained chemist, but it's been a while since I dabbled and I needed a new sep funnel. Frankly, for the price (~$60) I thought I would get crap. This funnel is not crap at all. I wish I had bought 3. Actually, now as I write this, I'm going to clear them out. If they restock, do yourself a favor and grab one. I can also confirm that it is most definitely borosilicate.
The PTFE stopcock seems to have been perforated in the wrong place, or else a piece of glass extrusion is blocking it. Only about a third of the hole in PTFE is available for flow when fully opened - Which sucks for viscous liquids.This item seems to have missed a quality check, assuming they do quality checks...
This is a well made product, I plan on using it frequently and for a long time.

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