- Posts 16
Last Activity:08-10-2013 1:02 PM
Posted in thread: Water Quality/Chemistry Report Thread on 03-19-2014 at 12:45 AM
Location: Dayton, Ohio (within city limits, east side)in mg/L:Total Hardness as CaCO3 152Perm
Alkalinity as CaCO3 6.6Total Alkalinity as CaCO3 86.4NonCarb Hardness as CaCO3 65.5Ca Hardness
as CaCO3 64...
Posted in thread: Brita filters: What do they filter? on 07-01-2013 at 12:22 AM
when i saw it above, i assumed it meant "total hardness minerals", but i guess that's wrong. in
the context of a water report i think it means trihalomethanes. i've never seen trihalomethanes
Posted in thread: Brita filters: What do they filter? on 07-01-2013 at 12:04 AM
hofmeister,Undergrad chemistry student and homebrewer here. Some thoughts on your questions:1)
BRITA FILTERS. Yes, Brita filters do indeed remove hardness from your tap water. I base this on
a few hou...
Posted in thread: O2 Results from my new O2 meter! on 02-20-2013 at 11:42 PM
thanks CWI. after thinking about your assessment of med cylinders and the backpressure being
overwhelmed, i'm inclined to agree with you. very interesting about the O2 bubble physics.
there's alot abo...
Posted in thread: Anyone use the disposable oxygen tanks for aerating? on 01-30-2013 at 05:15 PM
Clarification: CO2 is sold in pounds, but O2 is sold in cubic feet. this is because CO2
liquifies in the bottle, but O2 does not. now, in the big bulk tanks that the distributor uses
to store O2, it *...
Posted in thread: Anyone use the disposable oxygen tanks for aerating? on 01-29-2013 at 09:08 PM
yes, agree, 0.5 micron should in theory perform better. stay tuned!
Posted in thread: O2 Results from my new O2 meter! on 01-29-2013 at 02:55 AM
i like the time unit-per-point of grav idea. hadn't thought of that. as long as you're seeing
vigorous ferments and good attenuation, it's all good. and i suspect you're right about smaller
Posted in thread: O2 Results from my new O2 meter! on 01-29-2013 at 01:51 AM
CORRECTION: i just noticed that i had read my new gauge wrong. it wasn't 13.5 psi, it was 13.5
kPa, which is 1.958 psi. sorry everybody! so it was 3 min @ 2 psi/13.5 kPa thru a 2 micron
Posted in thread: O2 Results from my new O2 meter! on 01-28-2013 at 05:58 PM
daytrippr,i think you misunderstood. i was referring to the medical oxy regulators which have a
selector switch for Liters/Min. these regulators do not actually have a volumetric flowmeter in
Posted in thread: O2 Results from my new O2 meter! on 01-28-2013 at 05:00 PM
so if anybody out there has a DO meter, a flowmeter*, and lots of time and a fresh 20cf tank
fill of O2 to burn, here are the tests we'd all like to see.--2 micron vs. 0.5 micron diffusion