Bottled the Midnight BW Porter yesterday. Decided to use the Dots for this one. One Dot per 12 ounce bottle should yield 2.4 volumes of CO2. About right for a porter. The Dots would eliminate the need to stir the beer to ensure mixing of the priming solution. Reduced risk of increasing oxidation.
Decided to use the Dots on this one after having inconsistent carbonation on two previous brews. After a recent infection I purchased a new bottling bucket and siphon tubing. The new bottling bucket has a smaller diameter than the previous one. The new tubing used is 5/16" inside diameter. Either the tubing or the tubing in combination with the smaller diameter bucket created a reduced swirl to mix the priming sugar solution.
I also ordered new 3/8" ID tubing from NB but the fit on the racking cane was loose. I had been using locally purchased 3/8" ID tubing which had a snug fit. Seems like this tubing was a 64th of an inch or so less than 3/8". A clamp may have worked with the new tubing but could possibly still suck some air in during the siphoning. Local shop no longer has the same 3/8" ID tubing.
Might pick up a 1/2" racking cane in Marshfield tomorrow. Higher flow rate should create a better swirl in the bottling bucket.
The chart I had previously made up for using the Dots.
1 pound = 454 grams
198 Dots per pound
2.29 grams per cube
2.3 volumes for 5 gallons at 68°F = 100.32 grams of sucrose
48 bottles from 5 gallons = 2.09 grams of sucrose per bottle
2.4 volumes for 5 gallons at 68°F = 107.23 grams of sucrose
48 bottles from 5 gallons = 2.23 grams of sucrose per bottle
2.5 volumes for 5 gallons at 68°F = 114.15 grams of sucrose
48 bottles from 5 gallons = 2.38 grams of sucrose per bottle
Northern Brewer carbonation calculator