The development times listed on the Cinemot "How to Develop" page for Cinemot Açores differ between Kodak D-76 and Ilford ID-11, and both entries are given for stock solution (1+0) dilution.

The page https://cinemotfilm.com/how-to-develop shows:

• Kodak D-76: 9:30
• Ilford ID-11: 8:00

It is unclear which time is correct and the discrepancy does not appear to be caused by differing dilutions. For practical purposes the mean of both values (8:45) is used here.

1. Cinemot — How to Develop

The development times listed on the Cinemot "How to Develop" page for Cinemot Fado in Kodak D-76 and Ilford ID-11 are inconsistent even though the developers are chemically equivalent.

The page https://cinemotfilm.com/how-to-develop shows:

• Kodak D-76: 14:00
• Ilford ID-11: 7:00

Although D-76 and ID-11 are equivalent, the page lists significantly different times: Kodak D-76 14:00 and Ilford ID-11 7:00. The available information suggests the ID-11 time on the site is given for the stock solution (1+0), while the D-76 time appears to correspond to a 1+1 dilution — i.e., the two entries seem to assume different dilutions.

1. Cinemot — How to Develop

The following table contains a list of developers and their chemically identical or very similar equivalents.

The following table contains a list of films and the respective films with the same or at least very similar characteristics.

Compard and Foma provide tables^1,2 with development times for their R09 developers. Some of the times listed there seem to be inconsistent to the developer Agfa Rodinal (before 2004), which are all known to be the original Rodinal recipe. They differ in film speed for the same development times³.

1. Product Information Sheet: R09 ONE SHOT
2. Developing times of some foreign films in FOMA developers
3. Agfa Rodinal and Rodinal Special Process Times (http://unblinkingeye.com/Articles/Developers/Times-Rodinal/Rodinal.pdf, Dec 2000)

FLIC FILM provides a datasheet for the film processing kit with the FLIC CLASSIC MQ developer. Some entries in this datasheet differ from the KODAK or ILFORD datasheets in the agitation scheme specified (e.g. for ILFORD films). These entries were corrected.

1. Flic Film: Black and White Processing for 1 Litre Kit (Jan 2023)
2. www.ilfordphoto.com (TECHNICAL INFORMATION PERCEPTOL, ID-11 AND MICROPHEN, Jun 2010)
3. Fujifilm Product Information Bulletin Neopan 100 Acros II 135 (Dec 2019)

ARS-IMAGO pro­vi­des a tab­le¹ with de­ve­lop­ment times for its #9 de­ve­lo­per. Some of the times lis­ted there seem to be in­con­sis­tent to the de­ve­lo­per Agfa Rodinal, which are both known to be the ori­gi­nal Rodinal recipe. Showing the same de­ve­lop­ment times, it dif­fers at the agi­ta­tion rhythm² or at the film speed³.

1. ARS-IMAGO #9, Film Developer - High Concentrate (Jan 2022)
2. Ilford FP4+ (box inside)
3. Agfa Rodinal and Rodinal Special Process Times (http://unblinkingeye.com/Articles/Developers/Times-Rodinal/Rodinal.pdf, Dec 2000)

Film Washi pro­vi­des a tab­le¹ with de­ve­lop­ment times for its Washi S film. The dilution for Rodinal lis­ted there seems to be a typo, because it is much to long. I looks more like the time for dilution 1+50.

1. http://filmwashi.com/datasheet/S_en.pdf

Silberra pro­vi­des a tab­le¹ with de­ve­lop­ment times for its Ascorol de­ve­lo­per. Some of the times lis­ted there seem to be in­con­sis­tent: the de­ve­lop­ment time for the film Arista Edu Ultra 400, which is known to be the same as the Fomapan 400 and the Holga 400, dif­fers by one mi­nute.

1. https://silberra.com/chemicals/silberra-special-developers/silberra-ascorol-developer (Jan 2018)

Silberra pro­vi­des a tab­le¹ with de­ve­lop­ment times for its Micro-F de­ve­lo­per. Some of the times lis­ted there seem to be in­con­sis­tent: the de­ve­lop­ment time for the film Arista Edu Ultra 400, which is known to be the same as the Fomapan 400 and the Holga 400, dif­fers by half a mi­nute.

1. https://silberra.com/chemicals/projaviteli/silberra-micro-f (Jan 2018)

Silberra pro­vi­des a tab­le¹ with de­ve­lop­ment times for its RDN-LQ de­ve­lo­per. Some of the times lis­ted there ap­pear to be in­con­sis­tent. This con­cerns the times for the equi­va­lent films:

• AgfaPhoto APX 400 (New 2013) and Kentmere 400,
• Arista EDU Ultra 100 and Fomapan Classic 100,
• Arista EDU Ultra 200 and Fomapan Creative 200 as well as
• Arista EDU Ultra 400 and Fomapan Action 400.

1. https://silberra.com/chemicals/projaviteli/silberra-rdn-lq

According to the data sheet¹ of SPUR Pho­to­che­mie, one should be able to in­fluence the con­trast of the ne­ga­tive by vary­ing the ad­jus­ted film speed, the di­lu­tion of the de­velo­per and the de­velop­ment time. This can current­ly not be map­ped by the app and would lead to in­con­sis­ten­cies in the es­tima­ted de­velop­ment times. There­fore, only the de­velop­ment times of the ta­ble were taken, which leads to a 'nor­mal' ne­ga­tive con­trast. The es­ti­mates of de­velop­ing time cal­cu­la­ted by the app for de­via­ting set­tings should there­fore also pro­duce a 'nor­mal' ne­ga­tive con­trast.

