Cryogenic color dots 0.35"/ 9mm These labels perform extremely well in temperature range between -80 degree C and +110 degree C Ideal for identification of vials, plastic bags and other containers For long-term cryogenic storage and color coding in deep-freezing and harsh laboratory environments Easy to write on with permanent markers; Recommended MP-1, SM-1, F-1 markers by GA International 520 labels total