NDT supplies and accessories are components, ancillary equipment, standards, and consumable materials used in non-destructive testing (NDT). Ancillary equipment includes magnetizers, field indicators, dosimeters, flaw counters, immersion tanks, and darkroom equipment. Standards provide flaw, conductivity, densitometer, hardness, radiographic film and thickness references. Consumables include cleaners, developers, penetrants, dyes, and powders. Specialized NDT supplies and accessories are used with fluorescent penetrant inspection (FPI), dye penetrant testing, magnetic particle inspection, and radiographic or X-ray inspection. General NDT supplies and accessories include alloy identifiers, spot test kits, cables and adaptors, descalers and pickles, flaw markers, holders and clamps, illuminators and light meters, and magnifiers and mirrors. Commonly used items also include tanks and stations, powder dispensers, ultrasonic (UT) compounds, ultraviolet (UV) lamps, scanners and pipeline crawlers, and particle filtration and chemical recovery systems.