Which pH meter is better?

[Paph_Person]

I've been wanting to get a good quality pH meter so that I'm aware of the pH of the water I'm watering/fertilising the orchids with and the pH of the media. Which pH meter is better for this task?

GroLine Soil pH Tester - HI981030

or

GroLine Waterproof pH Tester with 0.01 Resolution - HI98118

Thanks.

 

[Arne]

The first and more expensive one seems much better. It has better accuracy and is more straightforward to use.

 

[Ray]

That first one is intended to be stuck down into moist soil to read a pH. I serioujsly doublt it'll be very good in orchid media.

The better choice would be to collect pour-through samples and measure those with a typical liquid immersion probe.

 

[Arne]

That first one is intended to be stuck down into moist soil to read a pH. I serioujsly doublt it'll be very good in orchid media.

The better choice would be to collect pour-through samples and measure those with a typical liquid immersion probe.

Ray is right. The pH electrode must be in contact with liquid water. Otherwise the pH cannot be trusted.