I think I just need an upgrade to the cheap syringe..

I have been watching the color and my PH meter.

Seems it turns pink way before the meter reads 8.



(Droopy) wrote in message . com>...
> (Pete) wrote in message . com>...
> > I have been using a basic acid test kit with syringe.
> >
> > I have seen advanced kits titration based kits.
> >
> > Do I need this?
> >
> > Can't I just by the equipment from a lab?
> > Anyone have a source for this?
> >
> > thanks
>
> You don't have to upgrade, the kits are accurate enough so that using
> different glassware won;t help all that much. Most of the time if the
> kits are wrong it is because 1) the sodium hydroxide solution is old
> and has absorbed CO2 from the air making a bicarbonate buffer or 2)
> people do not titrate to the proper endpoint....phenylpthalien
> endpoints are difficult to get right....really you just want the
> faintest pink color.
>
> The easiest upgrade you can get is using a pH meter to find the
> endpoint instead of the indicator included with the kit.