{"id":890,"date":"2023-01-06T13:40:32","date_gmt":"2023-01-06T13:40:32","guid":{"rendered":"https:\/\/davesphoto.co.uk\/?p=890"},"modified":"2023-05-27T08:27:31","modified_gmt":"2023-05-27T08:27:31","slug":"e-72-eco-paper-developer","status":"publish","type":"post","link":"https:\/\/davesphoto.co.uk\/index.php\/2023\/01\/06\/e-72-eco-paper-developer\/","title":{"rendered":"E-72 “eco” paper developer"},"content":{"rendered":"\n

I have started using this paper developer as like FX-55<\/a><\/strong> and Barry Thornton’s two bath<\/a><\/strong> film developers, I can make it at home when needed. <\/p>\n\n\n\n

at 20 degrees normal RC paper dev time is about 2 minutes.<\/p>\n\n\n\n

Use at 250mm + 750ml water for normal contrast. 1:1 %00ml + 500ml if you want more punch.<\/p>\n\n\n\n

Warm Water 50 Degrees approx.<\/td>750 ml<\/td><\/tr>
Phenidone*<\/td>0.3g *<\/td><\/tr>
Sodium Sulphite (anh)<\/td>45 g (2 tablespoons)<\/td><\/tr>
Ascorbic Acid (Vit C) **<\/td>19 g (4 1\/4 teaspoons)<\/td><\/tr>
Sodium Carbonate<\/td>77g (9 tablespoons)<\/td><\/tr>
Potassium Bromide<\/td>1.9g (1\/4 + 1\/2 1\/4 teaspoon)<\/td><\/tr>
Cold water to 1ltr<\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

* Phenidone I make a 1% solution in Propylene Glycol which makes it easy to measure out. 10ml per 0.1g<\/p>\n\n\n\n

1g Phenidone to 100ml of PG which I pre warm to about 60 degree C make the Phenidone easier to mix.<\/p>\n\n\n\n

required. I make all my Phenidone on buying it into 100ml bottles and use when needed. Also PG keeps the Phenidone alive for a very long time indeed. <\/p>\n\n\n\n

** Make sure use Ascorbic Acid and not Sodium ascorbate we use in FX-55 developer<\/strong> <\/a>as they are two different Vitamin C’s<\/p>\n\n\n\n

A rule of thumbs is to watch the development time closely and as soon as you start to see a faint image developing on the paper not the time and times that by 5.<\/p>\n\n\n\n

So is you see the image start at 20 seconds your full dev time will be around 1 min 40 seconds. <\/p>\n\n\n\n

If your total time hits 3min then make anew batch of developer.<\/p>\n\n\n\n

\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n
First attempt at using E-72 paper developer<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

I have started using this paper developer as like FX-55 and Barry Thornton’s two bath film developers, I can make it at home when needed. at 20 degrees normal RC paper dev time is about 2 minutes. Use at 250mm + 750ml water for normal contrast. 1:1 %00ml + 500ml […]<\/p>\n","protected":false},"author":1,"featured_media":905,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_vp_format_video_url":"","_vp_image_focal_point":{"x":0.54,"y":0.68},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[161],"tags":[162,163],"class_list":["post-890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-developers","tag-e-72","tag-paper-developer"],"jetpack_featured_media_url":"https:\/\/davesphoto.co.uk\/wp-content\/uploads\/2023\/01\/bfc4309697482678.png","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=890"}],"version-history":[{"count":5,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/890\/revisions"}],"predecessor-version":[{"id":1047,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/890\/revisions\/1047"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/media\/905"}],"wp:attachment":[{"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/categories?post=890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/davesphoto.co.uk\/index.php\/wp-json\/wp\/v2\/tags?post=890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}