Glutathione reductase - (Aug/25/2014 )

Hi,

I'ıı measure the glutathione reductase activity of stressed wheats. I need NADPHNa4 for analyses. Supplies firms offer variable prices ranging between 2000E and 3000E (with the same CAS numbers, same purity). The best price was proposed by Calbiochem. But I have never used its products before. I used sigma and it worked very well. But sigma's NADPHNa4 costs more than 3000 E. In short, Are there anyone used Calbiochem? Could you please comment or any advise?

Thanks.

Calbiochem is fine.