Photomaterials
Emulsions for Spectrum Analysis
PFN-01T (or GEOLA-1S) material is successfully applied for measurement of precious metals density in many precious metals refineries. PFN-01T photographic plates can as well be used for some other technical surveys photographic applications.
PFN-01T plates are known for having similar or better characteristics to photographic plates, produced by some other manufacturers - Ilford, Agfa, Kodak, ORWO, and when used for spectral analyzing gives superior results.
Special features
• Antihalation backing;
• Coarse Granularity;
• Contrast: 1,7-2,1;
• Typical resolving power: 100 lines per millimeter;
• Isoorthochromatic Sensitivity: up to 580 nm;
• Silver concentration: 6.5±0.2 g/sqm.
Technical specifications
| Contrast | 1,7 – 2,1 |
| Optical density | More than 3,00 |
| Fog Density | Less than 0,12 |
| Optical sensitization maximum | 560 nm |
| Spectral sensitization edge | 580 nm |
| Resolving Power | 70-100 lines per millimeter |
| Strength of Swelled Emulsion Layer after chemical processing (grams) | 200-500 gr. |
| Temperature of emulsion layer deformation | >45 degrees of Celsius |
| Emulsion layer adhesion after processing | A-D |
Processing
Any developer that works with such plates as KODAK Spectrum Analysis Glass Plate No.1, works well with PFN-01Tas well (Such as, for example, Kodak D-19 developer)
| Name of Operation | Time of operation | Temperature of Solution, degrees of Celsius |
|---|---|---|
| Exposure | As needed | |
| Development | 4 – 6 min. | 20,0+-0,3 |
| Stop Bath | 1 – 2 min. | 20,0+-0,3 |
| Fixing | 15 – 20 min. | 20,0+-0,3 |
| Washing | 30 – 35 min. in rinsing water | 18+-2 |
| Drying | 40 – 60 min. | 20,0+-5 |
Handling and storage recommendations
• Storage room temperature: 20±4 degrees of Celsius
• Storage room humidity: 65±15%
• Life time: 18 months
It is recommended to process exposed plates as soon as possible. Plates should be unsealed and processed at indirect non-actinic lighting and with use of dark-red light filter that has transmission zone of 600 nm and above.
Standard sizes of the plates are 51x254mm and 102x254mm, however other size plates are available on request. Thickness of glass is 2mm +-0,2mm.