**** European Shipping ****
We are closed from 29th June until 4th July. Goods ordered will ship on Monday 5th dependent upon stock levels.
All orders are shipped (DDU) Delivered Duty Unpaid and means the receiver/customer will get contacted by customs once their shipment arrives, and will have to settle any charges in order for customs to release the shipment and have it delivered.

Please note there is a 5 to 6 week waiting list from placing Furnace and Tong orders until their dispatch due to demand. Store closures periods do not count as part of this wait time.

Bentonite Clay 750 Grams has been added to your Cart

CT4 Deoxidising (Degassing)Tubes for copper based alloys  (The main photograph shows 9 tubes the price is per tube)

Each Tube (Sufficient for 50 to100kg of  copper alloy)

Deoxidising Tubes are copper tubes containing a high grade deoxidant, pre-packed in measured amounts, for treating copper based alloys. Theycontain deoxidants in granular form which enable the deoxidant to be immediately dissolved by the melt. Although phosphor-copper cake is a satisfactory deoxidant, it is not the best or the cheapest way of adding phosphorus because some is volatilised and some lost within the dross while the cake slowly melts. It is also difficult to add in precise amounts, which is essential if gas-free metal is to be obtained. CT4 deoxiding tubes should not be used for treating high conductivity copper. Calcium Boride, or Lithium based deoxidants should be used for this application.

For smaller crucibles the tubes can be opened and the contents divided on a pro rata basis for plunging into the melt. I use copper plumbing end feed end caps which can be seen in the photo

Health and Safety  

Material Safety Data Sheet Available