Fixer: Developing Chemicals
Fixer is the chemical that washes away all surplus photosensitive chemicals from your film - so that it won't continue interacting with light now that you've developed your film!
Adox Adofix P II - Fixer Powder - 1L
Adox Adofix P II - Fixer Powder - 5L
Ilford Simplicity Fixer - Refills