Refrigerant V-55C

[bratosin]

Hi guys. Can you help me with information about V-55C refrigerant that is commercial and what is replacement. It is used at a -50 degrees lyofilizator .
Thank you in advance.

[al]

Not heard of that one, i've used 507 successfully in lyophilizers.

[bratosin]

Hi Al I finally found what type of refrigerant used equipment. R508B cascade of 407C. Thank you so much for information.