Working safely with cyanotype: checklist for home and workshops

By Cyanoprints GIGANT
3 min read
Safely arranged cyanotype workspace with gloves and labelled materials

Working safely with cyanotype does not start with additional protective equipment, but with a quiet, well-organized workplace and small quantities. Use this checklist at home, school or workshop. For the chemical background and first aid principles, please also read Is cyanotype toxic? .

Before you start

  • Read the label and safety data sheet of both products.
  • Choose a well-ventilated area without eating, drinking or food preparation.
  • Protect the worktop with a washable underlay.
  • Prepare water, paper towels and a waste bin before mixing.
  • Use separate measuring cups, pipettes and brushes that are never used for food.
  • Keep children and pets away from powders and stock solutions.

Personal protection

Wear gloves when weighing, mixing and coating. Safety goggles are wise when splashes are possible. Avoid loose sleeves and tie up long hair. A dust mask can be useful when working with fine powder, but scooping gently and preventing dust formation remains the most important measure.

Safe weighing and mixing

  1. Label bottles A and B before opening the package.
  2. Weigh one substance at a time and close the original packaging immediately.
  3. Use separate or thoroughly cleaned tools for A and B.
  4. Mix only according to a controlled recipe or kit instruction.
  5. Store stock solutions separately; only mix a small working amount just before coating.

The guide on cyanotype ratios clearly explains grams, milliliters and final volume.

Storage and labelling

  • Use tight-fitting, chemically suitable bottles.
  • Record full name, concentration and mixing date.
  • Store in a cool and dark place, separated from food, medicines and household chemicals.
  • Do not use beverage bottles or containers that could be confused with food.
  • Store out of reach of children and pets.

Coating and drying

Work with a small amount in a low bowl or dosing bottle. Wipe up drops immediately and do not walk through the room with an open cup. Allow coated material to dry in a marked, dark place. Tell housemates or participants that the surface is light-sensitive and has not yet been rinsed.

Illuminate with sun or UV lamp

In sunlight you can prevent it from blowing away with a safe contact plate and sturdy clamps. Do not look into powerful UV lamps for long periods of time and follow the lamp manufacturer's instructions. Shield a light box when bystanders have a direct view of the source. Keep electrical equipment away from rinse water.

Rinse and clean up

Rinse small prints gently and avoid splashing. Wash used brushes and containers separately from kitchen utensils. Never mix residues with strong acids, bleach or unknown cleaners. Follow local regulations and the safety data sheet for concentrated residues. Clean work surface and hands afterwards.

Workshop checklist

  • Prepare stock solutions in advance outside the participant area.
  • Give each participant only a small, measured amount of working solution.
  • Explain which zones are “clean” and “chemical”.
  • Use clear names; don't just talk about “green” and “red” bottles.
  • Have one supervisor supervise the sink and UV lamp.
  • Plan sufficient time for clean-up, washing hands and safely transporting wet prints.

Children and schools

Do not allow children to weigh out powder. An adult can pre-coat paper or use treated sheets. Supervise immediately, choose simple photograms and have everyone wash hands. Please consider school policy, age, individual needs and the instructions of the product used.

If something goes wrong

Stop calmly, remove others from the spill area and consult the safety data sheet. Rinse skin or eyes with plenty of water according to the product instructions. If swallowed, persistent irritation or increased exposure, contact a doctor or local poison control center. Keep packaging and safety data sheet available.

Short final check

  • Are both storage bottles closed and labeled?
  • Are leftovers processed according to local rules?
  • Have the worktop, containers and tools been cleaned?
  • Are wet prints safely stored or taken?
  • Has everyone washed their hands?

With a fixed routine, cyanotype remains a clear creative process. For a complete initial setup, check out the beginners guide .