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Old 02-02-2010, 12:40 AM   #1
GC89
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Default Dual scale refractometer worth it?

I have been wanting to pick up a refractometer for a while and am debating between two models. I have used the standard version at a buddies in the past and know that he is happy with it. I still plan on using a hydrometer for pre and post fermentation reading but it would be nice to take preboil readings and monitor fermentation easily. My buddy uses his pretty simply just multiplying the brix to get an approximate gravity for easy readings. I know that actual calculations are needed for an accurate conversion and there are spreadsheets for this. Does anyone have experience with the dual scale version? If its going to require calculations to adjust the specific gravity reading as well it is not worth paying twice as much, but if it could be calculated to be reasonably accurate It would be a nice feature.

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Old 02-02-2010, 01:09 AM   #2
denimglen
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I've got the dual scale version.

You still need to adjust with a correction factor to get the right reading.

Also, I actually find it harder to read than my original standard type one - mainly because there are two scales there and it's a bit harder to focus on just one.

What I've done is taken a bunch of readings of different colours and gravities to get a good spread of data. Had my mate plot this data into a graph in excel and output a formula. Then I used this formula to create a conversion table that I printed out and keep in my box with the refrac. Saves me running backwards and forwards to the computer all brew day.

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Old 02-02-2010, 01:24 AM   #3
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Twice the price? Do you use software, (beersmith, etc.?), if so, those will do the conversion.

If not, print this out:

Brix SG
1 1.004
2 1.008
3 1.011
4 1.015
5 1.019
6 1.023
7 1.027
8 1.031
9 1.035
10 1.039
11 1.043
12 1.047
13 1.051
14 1.055
15 1.059
16 1.063
17 1.067
18 1.072
19 1.076
20 1.080
21 1.085
22 1.089
23 1.093
24 1.098
25 1.102
26 1.107
27 1.111
28 1.116
29 1.121
30 1.125
31 1.130
32 1.135

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Old 02-04-2010, 08:42 PM   #4
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Default Dual Scale Refractometers

Call nice lady named Kathy at MISCO Refractometer in Cleveland, 800-358-1100 x-210 and ask her about the measurements directly in specific gravity. It's very easy to use and made in the USA.

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Old 02-05-2010, 01:47 AM   #5
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So this one has only the specific gravity scale instead of dual? whats the price on this unit?

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Old 02-05-2010, 02:06 PM   #6
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It has any two measurement scales you want, Call nice lady named Kathy at MISCO Refractometer in Cleveland, 800-358-1100 x-210.

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