Tutorial: Tetenal Colortec E6 3-bath Kit - Develop your own color slides


This is a tutorial for the adventurous Lomographers, for those brave enough to do their own B&W and C-41 work but lacking the confidence to move onto E6. Fear no more! I am an enthusiastic home developer, just like the rest of you, I am not a chemical lab wizard! So if I can pull this off, so can the rest of you. Take a deep breath, relax, and read on. By the end of this article I hope you’ll have mustered the courage to give it a go yourselves!

Credits: sandravo

About a year ago, I discovered the virtues of doing my own film development. Just like so many, I started out with a single B&W film in my kitchen sink. Developing turned out to be fun and fairly easy, and pretty soon I was ready to move on to also do my own C-41 work. For economic reasons but mostly because ease of use, I settled on the Rollei Digibase C-41 kit. Over the last 12 months, I have developed close to 150 films with this kit, and each and every one of them has come out perfect! If you want to read up on how to use this kit, you can find my detailed tutorial here. If however you have already mastered C-41 processing and are more interested in E6 developing, then stay with me and read on.

Credits: sandravo

Before setting out on this new adventure I did what I always do: search the entire internet! Now, Google has its advantages, but it can also work against you. It is the perfect source to look for any piece of information, but while looking for that information you’ll also come across all sorts of stories you don’t want to know about. The same happened to me here: for every report I found saying E6 was perfectly possible in your kitchen sink, I found another one claiming you’d have to be a fool to do your own E6 and that it should be left to professionals. As usual, the truth lies somewhere in the middle.

Based on what I could find online, I decided I would chose the Tetenal Colortec E6 3-bath kit. This kit is reported to have a decent shelf life, and if you buy the bigger 5L kit it is by far the more economical choice (costs 90€ for 5L lit, good for 60 rolls). The box arrived quickly, holding 6 bottles of concentrates and a small instruction booklet in 10 languages. Other than this, I used only the hardware I already had available from my B&W/C-41 developing. So if you have a working setup for film developing, nothing else needs to be bought to get started.

1. What you’ll need

  • daylight developing tank
  • dark plastic bottles (e.g. Jobo bottles)
  • Tetenal Colortec E6 3-bath kit
  • measuring cylinders: 500ml and 100ml
  • thermometer
  • funnel
  • large cup for scooping water
  • bucket
  • basin
  • access to hot tap water

2. Mixing chemicals

Given the name of the kit, Tetenal E6 3-bath kit, you would expect 3 baths, while in reality there is a 4th bath. Don’t worry, it comes in the box. For this process you will need to mix up a first developer, color developer, blix and stabilizer. The instructions booklet clearly indicates how this needs to be done. Since the working solutions can only be kept for a few weeks, and also because I mainly shoot 120 film, I decided I would make 500ml working solutions.

Solution 1: First Developer – FD

400ml water + 100ml FD concentrate

Solution 2: Color Developer – CD

340ml water + 100ml CD part I + 60ml CD part II

Editor’s note: Updated according to Tetenal’s new Colortec E-6 Kit for 2.5 Liter baths
300ml water + 100ml CD part I + 100ml CD part II

Solution 3: Bleach+Fix – BX

300ml water + 100ml BX part I + 100ml BX part II

Solution 4: Stabilizer – STAB

450ml water + 50ml STAB concentrate

Editor’s note: Updated according to Tetenal’s new Colortec E-6 Kit for 2.5 Liter baths
450ml water + 100ml STAB concentrate

3. Setting up a functioning work space

The most important part of getting your E6 development right is working at the absolute correct temperature. Make no mistake about that, do not assume it wont make too much of a difference, because it will! Getting the liquids at the correct temperature is easy if you have some kind of warming bath at your disposal, but it can also be done with a bucket, a basin, running water and a thermometer. You just need patience and take your time to get things right BEFORE you start.

This is what my setup looks like, left to right:

  • a bucket containing water at 38°C for all the washing steps. If the temperature drops, just open the hot water tap.
  • a funnel for pouring working solutions in the bottles after use
  • a large measuring cup for scooping the washing water from the bucket into the tank
  • a freely accessible mixing tap and a sink to pour away used washing water
  • plastic basin with warm water, serving as a water bath to warm the tank and solutions 1-2-3.

Before starting the development process, temperature is adjusted so that the solutions inside the bottles are at 38°C. The water in the basin is kept at +/-39°C to allow for the cooling that occurs every time you lift out the tank or a bottle. If the temperature in the tank rises too high during development, just lift it out of the water bath. If temperature drops too low, pour in some hot water. It is important you monitor the temperature as accurately as possible, especially during the the FD and CD developing stages.

4. The actual developing process in Tetenal E6

The manual gives a nice overview of the processing times and temperatures. If you look closely, you’ll see that FD, CD and BX times change when more film has been processed in the working solution. Apparently E6 chemicals get exhausted really fast, so the increase in developing time is something that cannot be overlooked! The stabilizing time remains the same, regardless of how many rolls have gone through. If you look closely again, this time at the temperature column, you’ll see that the further you are in the process, the more latitude you have when it comes to the temperature range.

This is the schedule I have been following:

0 – Pre-heat tank
Temp: 37,5-38,0°C
Time: 5min

I fill my tank with water for this step, but I have read many reports claiming the pre-heat should be done dry. I have had great results, so I will keep doing as I have, but the choice is yours.

1 – First Developer – FD
Temp: 37,5-38,0°C
Time: rolls 1-2: 6min15, rolls 3-4: 6min30, rolls 5-6: 6min45

For the FD, CD and BX steps, the manual indicates that you should agitate continuously for the first 15 seconds and then once every 15 seconds. It does not indicate whether this should be done by inverting the tank or by use of the agitation-swirl-stick thingy. If you would chose inversions, you would have to take the tank out of the water bath and move it around in cold air, causing a reasonable temperature drop. So because of the temperature sensitivity of the entire process, I opted for the swirl-stick and it appears to be working fine.

