HC-110 Helper

C-41 Helper

Reciprocity Helper

 The Unofficial HC-110 Helper

a web application for film development with Kodak HC-110

This app uses formulas specifically tailored to Kodak HC-110 developer (syrup) and calculates development times in relation to temperature, Push/Pull times, as well as basic mixing volumes for the different dilutions for convenient use. The design principle behind it was to make a digitally useable, dynamic HC-110 botle label. 

The values calculated here are not set in stone, but they give a good starting point and should get you into the ballpark of a good development that works for you. For repeatable results in line with data used for this tool, only use distilled or demineralized water to mix HC-110 working solution!  The Push/Pull Calculator is a reference to use if in doubt. It works best with films like Ilford HP5+, Kodak TriX, Tmax 100 and 400. For High-Speed Films like Tmax P3200 and Delta 3200 use the guidelines given in the respective datasheets. Likewise, for ultra slow, high contrast films like Adox HR or other microfilms, either use the given times or if in doubt, process in HC-110 F for 30 minutes semi-stand with 30s initial agitation and 30s agitation after 15 minutes for pictorial contrast of around 0.6 to 0.7.

V.1.2, Released on Dec 7th 2020. 


If you want to download the app for your Android or Apple smartphone, just scroll down and click on the button which will forward you to the respective app store. 

you can download the app and use it on your smartphone, too. It runs both on IOS and Android. Additionally, downloading the app will relieve traffic from this site and make it a bit faster again…


If you feel generous today, and like the app(s) provided by me here for free and wish to support further development, you can support this effort by making a small contribution via the PayPal Donate button below. I’m not doing this for the money, but I’m happy for anything, be it a cup of coffee, or a roll of film. 


Disclaimer:  This is a free tool provided for your convenience and is no guarantee to a perfect development. For best results, use distilled water, process and wash at a constant temperature to avoid reticulation and act according to lab safety guidelines. This web app is in no way affiliated to or endorsed by both the Eastman Kodak Company and Kodak Alaris. 


V.1.0, Released on Dec 6th 2020 | Initial Release
V.1.1, Released on Dec 7th 2020 | Bug with Push/Pull breaking points fixed.
V.1.2, Released on Dec 8th 2020 | Added Ilford LC29 Calculator


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