Will this cause the wort (after mash but before boil) to be oxidized or any other problems?

[Miles_1111]

I am using BIAB and I need to know the volume of the wort I get after mash. Since my mash tun ( which is also boiling tun ) does not have mark to show the volume, I plan to transfer the wort to measuring cup, then transfer them back. Should I worry about oxidation of wort at this stage due to the frequent transfer? or any other problems caused by it? Thank you.

 

[RM-MN]

There are better ways to determine the volume. Most boiling vessels are a straight walled cylinder. A quick measurement of the depth can easily be calculated to the volume. Do it once with water and mark the vessel for future brews or just use a marked measurer each time. I find that the exact volume isn't critical as that.

 

[Qhrumphf]

Yes, what you're proposing will oxidize your wort. Unless you're practicing a full low oxygen process, one could make the case that your mash would have already done the damage so it likely doesn't matter.

In the event of horridly stuck mashes I've had to pour the entire mash from mash tun, clean out and reset, and pour back. Ideal? No. "Ruined" the beer? No.

Ye olde marked dipstick is the quick easy solution if you can't/don't want to mark the vessel itself. Measure volume and mark a dipstick (mash paddle, broom handle, etc) as you go, either bottom to liquid level or liquid level to top of vessel (I'd always done the former until I learned the latter). Important to recognize thermal expansion/contraction in any method. If you mark at room temp it won't be consistent with mash or boiling temp, and vice versa. Just something to keep in mind.

 

[Alex4mula]

Better to use the math from middle school to calculate. Avoid transfers.

 

[jddevinn]

I second/third say mark with a dipstick, markings or get a sightglass.

I'd put it on the scale and measure weight over using geometry. 8.34 pounds per gallon of water (at reasonable room temp). I would NOT use a kitchen measuring cup, they are notoriously inaccurate.