DevCalc

Downloads and caches data from https://www.digitaltruth.com/devchart.php.

Allows you to quickly lookup/calculate developing times/notes/volumes for a given developer and film stock combination.

Also supports mixing chemicals by weight if you specify the density of a given chemical.

Usage

List all developers

devcalc mdc list developers

List all film stocks

devcalc mdc list stocks

Get developing info for rodinal and kentmere film stocks

devcalc mdc get rodinal 'kent*'

    50) kentmere100 1+50 20.0C [135: 9m] [120: 9m]
   100) kentmere100 1+25 20.0C [135: 9m] [120: 9m]
   100) kentmere100 1+50 20.0C [135: 15m] [120: 15m]
   200) kentmere100 1+50 20.0C [135: 20m] [120: 20m]
        Agitation: continuous first 30 secs, then 1-2 inversions per min.
   800) kentmere100 1+100 20.0C [135: 2h] [120: 2h]
        Stand development: agitate for first minute only, then allow to stand undisturbed
    50) kentmere400 1+50 20.0C [135: 10m30s] [120: 10m30s]
   100) kentmere400 1+50 20.0C [135: 13m] [120: 13m]
   200) kentmere400 1+50 20.0C [135: 15m] [120: 15m]
   400) kentmere400 1+25 20.0C [135: 7m30s] [120: 7m30s]
   400) kentmere400 1+50 20.0C [135: 17m30s] [120: 17m30s]
   800) kentmere400 1+25 20.0C [135: 9m] [120: 9m]
   800) kentmere400 1+50 20.0C [135: 19m] [120: 19m]
  1600) kentmere400 1+100 20.0C [135: 2h] [120: 2h]
        Stand development: agitate for first minute only, then allow to stand undisturbed
  1600) kentmere400 1+25 20.0C [135: 25m] [120: 25m]

Calculate how much rodinal I need for a 500ml tank stand dev

devcalc calc rodinal 1+100 500

4.95ml + 495ml = 500.00ml

Alias adox.adonal to rodinal and store its density

(I weighed 280g of 200ml of my batch of Adox Adonal)

devcalc alias adox.adonal rodinal 280/200

Calculate how much Adonal I need to add to my Paterson tank for a roll of 135 in 1+25

devcalc calc adox.adonal 1+25 280

10.77ml (15.08g) + 269ml = 280.00ml (284.31g)

Get everything I need to develop my roll of kentmere400 in Adonal at 1+25

devcalc calc adox.adonal 1+25 280 kentmere400

10.77ml (15.08g) + 269ml = 280.00ml (284.31g)
   100) kentmere100 1+25 20.0C [135: 9m] [120: 9m]
   400) kentmere400 1+25 20.0C [135: 7m30s] [120: 7m30s]
   800) kentmere400 1+25 20.0C [135: 9m] [120: 9m]
  1600) kentmere400 1+25 20.0C [135: 25m] [120: 25m]