Film radiography • Darkroom • Processing chemistry

Industrial X-ray film processors, automatic and manual.

We help you choose an automatic processor or a manual tank line, the developer and fixer chemistry and the tools that keep the process under control, based on your volumes, film formats and darkroom space.

Quote within 24 hours · Sized to your volumes and formats · Technical support in Italy

Quick answer

Which processor do you need for industrial X-ray film?

A film processor takes the exposed film through developing, fixing, washing and drying at constant times and temperatures, so density and contrast stay repeatable from one radiograph to the next. With regular volumes and standard formats, an automatic roller processor is the better choice. For a few films a month, or for formats the machine cannot take, manual processing in tanks with film hangers still works well. Volumes, formats, darkroom space and the customer’s procedure decide.

We help you choose the right processor: quote within 24 hours

How much does an industrial X-ray film processor cost?

The price varies widely between a manual tank line and an automatic processor with a built-in dryer. The main drivers are usable width, throughput, temperature control, replenishment of the solutions and accessories such as silver recovery. Tell us how many films you process and in which formats, and we will prepare a quote within 24 hours for the setup you actually need.

  • Quote within 24 hours
  • Automatic and manual processors matched to your volumes
  • Help choosing chemistry and consumables
  • Technical support in Italy
What it does

What a film processor does and who uses one.

Radiographic film leaves the exposure with a latent image that only becomes visible after chemical processing. The processor does this job in a repeatable way. The developer reduces the exposed crystals to silver, the fixer dissolves the rest, the wash removes residues and the dryer delivers a film ready for the viewer. If any of these steps drifts from one day to the next, density and contrast drift too, and a correctly exposed radiograph can end up out of specification.

Users include NDT laboratories and inspection companies working for clients, foundries radiographing castings, steel fabricators and pressure vessel manufacturers, oil and gas teams inspecting piping and pipelines, and aerospace quality departments. What they share is a written procedure or a customer specification that still calls for film radiography, often with the film system class and minimum density already set.

Automatic process

Automatic roller processors

Developing, fixing, washing and drying in one pass, with controlled temperature and automatic replenishment of the solutions. Suited to steady volumes and several operators.

Manual process

Tanks, film hangers and drying cabinets

A line of temperature-controlled tanks with hangers for each film format, plus a cabinet to dry the films. It costs less and handles low volumes and odd formats well.

Chemistry

Developer, fixer and replenishers

Developer and fixer concentrates matched to the machine and the film, with the replenishers that keep the activity of the solutions stable.

Quality control

Control strips, densitometers and film viewers

Pre-exposed strips to check the process, a calibrated densitometer to measure density and a film viewer bright enough for the densities you read.

Automatic or manual

Automatic processor or manual processing with hangers and tanks?

Four facts drive the choice: how many films you process, in which formats, how much darkroom space you have and how much repeatability matters to your customers.

Comparison between an automatic processor and manual tank processing for industrial X-ray film
CriterionAutomatic processorManual tanks and hangers
VolumesSteady work, with the machine running several days a weekA few films a month or occasional jobs
Formats and lengthsAny format that fits the usable width, including long strips for panoramic exposuresAny format with a matching hanger, odd sizes included
RepeatabilityHigh: time, temperature and replenishment are handled by the machineDepends on the operator, thermometer and timer
Time per filmA few minutes from feed to dry filmLonger, with drying in a separate cabinet
Space and utilitiesCompact machine, but it needs water, a drain, power and ventilationMore floor space for tanks and cabinet, simpler utilities
Weak pointWith occasional use the solutions oxidize and the rollers need frequent cleaningMore handling, more risk of marks and scratches

A typical case is the lab that processes weld strips of the same format every day. Here an automatic processor makes sense, because every film comes out like the previous one and the operator no longer spends the shift in the darkroom. At the other end, a quality department that radiographs a few castings a month is often better served by tanks, where the solutions are renewed in batches, than by a machine standing idle for days while the chemistry ages.

Many sites keep both, with the automatic processor for routine work and a small manual line for formats the machine cannot take or as a backup during maintenance.

Selection criteria

What to check before choosing a film processor.

Data sheets tend to look alike. To compare them properly, start from your own work, check the points below and ask the manufacturer under which conditions the stated values were measured.

Usable width and formats

This is the maximum width that passes between the rollers, and it must cover the widest film you use, not the average one. For panoramic exposures on pipes, also check that the machine transports long strips smoothly and does not scratch them at the exit.

