Mash pH at room and mash temp?

[dogslapbrewery]

My mash pH at room temp was 5.4 and I took a reading at mash temp just to see if it was actually a .30 difference. I have a Hannah phep5 and it came up at a .10-.15 between room temp and mash temp. So not wanting to make a habit of using my meter at mash temp should I go .10 or .30? I've also hear that pH meters aren't as accurate when outside of optimal range?

 

[bigdongsr94]

I use brunwater. Here is a link with some well respected brewer thoughts: https://www.homebrewtalk.com/showthread.php?t=400490

 

[dogslapbrewery]

Hmm yeah I've read that thread and that's more based on the confusion between aiming for 5.2 at mash or room temp. I'm more curious if anyone has found the relation between mash and room temp not .35? Not sure if quality of meter would have a impact on this but I found my meter reading only .1-.2 differences in room temp compared to mash.