8/11/2019 Web Darkroom Chem 2014

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 darkroom chemistry

an introduction to

8/11/2019 Web Darkroom Chem 2014

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sink 

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sink 

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sink 

name:

8/11/2019 Web Darkroom Chem 2014

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sink 

name:   developer

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sink 

name:   developer

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sink 

name:   developer stop bath

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sink 

name:   developer stop bath

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sink 

name:   fixerdeveloper stop bath

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sink 

name:   fixerdeveloper stop bath

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sink 

name:   fixer   waterdeveloper stop bath

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sink 

name:   fixer   waterdeveloper stop bath

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sink 

what do I do?

name:   fixer   waterdeveloper stop bath

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

name:   fixer   waterdeveloper stop bath

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long? 1 1/2 minutes

(90 sec)

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long? 1 1/2 minutes

(90 sec) 30 sec

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long? 1 1/2 minutes

(90 sec) 30 sec 3 minutes

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long? 1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

http://slidepdf.com/reader/full/web-darkroom-chem-2014 27/34

sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

if I am a dark purple color

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

if I am a dark purple color

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

http://slidepdf.com/reader/full/web-darkroom-chem-2014 30/34

sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

if I get cloudy whenyou drip hypo check in

if I am a dark purple color

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

http://slidepdf.com/reader/full/web-darkroom-chem-2014 31/34

sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

if I get cloudy whenyou drip hypo check in

if I am a dark purple color

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

http://slidepdf.com/reader/full/web-darkroom-chem-2014 32/34

sink 

what do I do?develops the paper

(oxidizes silver)(pH 11 or 12 = base)

stops the

developing(low pH = acid,neutralizes the

 developer)

stabilizes

the image(removes unexposed

silver from the paper)

cleans the print(washes off all

the chemicals)

how long?

I should be

replaced when...

1 1/2 minutes

(90 sec) 30 sec 3 minutes5 minutes

N/Aif I get cloudy when

you drip hypo check in

if I am a dark purple color

if I am a darkyellowish orangecolor, sort of like

this but not exactly

name:   fixer   waterdeveloper stop bath

8/11/2019 Web Darkroom Chem 2014

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 hooray !