Refractometer

HomeBrewTalk.com - Beer, Wine, Mead, & Cider Brewing Discussion Community.

Help Support Homebrew Talk:

genel41

Member
Joined
May 8, 2014
Messages
9
Reaction score
0
Location
Peoria
I have a like new refractometer for battery acid and glycol antifreze testing . My question is can this be used for testing my beer wort ?
 

kh54s10

Supporting Member
HBT Supporter
Joined
Aug 6, 2011
Messages
18,724
Reaction score
5,462
Location
Edgewater
If it ever had battery acid or glycol on it I would not use it. But, what is the range of the scale? Brix or Specific gravity or something else?? You will also need to know what temperature sample it will accurately measure.
 

ong

Well-Known Member
Joined
May 24, 2012
Messages
1,825
Reaction score
542
Location
Portland
Does it have a density axis on the readout (g/cm^3)?


Sent from my iPhone using Home Brew
 

surffisher2a

Well-Known Member
Joined
Sep 25, 2012
Messages
139
Reaction score
14
Location
Wilmington
As long as its in the correct range for beer / wine samples I don't see why you can't use it.

Even if it had bad stuff on it, I don't think that would matter because your not putting those one or two drops of sample back into the batch.
 

pablosbrewing

Well-Known Member
Joined
Jul 28, 2013
Messages
453
Reaction score
55
Location
Lincolnton
As long as its in the correct range for beer / wine samples I don't see why you can't use it.

Even if it had bad stuff on it, I don't think that would matter because your not putting those one or two drops of sample back into the batch.
I am pretty sure the prism / scale is different for glycol.
 

Demus

Well-Known Member
Joined
Dec 31, 2011
Messages
1,242
Reaction score
161
Location
Orlando
It doesn't matter whether or not it's clean or used. It WON'T work accurately. The scale on a brewing refractometer is calibrated for sugar solutions, NOT anti-freeze!! Anti-freeze has a different affect on light than sugar. Refractometers don't actually measure density, they measure refraction, which is viewed through a scale to estimate density. That's why they're not accurate once fermentation begins.


Sent from my iPhone using Home Brew
 

kh54s10

Supporting Member
HBT Supporter
Joined
Aug 6, 2011
Messages
18,724
Reaction score
5,462
Location
Edgewater
If it ever had battery acid or glycol on it I would not use it. But, what is the range of the scale? Brix or Specific gravity or something else?? You will also need to know what temperature sample it will accurately measure.

I didn't think about using it separate from the beer (not allowing anything back into the brew), but the question is still the scale of that hydrometer.

Will it tell you anything useful?? And/or does it measure the gravity of sugars accurately since it was designed for acid or glycol.
 

Demus

Well-Known Member
Joined
Dec 31, 2011
Messages
1,242
Reaction score
161
Location
Orlando
Will it tell you anything useful?? And/or does it measure the gravity of sugars accurately since it was designed for acid or glycol.

No and no.
Again, refractometers measure the way light bends or "refracts" through a liquid. The scale on the instrument is specific to the liquid being measured because the effect the liquid has on light is unique to that liquid...


Sent from my iPhone using Home Brew
 
OP
G

genel41

Member
Joined
May 8, 2014
Messages
9
Reaction score
0
Location
Peoria
If it ever had battery acid or glycol on it I would not use it. But, what is the range of the scale? Brix or Specific gravity or something else?? You will also need to know what temperature sample it will accurately measure.
You only need to put a drop or 2 so it don't matter what it had on it I am not going to put that drop back in there .
 

tracyk

BrazoriaBrew
Joined
Feb 26, 2012
Messages
413
Reaction score
77
Location
Down the road with the crickets and the frogs
Most battery refractometers that I have seen start at 1.10 and work their way up to 1.80, so unless you are going to brew a really, really big brew they are useless. You can buy one off ebay for about $20.00 bucks for brewing.

And what Demus stated it is measuring the amount of refraction on a certain liquid, so each refractometers is for that specific liquid.
 
Top