Films per hour

Stated throughput depends on film format, transport speed and how many films can be fed side by side. Ask for the figure on your format and at the developing time you will actually use, otherwise you end up comparing numbers obtained under different conditions.

Temperature and cycle time

A warmer developer shortens the cycle, but the film system class only holds under the processing conditions specified by the film manufacturer. What matters is how stable the machine keeps the developer temperature and how long it takes to reach working conditions after start-up.

Chemical replenishment

Every film uses up part of the developer and fixer, and replenishment pumps add fresh solution in proportion to the film area processed. Too little replenishment lowers density and contrast, while too much also shifts the values and raises costs and the waste you have to dispose of.

Drying and washing

A poorly washed film retains fixer residues and turns yellow in the archive over the years. Weak drying leaves sticky films, while excessive heat leaves marks. Also decide whether you need a built-in dryer or whether a separate cabinet is enough.

Water, drain and ventilation

You need a filtered water supply with adequate flow and temperature, a drain for the wash water and ventilation that takes the vapors of the warm solutions outside. Spent developer and fixer must not go down the drain and are collected in containers for disposal.

Footprint, noise and darkroom layout

Measure the door and the bench where the machine will stand, and leave room to open the cover and clean the rollers. With through-the-wall mounting the feed side stays in the darkroom and dry films come out in the light room. If the room is shared, fan noise matters too.

Maintenance and spare parts

Rollers, seals, pumps and heaters wear out. Ask which parts need replacing and how often, how long routine roller cleaning takes and whether spare parts are available in Italy within reasonable times.

Which processor does your lab need?

Tell us how many films you process each week, the formats you use and the space available. We will point you to the right solution and send a quote within 24 hours.

  • Quote within 24 hours for your setup
  • Help choosing chemistry and accessories for your darkroom
  • Technical support in Italy
Chemistry and process control

Chemistry and process control: why density matters.

Developer activity drops with use and with oxidation in air, while the fixer loses strength as dissolved silver builds up in the bath. Replenishment makes up for this, provided the dosage is right and the solutions are renewed once they reach the end of their useful life.

Looking at the films is not enough to know whether the process is stable. The method in ISO 11699-2 uses strips pre-exposed at the factory and supplied with a certificate, which you run through your own processor, read with a densitometer and compare with the reference values. If the readings fall outside the tolerances, find the cause before processing more radiographs, and it usually lies in temperature, replenishment or exhausted solutions. Logging the readings on a control chart shows a drift before it turns into a problem.

Density matters because film contrast depends on it, and so does the chance of seeing the wires or holes of the image quality indicator. That is why ISO 17636-1 sets a minimum density in the area of interest, different for technique classes A and B, to be checked with a calibrated densitometer. For the same exposure, weak development lowers density and forces you to repeat the shots.

The film system class (C1 to C6 in ISO 11699-1, with its own classes in ASTM E1815) describes film and processing together. Change chemistry, temperature or time from what the film manufacturer specifies, and the stated class can no longer be taken for granted.

Reference standards for film processing
  • ISO 11699-1:2008, classification of film systems for industrial radiography.
  • ISO 11699-2:2018, control of film processing with pre-exposed strips and reference values.
  • ISO 17636-1:2022, radiographic testing of welds on film, with film system class and minimum density.
  • ASTM E1815, classification of film systems under the American standard.
  • ASTM E999, guide to controlling the quality of industrial radiographic film processing.
  • ASTM E1079, calibration of transmission densitometers.
  • ASTM E94/E94M, general guide to radiographic examination with film.

To pick the right image quality indicator for your thickness and standard, use the IQI selection tool.

Disposal

Disposal of chemistry and film: waste codes and silver recovery.

Spent developer and fixer are hazardous waste and must never be discharged to the sewer. They are collected in separate, labeled containers, kept in temporary storage and handed over to an authorized carrier and treatment facility with the paperwork required for hazardous waste.

Fixer contains dissolved silver that can be recovered. An electrolytic or cartridge recovery unit connected to the processor removes much of it before disposal. Rejected films and films leaving the archive also contain silver and are collected by companies that specialize in recovery.

European waste codes, chapter 09 01 (wastes from the photographic industry)

They come from the European List of Waste, which Italy adopts in Annex D to Part IV of Legislative Decree 152/2006, where they are known as CER codes. These are the ones you meet most often in a darkroom.

