The SX-70 works a little differently to other Polaroid cameras, meaning it needs a film that reacts to light more slowly. That's why it has its own
POLAROID B&W SX-70 Film with 8 exposures
VINTAGE 2 APPAREIL photo POLARID SX- 70 Model 2 un blanc et 1
Vintage Polaroid Onestep SX-70 White Rainbow Stripe Instant Film
Color Film for Polaroid SX-70 - photolix.fr
Film that’s made especially for Polaroid SX-70 cameras. Black and white SX-70 film has a lower film speed (ASA) to give you photos with richer texture and finer grain. Just make sure you always shoot with lots of natural light.
Polaroid - SX-70 B&W Film - White
Shop Polaroid B&W SX-70 Film
Polaroid B&W Film for SX-70
Polaroid® SX-70 Executive
Polaroid B&W instant film for SX70 - 8 foto's