This is a pretty great set for the price. The glass is sound; I've performed half a dozen vacuum distillations with the kit and tried out almost every piece. No leaks and no signs of fatigue after several cycles at up to 140°C and down to -20°C at around 50 torr. I think most of the pieces should last quite a while as long as they are handled gently. Shipping took quite a while and several pieces were broken on arrival but within 24 hours of contacting the seller another shipment was on it's way with the replacement glass; this package was far speedier than the original order. I would recommend this product to anyone in need of a starter kit; the glass is not perfect but it works well and the seller will take care of any problems.
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