CHEMICAL PREPARATION FOR REMOVING SCALE

Brand	Owner	Address	Description
OAKITE DRYCID	CHEMETALL US, INC.	675 CENTRAL AVENUE NEW PROVIDENCE NJ 07974	CHEMICAL PREPARATION FOR REMOVING SCALE FROM METAL;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Disclosed is a semiconductor exposure apparatus which includes a chamber for accommodating therein a main unit of the exposure apparatus, a gas controlling unit for controlling a gas in the chamber, a chemical filter for attracting a chemical substance in a controlling gas, and a dust removing filter for catching a dust particle in a controlling gas, wherein a gas blowing area of the chemical filter is smaller than that of the dust removing filter wherein said chemical filter and said dust removing filter are disposed separately from each other. The chemical filter is mounted obliquely with respect to a direction of flow of a supplied gas. A gas rectifying device is disposed at a gas inlet side of the chemical filter and the dust removing filter. The chemical filter can be a pleat filter, and it is mounted so that the pleat thereof is orthogonal to the direction of flow of the supplied air.