InstaPurge^® Purging Compound is available as a filled or unfilled product. The filler gives the product additional "scrubbing" effectiveness for difficult changeovers, but extensive use over a long period may cause wear in soft metal finishes.

NOVACHEM recommends use of the unfilled grade where:

• the more agressive nature of the filled material may cause concern;
• the equipment has narrow passages (less than 0.040in. (1.0mm)) that might become blocked; or
• the next production resin is of such low viscosity (e.g., flexible PVC, LDPE, etc.) that removal of a filled cleaning compound could be difficult.

NOVACHEM does NOT recommend use of the filled grade for hot manifolds.

NOVACHEM does NOT recommend use of the filled grade for extrusion equipment unless the die is removed (along with any screens or filters).