I have 3 Ohaus triple beam balances thatI'd be happy to sell. They have a max of 310 grams. If your looking digital for sub-gram measurements try the Ohaus Scout or Scout Pro. You can get them for about 30-40 dollars on eBay.
I think the key to getting the yeast to clean up diacetyl is to ramp up your fermentation temp near the end (when the Gravity is a few points from terminal. You can determine how long you need by testing for diacetyl. There is plenty on the web about how to do this. Two weeks would be really...
I use a no-rinse (starsan) method for all my brews and never experience a lack of head on my beer. The foaming agent should affect headretention at all.
AJ, can you describe how you perceive how sulfate affects the flavors You get out of your beers.
I have soft water and use some sulfate for my IPAs. My pale ale's and IPAs aren't getting the bright hop flavor I want. The hop flavor is a tiny bit harsh. I've read that sulfate will accentuate the...
My guess is that the Dodecylbenzenesulfonic Acid surfactant disrupts the cell membrane. Since the cell membrane regulates the membrane transport of nutrient and osmotic pressure. This process causes the inactivation of cytochromes and ATP synthase. Without ATP the cell can't regenerate.
I...
as far as I can tell the mechanism is a physical process. The negatively charged surfactant binds to the cell walls of the bacteria, which destroys the cell.
The phosphoric acid is there to simply keep the pH correct.
I got a few Spec 20 spectrometers a while back when a college was throwing them away. I recently sold a few on Ebay, which went for about $150 each. There are a few issues with this process:
1. the instrument is heavy, so it costs about $40 to ship it.
2. you need a good balance to weigh out...
I think you should use the recommended dosage to achieve the best results. On the other hand, why not use 2.5 gallons of water and .5 oz. of Starsan for a 5 gallon carboy. I would rather use less solution than use the wrong dose.
I wouldn't think contact time would make a difference at a...