Alpha Nanotech Chemical-Resistant Quartz Crucibles with Lids (50 ml)

The seller used 4-5 layers of wrapping bubbles to pack the crucible, and there is no way for these fragile crucibles to break. The cap also fits very well and I don't have to find another quartz plate to cover the crucible up. It's overall a great product.

The inner and outer walls of the purchased crucible were crystally clear without any visible dirty spots or marks. The lid that comes with the order fits the crucible very well. It's a very good shopping experience overall, and I would recommend this quartz crucible to my colleagues.

slowly took to 1150c then slowly cooled, and totally shattered. Not high quality quartz

Perfect for my use at 800 FahrenheitCustomer service is a big plus!!