Lucky industrial x-ray film L7 is produced by China Lucky Film Corp. It is designed in accordance with advanced standard. A series of new materials and technology be used from emulsion-making to coating. It is an ideal film for industrial non-destructive inspection photographing.

FEATURES AND USAGES
Lucky industrial x-ray film L7 is double coated on bluish polyester base. It is high speed with small grain and high contrast. It has perfect ability to find the defect exactly because of its excellent structure of emulsion-grain and coating-layer. It sis widely used in non-destructive x-ray inspection for parts, components, shaped materials or welding seams made of ferrous, non-ferrous metals and their alloys or other materials with low attenuation coefficient.

SAFE ILLUMINATION
This film can be processed and inspected under dark red safelight filter of Lucky LZ-2 or Kodak No-2 or other equivalent filters with transmitting range over 630nm. A 15W safe-lamp should keep 1.2 meter away for the film.

PROCESSING
Lucky industrial x-ray film L7 is compatible with various processing machines and it can be processed by hand in normal temperature as the follow conditions.

SIZE AND PACKAGE

It can be available in other sizes and quantities of packing on request.

STORAGE
Unexposed film should be kept in original packages and stored in places where should be clean, no dust, free from ammonia, hydro sulfuric gases and penetrating radiation. The film is adversely affected by heart and humidity. The recommendatory storage temperature is bellow 21°C and humidity bellow 65%RH. For unsealed film, the ideal humidity is from 30%-50%RH.
The film packages should be placed on edge to avoid pressure marking the film. 
The film storied at low temperature should be conditioned at room temperature for more than 4 hours before opening the package for using in order to prevent condensation on film surface and degradation of the film.
The photographic properties may change during age, therefore the film should be used in guaranty period. The exposed film should be processed as soon as possible. 
The film should be handled carefully to avoid strains caused by pressure, creasing, buckling and friction. Highly attention must be pay not to touch or grasp the film with wet hands before and after processing.
Characteristic Curves