Darkroom Chemistry for the Australian Printmaker

Working with film, wet collodion, and traditional silver gelatin prints has taught me that chemistry is the silent partner in every darkroom session. The developer lifts shadow detail, the fixer locks the image into the paper fibres, and the right toner can add a quarter-century of archival stability to a print intended for the wall of a collector. Choosing which chemistry to keep on the shelf is as much about geography as it is about aesthetics, particularly for photographers working from studios in Brisbane, Hobart, or anywhere in between.

Across Australia, the analogue community remains wonderfully stubborn. Community darkrooms in Melbourne's inner north, weekend workshops in Adelaide's Hills, and contract printers in Sydney's Inner West all rely on a steady supply of fresh chemistry to keep the craft alive. This guide walks through the five core chemicals I keep within reach, where I source them locally, and how I store them through the sort of summer heat that turns a studio into a sauna.

The Universal Developer

Kodak D-76 and its Ilford equivalent ID-11 have been the backbone of my darkroom for years. They produce a full tonal range that suits the moody, contrasty work I pursue, and they double as a paper developer when diluted further for finer grade printing. The powdered form travels well and keeps for years if sealed, which matters when shipping to regional customers or storing in a studio that faces east and warms up by mid-morning.

Liquid concentrates such as Ilford DD-X and Adox Rodinal offer convenience for photographers who print less frequently or who want a faster development cycle. Australian retailers including Peters of Kensington in Sydney and Paxtons in the same city stock both formats, and their staff generally know the difference. Look for fresh stock with a clear manufacture date, because older developer often produces fogged highlights that no amount of compensating filtration can fix.

Stop Bath and Fixer

Stop bath is the unsung hero of the darkroom. A dilute acetic acid solution, often sold as Ilford IN-1 or a generic equivalent, halts development cleanly and extends the life of your fixer by neutralising the alkaline developer carried over on the print. The indicator version shifts colour when exhausted, removing the guesswork from timing. For alternative processes such as platinum-palladium, plain water often suffices, but for silver gelatin work an acid stop bath is non-negotiable.

Fixer, in my view, should always be an ammonium thiosulfate based rapid formula such as Ilford Rapid Fixer. It clears film and paper in a fraction of the time required by older sodium thiosulfate formulas, meaning less swelling of the emulsion and fewer reticulation marks in the final print. When ordering, decide between liquid concentrate and powder based on your freight preferences. Powders travel more reliably to regional centres such as Cairns or Launceston, where delivery vans spend hours in the sun and liquids can deteriorate en route.

Toning Chemistry and Wash Aids

Selenium toner shifts the tonal balance of a silver gelatin print, deepening shadows and adding a subtle warmth that many photographers find addictive. Beyond aesthetics, selenium also increases archival permanence, which matters for any print intended to outlive the photographer. I dilute it anywhere from 1:9 to 1:20 depending on the effect, and I always run test strips before committing a finished image to the bath.

Alongside selenium, a hypo clearing agent such as Kodak Hypo Clearing Agent or Ilford Washaid deserves a permanent spot on the shelf. These wash aids displace residual fixer from paper fibres, shortening the final wash and saving significant amounts of water, which is a quiet concern in Adelaide and Perth where mains water carries a real cost. Many Australian photographers pair the two products because they handle the chemistry of permanence so well together.

Reducers and Bleaches

Even with careful exposure and development, most prints benefit from a small adjustment. Potassium ferricyanide mixed with sodium thiosulfate forms Farmer's reducer, which allows subtle local or overall density reduction. The same chemistry, in different proportions, serves as a bleach for reversal processes and for selective toning manipulations that can rescue an otherwise perfect negative.

Because potassium ferricyanide falls under stricter handling rules in some Australian states, it is sold mainly through specialist laboratory suppliers rather than general hardware outlets. Order it from a retailer who clearly understands photographic chemistry, and never mix the powder near acids. I keep my reducer components in clearly labelled glass jars away from any food preparation area, and I refresh the working solution every few weeks during the warmer months when it deteriorates faster.

Alternative Process Chemistry

My own practice drifts toward wet collodion, cyanotype, and platinum-palladium, each of which requires its own chemistry bench. Ferric ammonium citrate and potassium ferricyanide form the cyanotype sensitizer, while platinum and palladium salts mixed with ferric oxalate underpin the most permanent photographic printing process known. These materials cost considerably more than silver gelatin chemistry and ship slowly, but the results are unmatched for fine art editions.

For practitioners outside the capitals, online ordering is usually the most reliable path. Melbourne Silver Mine and similar community darkrooms sometimes sell small quantities to members, and they are wonderful places to learn the techniques safely before committing to your own supplies. Several Australian universities with photography programmes maintain small stocks that visiting artists can occasionally access, though I always call ahead to confirm availability.

Storage and Handling in Australian Conditions

A few habits keep a darkroom running smoothly from one season to the next:

• Store powdered chemistry in airtight containers with a small sachet of silica gel, particularly important in coastal cities such as Sydney and Hobart where humidity lingers.
• Keep liquid developers in a dedicated fridge if your darkroom regularly exceeds twenty-four degrees, which is common from Brisbane across to Perth through the warmer months.
• Label every bottle with the date of mixing and the date of first use, and discard working strength fixer once clearing times lengthen noticeably.
• Build a relationship with one trusted retailer rather than chasing the lowest price, because consistency of supply matters more than a few dollars saved on freight.

Trusted Suppliers Across the Country

A handful of retailers form the backbone of Australia's photographic chemistry trade:

• Peters of Kensington in Sydney, with a long history of mail order across the continent.
• Paxtons Camera Video Digital, also in Sydney, well known for knowledgeable staff and a deep bench of darkroom products.
• Camera House, a national chain with outlets from Darwin to Hobart, useful for picking up essentials during regional travels.
• Michaels Camera Video Digital in Melbourne, long favoured by the local film photography community for alternative process chemistry.

For photographers based outside the major capitals, online ordering with tracked freight is often the most reliable option. Allow extra time during the December peak season and consider placing larger orders in October or November before the worst of the heat sits in delivery vehicles for hours at a time.

If you are running a contract printing job, planning a community workshop, or simply looking to refresh your shelves ahead of a busy print season, I would be glad to talk through your chemistry line. Reach out through the studio contact page to discuss suppliers, techniques, or anything else related to traditional printmaking. The conversation is always welcome, and so are the prints that result from a well-stocked darkroom.