D76/D76 Eco

[Jimbob]

Does the D76 Eco developer last any longer than regular formula D76?

 

[pentaxuser]

Don't want to divert this thread, Jimbob but as an aside and in view of another thread about D76's capacity, it might be useful to know if there are instructions on its use Thanks

pentaxuser

 

[foc]

Is the D76 eco a homemade developer or who makes it?

 

[Jimbob]

Yes it is home brewed. It omits the Hydroquinone. Just wondering if the formula has better keeping properties.

 

[pentaxuser]

Just out of curiosity,Jimbob , what are the ingredients in your D76 Eco?

Thanks

pentaxuser

 

[Jimbob]

• Water @ 125F/52C, 750.0 ml
• Metol, 2.5 g
• Sodium Sulfite, 100.0 g
• Borax, 2.0 g
• Water to make 1 liter

 

[ADOX Fotoimpex]

• Water @ 125F/52C, 750.0 ml
• Metol, 2.5 g
• Sodium Sulfite, 100.0 g
• Borax, 2.0 g
• Water to make 1 liter

This formulary is to my understanding less eco than the original....
Metol is actually worse than hydroquinone. Also you do not have a superadditive effect now and developing times should technically increase. D-76 ECO is basically Xtol.

 

[Anon Ymous]

• Water @ 125F/52C, 750.0 ml
• Metol, 2.5 g
• Sodium Sulfite, 100.0 g
• Borax, 2.0 g
• Water to make 1 liter

That's a D76 variant proposed by Grant Haist.

 

[pentaxuser]

Thanks Jimbob. I am a million miles away from being any kind of a chemist and from fully understanding what change Borax might make to longevity but apart from Borax this recipe bears quite a strong resemblance to a recipe I have seen for D23 made by a YouTube presenter called John Finch and if I recall correctly I found when searching that at least 6 months seems a common minimum shelf life

What you make seems possibly closer to D-76H with the Borax according to one of the comments in the D23 video which I found quite by accident and not by knowledge when checking it. As I said I am no chemist

pentaxuser

 

[Jimbob]

Thanks to all for the feedback