Borda Medical Technology Co. Ltd

Micro-photography (12), CRO Pharmaceutical Contract Research Outsourcing blog Community, marketplace, social network

1. To enlarge the choice of paper trial
(1) zoom in the first film to accurately identify the density of the contrast to the selection of suitable amplification paper and photographic paper. And then adjust as needed to enlarge size of the location of the fuselage.
(2) to enlarge the matching is also important when the paper. Made to enlarge the present paper is divided into 4: 1 (performance soft); 2 (soft or neutral); 3 (hard); 4 (hard). Film contrast is generally smaller, the more rigid selection of amplification of paper, photos can be moderate, such as the film contrast is too large, then the choice of softening of the larger paper, and can be moderate contrast photos. No. 3, amplification of paper used.
(3) selected larger cut piece of paper after paper for a number of different exposure time and the paper size of the test release in order to determine amplification of a formal paper size and exposure time. Zooming in, the paper should be slightly larger than in the larger sizes. Exposure time is best to use timers. clinical

2. Notes on the use of larger aircraft Medical
(1) film and photosensitive paper plane must be parallel with the lens, the center of the film must be the camera's optical axis.
(2) film should be placed in the central part of larger machines, and used black paper to block up the film around the light transmission area.
(3) to open big when focusing lens aperture, the thickness used for imaging white should be used to enlarge the thickness of the same paper. Focus on the clear aperture will shrink, so the screen can be central and surrounded by a certain clarity.
(4) in the amplification process of exposure to larger machines can not be shocked.
(5) large quantities larger photo, power supply should be equipped with a regulator, and the use of electronic automatic exposure device exposure.
(6) to enlarge machine inside the lens and the condenser must be kept clean, without dust.

3. To enlarge the photo imaging experimental
Schering Health Care, Ltd. wash basin or basin with enamel carried out side by side put away three basins, followed by about 20 â"ƒ into the remarkable, stop, fixer.
1) imaging obtained after exposure to enlarge paper, the film with face down, immersed in developing solution with a clip rather than pressing the photo on the back, so completely immersed in developing solution in the emulsion film, and continue to drag the larger paper.
2) Stop all the minor parts to be substantially evenly apparent later washed out compared to enlarge paper folder, moved to stop obvious solution, rinsing 10 ~ 20s bell.
3) The fixing and then moved into fixer for about 15min.
4) Rinse and then placed in the water to fully rinse, about 1 hour.
5) Remove from the water polishing the final amplification of paper, flat on the polishing plate, image facing glazing panels, on the mechanical and electrical heater on the dried polish, photos, automatic glue down.
6) The store re-use knife cut the edge of the photo Qi, registration number, bagging or the installation of backup copies stored.

4. Photo identification magnification clinical experimental
Schein Pharmaceutical, Inc. Photos are available on the object-image magnification of the two kinds of methods to determine:
(1) photo of the physical image magnification = magnification micrograph magnification Ã- Zoom machine.
(2) in the microscopic photography, the micrometer on the loading platform of the same samples using a multiple shooting shooting ruler, and then as the sample film on the same plane as the zoom zoom, washing out the photos, using photos of rulers may be value of the photo directly to the sample size.