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A High Speed Dry Film Photoresist Stripper

RESISTRIP™ SP (RDZ-1398) is designed to strip certain difficult to remove dry film photoresists quickly, thoroughly and economically. RESISTRIP™ SP (RDZ-1398) is based on a new technology that combines speed with long life giving sustained high performance stripping not seen in previous stripping technology. RESISTRIP™ SP (RDZ-1398) will strip over-plated fine line and space circuit boards completely throughout its stripping life. As with all RD Chemical photoresist strippers, adhesion promoters are thoroughly removed, and the stripped board is oxidation-free and ready for oxide or etching. RESISTRIP™ SP (RDZ-1398) contains inhibitors that prevent redeposition of Tin on the Copper, which can inhibit etching of outer layers. RESISTRIP™ SP (RDZ-1398) will tend to give smaller, but filterable particle sizes. Exact particle size is dependent upon the photoresist being stripped.

Use RESISTRIP™ SP (RDZ-1398) at 10 - 20% by volume.

RESISTRIP™ SP (RDZ-1398) may be used in soak or spray. Use at 120° F, or higher, for best results. Higher temperatures give higher strip rates, but also result in greater digestion of the stripped resist particles. If a defoamer is required, use Defoamer A (RD-28).

A titration procedure is available, but stripper performance is much more affected by pH, than titratable alkalinity. Control is preferably accomplished by monitoring pH, then replenishing to maintain minimum pH.

Steel, titanium or polypropylene are recommended. PVC may be attacked at higher temperatures and concentrations. Quartz heaters may be used.


Exercise caution when handling. RESISTRIP™ SP (RDZ-1398) contains strong alkaline ingredients. Avoid contact with skin and eyes. Wear protective clothing when using. Eye protection (goggles or a full-face shield) is required. Consult Material Safety Data Sheet for further information.

RESISTRIP™ SP (RDZ-1398) may contain dissolved heavy metals and chelates. Dispose of in accordance with Federal, State and local regulations. Contact your RD Chemical representative for further information.


RESISTRIP™ SP (RDZ-1398) is supplied in 55 gallon drums.

RD Chemical Company makes these recommendations in good faith, based on laboratory and field testing. Ultimate responsibility for propriety of use, however, must rest with the purchaser and user. RD Chemical Company recommends thorough testing of its products, before use.

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