1. Spur Photochemie: Vorläufiges Datenblatt/Preliminary Data Sheet SPUR Speed Major (Sep 2016)

ADOX provides two datasheets for the film ADOX CMS II containing times for developing in Adotech III, one in German¹ and one in English². The two datasheets differ in the specified agitation scheme. While the German datasheet says: “Die erste halbe Minute ist die Dose permanent …, danach jede halbe Minute 1 mal …” (The first half minute ongoing …, than once every half minute …), the English translation shows: “First half minute ongoing than once every minute.”.

After contacting Mirko from ADOX, he wrote me that the agitation scheme of the English version of the datasheet (once per minute) is the correct one.

1. ADOX CMS 20 Hochauflösungsfilm (May 2016)
2. ADOX CMS 20 Ultrahigh-Resolution-Film (August 2016)

Kodak has launched new versions of some films on the market in 2002, 2003 and 2007. In many development charts, even in very well-known, these versions are not distinguished, although their developing times have changed. There are often listed as Plus-X , T-Max 100, 400, 3200 or Tri-X with mixed times for old and new versions of the films. You have to be very careful to find out the correct time. You are safe looking up the times at the Film Development Chart.

References:

1. KODAK PLUS-X Pan and KODAK PLUS-X Pan Professional Films F-8 (Dec 2002)
2. KODAK PROFESSIONAL PLUS-X Film F-4018 (May 2007)
3. KODAK T-MAX Professional Films F-32 (Mar 2002
4. KODAK PROFESSIONAL T-MAX Films F-4016 (Feb 2004)
5. KODAK PROFESSIONAL T-MAX 400 Film F-4043 (Oct 2007)
6. KODAK TRI-X Pan and KODAK TRI-X Pan Professional Films F-9 (Apr 2003)
7. KODAK PROFESSIONAL TRI-X 320 and 400 Films F-4017 (May 2007)

The development times of Uncle Mort’s Homebrew Neg Soup developer are substantially identical to those of the Champion Promicrol. The data sheet of Promicrol¹ and the times at the bottle label of Uncle Mort’s Homebrew² match exactly for 12 of the specified films. The indicated times of Promicrol apply partially for different film speeds (pushs) of the films. At the label of the Homebrew no film speeds are specified for the given developing times. The following table lists the identical development times of the two developers (dilution 1+9, temperature 20 °C/68 °F, agitation 30 s).

The two developers therefore appear to be very similar. The times of Promicrol originate from 2003: The times for the Kodak films therefore apply to the respective predecessor films.
The Promicrol developer allows 1+14 dilution. You can lookup the developing times for this dilution in the Film Development Chart.

1. Champion Promicrol Technical Data Sheet (Apr. 2003)
2. http://www.foto-r3.com/es/uncle-morts-homebrew-neg-soup-1-litro.html

The films Rollei RPX 100 and Rollei RPX 400 were respectively sold under the same name with different recipes. This is confirmed by the different developing times of different data sheets^1,2,3,4. In December 2013 these films were given a new packaging: Black background with green respectively red label. At the same time the films AgfaPhoto APX 100 and AgfaPhoto APX 400 were placed on the market. The development times of the Rollei RPX 100/400 films with old packaging were identical or at least very similar to those of AgfaPhoto APX 100/400 and Kentmere 100/400 .

References:

1. MACO Photo Products, Rollei RPX 100 product sheet (Nov 2010)
2. Rollei, Technisches Datenblatt Rollei RPX 100 (Apr 2015)
3. MACO Photo Products, Rollei RPX 400 product sheet (Nov 2010)
4. Rollei, Technisches Datenblatt Rollei RPX 400 (Apr 2015)

Tetenal provides a datasheet¹ with developing times for its own Paranol S developer. Some of the times listed there are surprising: Tetenal stated that this developer is ‘compatible’ with AGFA Rodinal, but the developing times differ very much, especially for dilution 1+50. For our database we assume that these developers are not equivalent.

1. Tetenal Product Information Sheet: Paranol S (May 2015)
2. FOMA Bohemia Ltd.: Fomapan Classic 100 Developing Instructions
3. FOMA Bohemia Ltd.: Fomapan Creative 200 Developing Instructions
4. FOMA Bohemia Ltd.: Fomapan Action 400 Developing Instructions
5. Ilford Film Processing Chart (Apr 2015)
6. MACO Photo Products, Rollei Retro 400s Entwicklungszeitentabelle
7. MACO Photo Products, Rollei RPX 100 product sheet
8. MACO Photo Products, Rollei RPX 400 product sheet
9. MACO Photo Products, Rollei Superpan 200 product sheet

The development chart of Protopan 400 lists for the developer AGFA Studional (AGFA Studio Liquid) times at a dilution of 1+30. This is a rather atypical dilution for this developer and is considered to be a typo. Instead, it should probably be 1+31.

References:

1. Foto-R3 Protopan 400 Professional Tabla de revelado (July 2012, http://www.foto-r3.com/files/PROTOPAN_TIEMPOS_REVELADO_0.pdf)