D-100 Developer (nonaqueous): Approved MIL-1-25135/AMS-2644 for both Type I and II penetrants. (Also, approved Groups I through VII.) Consists of refined white particles suspended in isoprpanol alcohol, to give enhanced sensitivity for locating tight flaws. Lays on surface in thinner, more uniform coat. Flash point about 60°F. Apply by spraying. Meets all applicable codes and standards.
D-106 Developer (nonaqueous): Approved MIL-1-25135-E/AMS-2644 for Type I and Type II penetrants. Consists of refined white particles suspended in acetone, to give enhanced sensitivity for locating tight flaws. Lays on surface in thinner, more uniform coat. Apply by spraying. Meets all applicable codes and standards.
D-350 HI-TEMP* Developer: Nonaqueous. Hi-Temp D-350 is used with Hi-Temp KO-17 Penetrant and Hi-Temp KO-19 Remover.Consists of refined white particles suspended in nonchlorinated, volatile solvent (alcohol). Available only in spray cans. Performs on elevated temperature surfaces; 200°F to 350°F. At lower temperatures D-350 dries more slowly and adheres quickly, requiring greater effort to remove upon completion of inspection process. To remove, wipe with water dampened toweling. Approved Group I and III under MIL-1-25135-C.
Dry Powder D-90G Developer: Approved "form a." Low sulfur, low sodium and low halogen. It amplifies the location of cracks, pores and similar flaws by multiplying fluorescent brillance. It also assists re-bleed back to the part surface and stabilizes indications.
D-113G.1 Developer (water soluble): Approved "form b." Low sulfur and low halogen. A powder which dissolves completely in water, typically one pound per gallon. After application and drying, it forms a uniform, thin white coat on the surface. Normally, only used with nonwater-washable penetrants.
D-110A.1 Developer-approved "form c" developer. Low sulfur and low halogen. A powder typically mixed with water at one pound per gallon to form a suspension. After application and drying, D-110A.1 leaves a uniform, thin, white coating on the surface. Exercise care in choosing the proper circulating equipment for keeping developer particles in suspension.
Special Note: In accordance with MIL-1-25135/AMS-2fj44, MIL-STD-6866, and ASTM E-1417, developers are outside of the "family," or same brand, concept. All Sherwin developers may be used with any QPL-approved penetrant systems.