My Account  |  Cart Contents

 

 

Development and prints

Repair service

Lab-Box

ars-imago products

Starter Kits

Buoni d'acquisto

Offer

New products

Polaroid

SolarFast

Photographic second hand

Online workshops

LEICA Sofort

Lumi

Lomography

Accessories

Alternative Process

Analog books

Archival

Battery

Books & Journal

Camera straps

Cameras

Chemicals
  Filmdeveloper
  Developer paper
  Stop
  Fixer
  Wetting agents and stabs
  Color chemicals
  Toner
  Chemicals others
  Photo liquid emulsion
  Raw chemicals

Darkroom

Film Scanner

Films

Filters & Caps

Fotobags

Frames

Papers

Papers (inkjet)

Passpartout

Pinhole

Retouch

T-Shirts

Pins

     
 

Diazo - 4D Diazodifenilammina idrogenosolfato, 5 g

 
     

 
Price € 16,50
   
Desired Quantity
   
Product code DIAZO4D
   
Stock Shipping in 10 days  
Watchlist
   
 

 
     
 

It replaces the Potassium and the Dichromate Ammonium in the techniques that use the Arabic gum: Bichromate gum and Gum oil.

The product does not have the toxicity of the dichromate and does not cause damage to health as the latter.

In powder form it can be stored in the freezer for up to a year while in solution it must be used within 24 hours.

The solution in good condition has a pH between 2 and 3. It must be handled in safety light both in powder and in solution. During the drafting of critical colors such as Magenta or Yellow can be used a lamp with a power of 15W maximum at a distance of at least two meters.

It is much more efficient than dichromate, in solution it is used with a concentration of 0.5%. Higher concentrations do not give any advantage, they even worsen the quality of the print.

The exposure time is halved compared to the dichromate. The sizing of the paper can be in Gelatine or better still in PVA (Polyvinylalcohol). The ratio Diazo Gomma is 1: 1.

Any yellow residues can be removed by washing in suitable solutions.

It is not possible to adjust the contrast with this product, normally a suitable negative is produced.

 

 

 

Clients who bought this item also bought ...

 

Ilford HP5 Plus 120
Ilford HP5 Plus 120
 
   

 

Kodak D76 Pulver 3.8 Liter
Kodak D76 Pulver 3.8 Liter
 
   

 

Acacia Senegal Gum 250 gr (CAS# 9000-01-5)
Acacia Senegal Gum 250 gr (CAS# 9000-01-5)
 
             

 

Acacia Senegal Gum 500 gr (CAS# 9000-01-5)
Acacia Senegal Gum 500 gr (CAS# 9000-01-5)
 
   

 

Ferrico Ammonio citrato Verde 100 gr (CAS 1185-57-5)
Ferrico Ammonio citrato Verde 100 gr (CAS 1185-57-5)
 
   

 

100 Negative sleeves, 35mm, glassine
100 Negative sleeves, 35mm, glassine
 
             

Store
ars-imago international s.r.l.
Via Caio Mario 25
I-00192 Roma

Fon: +39 06 960 42 253
EMail: info@ars-imago.com

Opening hours
From Tuesday to Friday:
11.00 - 13.30 / 15.30 - 19.30
Saturday:
11.00 - 15.00
Monday & Sunday:
Closed

About us
Contact
Business conditions
Privacy & Cookie Policy
Newsletter
Follow us on facebook
Follow us on twitter
Follow us on instagram
Blog (*new*)

Languages
Italiano English Deutsch Français

Bank
Banco di Brescia
Filiale Roma 6
via Fabio Massimo 15/17
I-00192 Roma

IBAN:
IT41A0311103234000000035894

BIC/SWIFT:
BLOPIT22

Place of business
ars-imago international s.r.l.
Via Caio Mario 23/25
I-00192 Roma

Nominal capital € 20'000 i.v.
VAT: 10374041001
Codice fiscale: 10374041001
R.E.A. RM – 1228200
Registro delle imprese Roma