  • Water-based developer and activator solutions, 09 01 01*.
  • Fixer solutions, 09 01 04*.
  • Wastes containing silver from on-site treatment of photographic wastes, 09 01 06*.
  • Photographic film and paper containing silver or silver compounds, 09 01 07.

The asterisk marks hazardous waste. The waste producer assigns the code, so always confirm it with your waste contractor and with the safety data sheets of the chemistry you use. The official text of the list is in Commission Decision 2000/532/EC on EUR-Lex.

Film or digital

Stay on film or move to digital?

A new processor stays in use for several years, so first ask yourself how much work will remain on film.

When it makes sense to stay on film

When the procedure, construction code or customer requires film, when the archive has to stay consistent with physical radiographs, or when volumes are low and exposures very varied. Film also remains a benchmark for resolution and needs no new software or training for the people who interpret it.

When to consider CR, DR or digitization

If you process many films a day, if chemistry and disposal weigh on costs, or if your customers accept digital images, CR with phosphor plates or DR with a flat panel removes the darkroom. Radiographs already in the archive can be digitized with film scanners qualified to the ISO 14096 series.

The differences between the technologies are covered in the CR and DR section of the industrial radiography page, in the comparison CR or DR for industrial radiography and in the article on how to digitize radiographic film. In many labs film and digital live side by side for years, with the processor kept for customers who ask for film and digital growing on everything else.

How we work

Your volumes first, then the machine.

To help you choose the processor, we start from how many films you process, the formats and the space in your darkroom. Then we point you to chemistry, control strips, a densitometer and consumables that match the film you use, send the quote within 24 hours and back you with technical support in Italy.

What to send us for a quote

  • How many films you process per week, and on how many days.
  • Film formats and lengths, including strips for panoramic exposures.
  • The film type you want to keep using.
  • The procedure or standard you must meet.
  • Available space, water supply, drain and darkroom ventilation.
  • Whether you also need chemistry, silver recovery and process-control tools.
FAQ

Frequently asked questions about industrial X-ray film processors

How much does an industrial X-ray film processor cost?

It depends mainly on the type. A manual line with temperature-controlled tanks, hangers and a drying cabinet costs much less than an automatic processor, whose price rises with usable width, throughput, a built-in dryer and accessories such as silver recovery. On top of the machine come chemistry, replenishment, disposal and maintenance. With your volumes and formats in hand, we send a quote within 24 hours.

Is an automatic processor better than manual processing?

With regular use and standard formats, an automatic processor gives more repeatable films and frees the operator from the darkroom. With a few films a month or odd formats, manual tank processing costs less and avoids solutions aging in an idle machine. Many labs keep both solutions side by side.

How much darkroom space do you need?

An automatic processor needs its bench or stand, room to open it and clean the rollers, water, a drain, power and ventilation to the outside. Through-the-wall models sit between the darkroom and the light room. Manual processing needs more floor space for tanks and a drying cabinet. Send us a floor plan or a few photos of the room and we will tell you what fits.

How do you dispose of spent chemistry and film?

Spent developer and fixer are hazardous waste under chapter 09 01 of the European List of Waste, for example 09 01 01* and 09 01 04*, and must go to an authorized contractor, never down the drain. Films containing silver fall under code 09 01 07. Recovering silver from the fixer before disposal makes sense. Always confirm the code with your waste contractor.

How often should film processing be checked?

Your procedure sets the frequency, based on ISO 11699-2 or ASTM E999. In practice many labs run a control strip at the start of each processing day and after every change of solutions, then read the densities with a calibrated densitometer. The densitometer itself is checked against a certified density step tablet.

Can you move from film to digital?

Yes, if the procedure and your customers accept it. CR uses reusable phosphor plates with exposure techniques close to film, while DR gives the image right away with a flat panel. Films already in the archive can be digitized with a film scanner. For many labs the change is gradual, and the processor stays for jobs that still call for film.

What do you need besides the processor?

Developer and fixer with their replenishers, control strips, a densitometer, a film viewer suited to the densities you read, darkroom safelights, containers for spent solutions and, if volumes justify it, a silver recovery unit. We can advise on all of it together with the machine.

How do I request a quote?

Share your weekly volumes, film formats, the procedure you follow and the space available. We reply with the right solution and a quote within 24 hours. You can use the form below, WhatsApp or email.

Contact

Let’s find the right film processor for your lab.

If you need to replace a processor, set up a darkroom or review chemistry and process control, DIPITECH Industrial Solution helps you clarify the requirement, compare the options and reach the right solution.

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