2 – Washing
Temp: 37,2-38,3°C
Time: 2min

According to the manual you need to wash under running tap water, at exactly the right temperature. Since my tap doesn’t have a thermostat, that is not an option. The next best thing is do the washing by filling the tank with water, keep it moving for 30sec, dump the water, refill the tank and repeat the process. For a washing step of 2 minutes I repeat this 4 times, making sure I have 2 minutes of actual washing time (so the time it takes for dumping/refilling is not counted as washing.)

3 – Color Developer – CD
Temp: 37,2-38,3°C
Time: rolls 1-2: 6min, rolls 3-4: 7min, rolls 5-6: 8min

Same agitation scheme as FD.

4 – Washing
Temp: 33,3-38,9°C
Time: 2min

Same washing scheme as before.

5 – Bleach-Fix – BX
Temp: 33,3-38,9°C
Time: rolls 1-2: 6min, rolls 3-4: 7min, rolls 5-6: 8min

Same agitation scheme as FD.

6 – Washing
Temp: 33,3-38,9°C
Time: 4min

Same washing scheme as before, but repeat the 30 sec washes up to a total of 4min, 8 cycles in total.

7 – Stabilizer – STAB
Temp: 20-25°C
Time: 1min

This is another point of discussion. Manual states: stabilizing is done outside the tank. What they mean to say is: stabilizing should be done outside the tank AND OFF THE REEL. The reason they say this is that you can have a build-up of stabilizer on all your plastics over time. This could cause the reels to get sticky and complicate loading your film. However, I have experienced no such issues. I am just very careful to give everything a good rinse with hot water, making sure the reels are never left to dry when still covered in stabilizer. I prefer doing this on reel as working with unspooled film is a hassle, but the choice is yours.

And that’s it, you’re done! You can now take a deep breath, open your tank and hang your film to dry. This is the perfect time to have a relaxing drink, kick your feet up, and enjoy that feeling of victory!

Enjoy these slides I produced with my first couple of tries!

Credits: sandravo

written by sandravo on 2014-05-29 #gear #tutorials #film #diy #slide #tutorial #e6 #tipster #development #develop #tetenal #kitchen-sink


  1. hervinsyah
    hervinsyah ·

    I have look a people who failed when he process E6 of Fuji Sensia expired 1997, so my question is should we process E6 for fresh slide film only?

  2. sandravo
    sandravo ·

    @hervinsyah All slide film I have processed so far was expired, and they all came out fine: Fuji Provia, Fuji Velvia, Fuji Astia, Kodak Ektachrome E200 and Ektachrome 100plus. No reason expired sensia wouldn't work.

  3. hervinsyah
    hervinsyah ·

    @sandravo ok, btw here is the link e6 process result of the people that I'm talking about www.facebook.com/photo.php?fbid=10201017624883396&set=p…

  4. simonh82
    simonh82 ·

    Great article, thanks for sharing. I do C41 and B&W but not E6 currently. How long do the concentrates last if they are not mixed up?

  5. sandravo
    sandravo ·

    @simonh82 - I hope this will make you join the E6- club ;-). According to the manual concentrates last for 24 weeks after opening and partial liquid removal. They do advise to use protectan (heavy gas that expells all oxygen from the bottle, sold under tetenal brand). However, according to a long time user, the cincentrates will last a lot longer then 6 months, even without the protectan. I bought the 5litre kit, so I am nowhere near finished, but I'm planning to test the limits ;-)

  6. jabcam
    jabcam ·

    E-6 has the colours all right:) My first mix of E-6 was about a year ago, and it still works today, so aging of the chemicals seems not to be a problem. They were stored in PET-bottles at room temperature.

  7. machineaveugle
    machineaveugle ·

    Hi, thanks for those advices. I'm glad to confirm your indications are very useful! I began to develop E6 : Kodachrome E100 (expired in 2009) & Some Velvia (expired in 2005) too. Soon I will shot some Astia film expired in 2000... You can visit my photo stream in Flickr to see some result: www.flickr.com/photos/martingomezphotos/ ; Best you all!

  8. bryanbecker
    bryanbecker ·

    Nice post, it helped me get through first experience Proccessing film. The results so far so good. I have 2 questions. 1) I just leave the stabilizer on film while it dries? No need to wash it off? 2) I mixed 500ml to do one roll. I want to try with 2 rolls next does anyone know if I can just mix a new batch of 500ml and add it the existing 500ml? I mixed the existing only yesterday.

  9. mrpj_photo
    mrpj_photo ·

    @hervinsyah Hmm, that was my result of learning Tetenal E-6 processing...I didn't know what made the result so green like that...maybe due to the film, or chemical mixture error...that was 3rd slide I've processed, the next slide would be processed soon once I have a plastic tank...the 1st till the 3rd slide processed with a metal tank, which is still very hard for me to use... Haha

  10. edwardolive
    edwardolive ·

    I do c41 which is easy if you have a fishtank heater and a plastic bucket but E-6 looks very tricky for me I just xpro lazy everything

  11. edwardolive
    edwardolive ·

    As regards the stabiliser question it's just really like Photo-flo anti humectant that means it stops the droplets forming on the film. In c41 I squeegee excess and dry. To wash off would stop it working and you get drop marks on the film

  12. mjones41
    mjones41 ·

    This article is a few years old now the latest tentenal kits don't have a separate stabilizer so they are a true 3 bath process. Even easier :)

  13. mjones41
    mjones41 ·

    @mjones41 my mistake it's the unicolor kit that has no stabiliser, the tentenal still does

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