Test tube silicone stopper

1.Constructed of a cast iron support ring with a gray baked enamel
finish to give it chemical resistance.
2.Making it an excellent means of supporting smaller items over a
burner, such as crucibles, evaporating dishes, and beakers.
3.The plated steel legs slope outward from the ring, giving it added
stability.

1.Moulded in white polypropy lene. 2.Accept 44 pipittes of up to 15mm. 3.Very stable with 30mm diameter base.

1.This instrument can be used with alcohol lamp, asbestos nets.
2.The above first put asbestos network, then add beakers, flasks, etc.
3.The following can be put alcohol lamp for heating suitable for
teaching physics and chemistry, laboratory, and other fields.

With grid tops, provide uniform heat with no back flashes. One piece nickel plated venturi tube to thoroughly mix air and gas.