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**Austinhomebrew** · 08-02-2012, 07:12 PM

These precision hydrometers have a smaller gravity range, making them more accurate than general use hydrometers. They are made of glass and have steel shot and wax at the bottom that allow them to float in solutions. Regularly priced at $54.99 for the set, we are now offering the set of 3 for $29.99.

Gravity ranges:

0.980-1.020 - for testing final gravity of wine and of most beer.
1.000-1.070 - for a wide but accurate measurement of most beer and wine.
1.060-1.130 - for testing the original gravity of wine and strong beers.

This is a limited time offer. Click here for more info. Cheers!

**uberg33k** · 08-02-2012, 07:19 PM

About how long are these hydrometers? They look to be shorter than your run-of-the-mill version. If that's true, does that mean you can take less of a sample (than a standard hydrometer) to get an accurate measurement?

ajwillys · 08-02-2012, 07:28 PM

I saw this when I got the email and was/am seriously considering it. I did some calculations of the ranges:

0.980-1.020 - 40 gravity points range
1.000-1.070 - 70 gravity points range
1.060-1.130 - 70 gravity points range

Standard Hydrometer
0.980-1.020 - 180 gravity points range

These are definitely alot more accurate, but it would be nice if they offered some more specific for beer. I only need 1.000-1.100. Doing this in 3 hydrometers, even with a 10 point overlap, it'd be nice to have:

1.000-1.040
1.030-1.070
1.060-1.100

This would give you 40 points per hydrometer and would be SUPER accurate. Yeah, I know you might say what if your OG is above 1.1 or your FG below 1? Well, for the rare cases that happens, I'd be willing to go back to my old hydrometer. Anyway, just a rant. This is a good deal. I'm probably going to pick them up anyway.

**slarkin712** · 08-02-2012, 07:35 PM

These could be useful, but I have one issue with them. How do you check the calibration of the high gravity hydrometer? It doesn't have a 1.000 marking, so you couldn't test it with water. I've had a few hydrometers that over or under estimate gravity because they became uncalibrated. Test them in water is the only way I know to test them.

**Austinhomebrew** · 08-02-2012, 07:54 PM

Quote:

Originally Posted by uberg33k

About how long are these hydrometers? They look to be shorter than your run-of-the-mill version. If that's true, does that mean you can take less of a sample (than a standard hydrometer) to get an accurate measurement?

The difference in length is roughly a 1/4". This will not make much difference in the amount of sample needed to get an accurate measurement.

**ipsiad** · 08-02-2012, 08:13 PM

Quote:

Originally Posted by slarkin712

These could be useful, but I have one issue with them. How do you check the calibration of the high gravity hydrometer? It doesn't have a 1.000 marking, so you couldn't test it with water. I've had a few hydrometers that over or under estimate gravity because they became uncalibrated. Test them in water is the only way I know to test them.

If you have an accurate scale, you can check the calibration using a sucrose solution. A 20% w/w sucrose solution (i.e. 20 grams sucrose added to 100 grams of water) at 20°C should be 1.081.

Gritsak · 08-02-2012, 08:46 PM

Quote:

Originally Posted by slarkin712

These could be useful, but I have one issue with them. How do you check the calibration of the high gravity hydrometer? It doesn't have a 1.000 marking, so you couldn't test it with water. I've had a few hydrometers that over or under estimate gravity because they became uncalibrated. Test them in water is the only way I know to test them.

You could make a ~1.065 sample and compare readings between the high gravity and a verified to be accurate middle gravity hydrometer. Not ideal, but it would be close enough in my book.

**fosaisu** · 08-08-2012, 10:18 PM

Any plans to run this special again soon? Looks like I just missed it!