worldzfree
Well-Known Member
After having a couple of AG sessions under my belt I am starting to add some more testing. Is the iodine test the only way to determine that conversion is complete or can a PH meter or refractometer be used?
Is the iodine test the only way to test starch conversion?
- Thread starter worldzfree
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Neither a pH meter nor a refractometer will indicate your degree of conversion reliably.
Honestly an iodine test is one of those steps you can eliminate without much worry. Adding well-crushed modern brewing malt to hot water, let it be for 60 minutes and it's going to convert without a problem. You are much more likely to get a false negative iodine test reading than run into starch conversion problems.
pkeeler
Well-Known Member
If you trust those calculators that predict first running SG, then why not test for conversion with a refractometer? If the predicted sugar is in solution, why not assume conversion is done. Or at least, done enough ;-)
coypoo
Well-Known Member
http://braukaiser.com/wiki/index.php/Efficiency#Measuring_conversion_efficiency
Measure the first wort gravity. If you've converted properly you will have the same gravity as is the chart.
On normal beers (5-7% alcohol) I only do 45 minute mashes and have never had a problem
Measure the first wort gravity. If you've converted properly you will have the same gravity as is the chart.
On normal beers (5-7% alcohol) I only do 45 minute mashes and have never had a problem
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