wtb ph 4 fluid

[nick96ss]

looking locally for ph 4 cal. fluid

 

[masterswimmer]

We've got both the pH 7 and pH 10 calibration fluids in stock. All you need is the 7 (MUST HAVE) and then either the 4 or 10.

pH 7 calibration fluid
pH 10 calibration fluid

Russ

 

[nick96ss]

i have 7 i need the 4

 

[masterswimmer]

i have 7 i need the 4

Why? The 7 and the 10 will calibrate it just the same.
We only carry two of them because of this.