Set for handling black and white prints

Attention! When working with chemical reagents, strictly observe precautions! Be sure to use protective gloves. Do not allow chemicals to come into contact with food and hygiene products. Do not allow the solutions to get into your eyes! In case of contact with the skin, rinse immediately with plenty of water.

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What's in the set

• stop bath (conc. 250 ml)
• bleach (conc. 250 ml)
• washing (end 250 ml)
• instructions

Each concentrate is designed for the preparation of 1 liter of working solution. The developer for photo paper is not included in the set!

Expiration date

Store in a cool, dry place in a tightly closed container filled under the throat. Keep away from the light. Concentrates are stored for at least 2 years, working solutions - for at least 1 year, partially used solutions - up to 1 month. The limit of use is 30-40 sheets of 18x24 per 1 liter.

INSTRUCTIONS

1. You will need at least 5 cuvettes. For developer, stop bath, bleach, washing from kit and water.

2. Concentrates are diluted with 1+3 water (up to 1 liter).

3. Initially, the work is carried out under red laboratory lighting.

4. Process the exposed sheet in any normal or contrast developer for photo paper (not included in the kit). The print must be overexposed by 1-1.5 steps!

5. Rinse the sheet in running water for 1-2 minutes. Don't forget, when the process is reversed, the fingerprint is not fixed!

6. Place the sheet in the stop bath for 60 seconds. Continuously shake the cuvette, the solution should completely cover the print.

7. Further work is carried out under normal lighting. It is important.

8. Rinse the sheet in running water for 1-2 minutes.

9. Treat in bleach solution for 60 seconds. with continuous rocking of the cuvette. The image will disappear.

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Attention! The bleaching solution contains potassium bichromate! Toxic. Work with gloves, use tweezers for prints. Try not to allow spillage and splashing of the solution. In case of contact with the skin, rinse with plenty of soap and water.

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10. Rinse the print in running water until the yellow color disappears. For plastic, 1-2 minutes is enough, for cardboard it will take 5-10 minutes.

11. Place the sheet in a bath with rinsing for 3-4 minutes. The washing solution will completely remove the bleach residue.

12. Rinse the sheet in running water for 5 minutes.

13. Re-develop the print. You can use the same solution as for the first development. Develop until the print stops darkening. If the development is completely completed, fixation is not required.

14. This is followed by a final washing in running water for 10 minutes. (for plastic) or 20-30 min. (for cardboard).