Clean and professional, happy with product

Unfortunately the item arrived with a crack. I worry it will fail at liquid nitrogen temperatures.

This is the final trap in my distillation system. It sits in either an ice and rock salt bath or wrapped in paper and inserted in dry ice in a modified cooler (drilled a hole in the lid, and a second relief hole, for off gassing any CO2,) The tube sits through the lid, keck clip snugly affixed, and vacuum attached. Center tube is straight down the center, and there are no blemishes on the glass or deformations (air bubbles, thin spots) visible. I have continuously operated it under vacuum while in the cooler to trap solvent (as well as rogue terpenes that evaporate during warm up.) The glass is ground nicely, the grinds are true ST 24/40, even though this is designed to be used assembled, chilled, and connected to vacuum. Great price, great little trap. When doing extractions under vacuum, or distilling under vacuum, a trap is a definite pump saver, and worth the investment.

Works well but has a small crack on bottom of tube (not all the way through)

this company is really professional. product is good quality glass.