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dice · August 14, 2009

[PS: Rapitest pH Meter with probe on a cord]

I did get some neutral buffering solution for adjusting pH
meters that has pH 7.0. I tested the meter, and it was showing
about pH 6.9. So not off all that much at neutral pH. If I aim
for 6.5 on the meter in soils, container mix, and water,
I will be close enough for good nutrient uptake.

Looks like the cheap Kemtek test strips (color match, so never
all that accurate to begin with) and pH testing solution for the
hot tub are reading high by a lot more than the Rapitest meter
is reading low.

August 14, 2009	#29
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	[PS: Rapitest pH Meter with probe on a cord] I did get some neutral buffering solution for adjusting pH meters that has pH 7.0. I tested the meter, and it was showing about pH 6.9. So not off all that much at neutral pH. If I aim for 6.5 on the meter in soils, container mix, and water, I will be close enough for good nutrient uptake. Looks like the cheap Kemtek test strips (color match, so never all that accurate to begin with) and pH testing solution for the hot tub are reading high by a lot more than the Rapitest meter is reading low. __________________ -- alias