Where to get ph callibration liquid?

[mariner]

Guys,As above n prpice pls pls?

[mariner]

Guys,As above n prpice pls pls?

[mariner]

Guys,As above n prpice pls pls?

[mariner]

Guys,As above n prpice pls pls?

[David]

if memory serves me correctly you can get the 500ml ones from C328, PH 4 and 7 Dennerle either that it would be rainbow that sells the taiwanese brand type

[mariner]

Thanks