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Tetenal
Professional
PK RA-4 Instructions
Application:
Tetenal Professional PK RA-4 is used for processing enlargements from color negatives on RA-4 papers such as Kodak Supra, Ultra and Portra, Fuji Supra FA and other RA-4 compatible papers. Tetenal Professional PK RA-4 may be used in roller transport machines, Nova slot processors and JOBO rotary processors.
Mixing instructions:
Color Developer:
| Water | Part #1 | Part # 2 | = Working Solution |
| 900 ml | 50 ml | 50 ml | 1 Liter |
| 4500 ml | 250 ml | 250 ml | 5 Liters |
| ( 18 parts) | (1 part) | (1 part) | = Total volume 20 parts |
Bleach Fix:
Water Part #1 Part # 2 = Working Solution 800 ml 100 ml 100 ml 1 Liter 4000 ml 500 ml 500 ml 5 Liters ( 8 parts) (1 part) (1 part) = Total volume 10 parts
Keeping Properties:
After the bottles have been open they should be kept tightly sealed in the original bottles. Use of Tetenal Protectan Spray (Part # 109556) will help extend the life of the solutions up to six months.
Fresh working solutions kept in brimful and tightly capped glass or PVC bottles will last approximately 3 months, while 50 % exhausted solutions may last up to 2 months.
Yield:
Each liter can process up to 2 square meters of paper (approximately 38 8x10 prints).
Notes on roller transport machines:
- For the final wash within the roller transport processor, please follow the manufactures instructions.
- For the final wash out side the processor, please refer to the wash times for the rotary processor instructions.
- Prints may be stabilized using Tetenal's Super Stabilizer (Part # 109326) instead of a final wash.
Make Throughput time
per tankTransport
SpeedColor Developer
TemperatureBleach-Fix
TemperatureFujimoto 51 45 Seconds 347 mm 35ºC / 95ºF 35ºC / 95ºF Fujimoto 31 45 Seconds 280 mm 35ºC / 95ºF 35ºC / 95ºF Durst Printo 45 Seconds 60 RPM 35ºC / 95ºF 35ºC / 95ºF Thermaphot
ACP 4045 Seconds 35ºC / 95ºF 35ºC / 95ºF
For Thermaphot RCP 40 VS and Metoform 5040 a 3% to 5% acetic acid stop bath (not included with the kit) is required between the developer and Bleach-Fix.
Rotary Processing in Drums:
General Instructions
- Set the processor's speed of rotation specified for paper. For JOBO CPP-2 and CPA-2 using 2800 series drums set the P speed. For CPE-2 Plus use the 75 RPM speed. For the CPE-2 use speed 2.
- It is important to maintain constant time and temperature for consistent results. For the temperature for Bleach-Fix, fluctuations of +/- 3 ºC /5.4 ºF or longer times will not affect will have not effect on the final print.
- Process times given in this table cover the period of time from when you first pour the chemical in, until you pour the second chemical or water in to the unit.
- Follow the drum manufacture's recommendations on minimum filling quantities.
Temperature 35ºC / 95ºF Pre-rinse with water 1 Minute Color Developer 1 Minute Stop Bath * 30 Seconds Wash 30 Seconds Bleach-Fix 1 Minute Wash 4 x 30 Seconds * Note: A 2% acetic acid stop bath (not included with the kit) is required between the developer and the first wash.
Rotary Processing with the Jobo Autolabs at 38ºC / 100ºF
The process temperature of 38ºC / 100ºF allows you to switch between C-41, E-6 and Professional PK RA-4 processes without having to change the temperature of the water bath. However the short development times may cause uneven development in larger(20X24) prints.
Temperature 38ºC / 100ºF Pre-rinse with water(at 38ºC / 100ºF) 1 Minute Color Developer 45 Seconds Stop Bath* 30 Seconds Wash 30 Seconds Bleach-Fix 45 Seconds Wash 2 Minutes * Note: A 2% acetic acid stop bath (not included with the kit) is required between the developer and the first wash.
Slot and Tank Processors ( JOBO DuoLab and Nova slot processors)
Temperature 35ºC / 95ºF 30ºC / 86ºF** Color Developer 45 Seconds 1 Minutes 20Seconds Stop Bath* 15 Seconds 15 Seconds Bleach-Fix 45 Seconds 1 Minutes Wash 2 Minutes 2 Minutes
* For processing at 35ºC a stop bath must be used.
** For the 30ºC process it is possible to omit the stop bath and add 10ml (60%) acetic acid to each liter of bleach-fix.
For Nova processors gently stir the solutions in the Nova slots if they have not been used in the last 15 minutes, to make the temperature even throughout the tanks
Take the paper out of the solution 5 seconds before the end of the developing time to allow the paper to drain. Agitate the paper vigorously in the stop and bleach fix for the first 10 seconds.
Back to TopIf you have any questions, contact us utilizing one of the following methods:
Equipment or Processing Questions:
- Phone: Customer Service Department (734) 205-9421
e-mail: tech@jobo-usa.com
Repair Questions:
- Phone: Repair Department (734) 205-9420
- e-mail: repair@jobo-usa.com
JOBO Contacts
- Telephone (734) 677-6989
- Fax: (734) 677-6963
- Postal address
- P.O. Box 3721, Ann Arbor, MI 48106
- Shipping Address
- 4401 Varsity Drive, Suite D, Ann Arbor, MI 48108
- Electronic mail
- Sales: sales@jobo-usa.com
- Equipment & Processing Questions: tech@jobo-usa.com
Repair Information: repair@jobo-usa.com - Shipping or Billing Questions: help@jobo-usa.com
Webmaster: webmaster@jobo-usa.com
Send mail to webmaster@jobo-usa.com with questions or comments about this web site. Copyright © 1997-2005 JOBO Fototechnic, Inc. All rights reserved. Information in this document is subject to change without notice. Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders. Copyright to all of the photographs displayed on this site is owned by each of the photographers. You may not sell, publish, license or otherwise distribute any photographs without the written permission of the photographer.
This page last updated on 03/20/02