Five different models are available

5905-115V: Includes 115V Power Supply and 3.25 inch stir paddle.  Fits BOD bottles with a 5 degree taper (U.S. style 300 mL BOD bottles)  Those predominately used in the United States, Canada and Mexico.

5905-230V: Includes 230V Power Supply, 4.25 inch stir paddle and an adaptor with a 5 degree taper to fit BOD bottles used predominantly in Japan, China and Taiwan.  Will also work in U.S. style 300mL bottles.

5905-J: Includes 230V Power Supply, 4.25 inch stir paddle and an adaptor with a 5 degree taper to fit BOD bottles used predominantly in Japan, China and Taiwan.  Will also work in U.S. style 300mL bottles.

5905-K: Includes funnel with a standard taper of 24 and 4.25 inch stir paddle.  Fits BOD bottles predominately used in the U.K.  Power Supply not included.

5905-L: Includes 230V Power Supply, 4.25 inch stir paddle and funnel with a standard taper of 19. Fits BOD bottles predominately used in European countries (other than the U.K.).

Features of all models:

Includes stir paddle

5 ft. cable

Comes with 5906 Cap Membrane Kit (1.00 Mil FEP Fluoropolymer film membranes).