HOMEBREW Digest #3952 Sat 01 June 2002


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	FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
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Contents:
  Re: Query re crown seals ("Country Brewer- Penrith")
  Cloudy allgrain pitched on yeast cake... (Kelly Grigg)
  What is hot break? (Kelly Grigg)
  Powdered Beer? ("Jim")
  Hop growing (K.M.)" <kmuell18 at visteon.com>
  HERMS, counter pressure filler (David Passaretti)
  National Homebrewers Conference ("Monica Tall")
  Special Invitation to Celebrate Beer Excellence ("Monica Tall")
  AHA Board Elections ("Gary Glass")
  Malt Bill for Scottish 60 query (David Towson)
  Historic Brewing Book (Jeff Renner)
  Siebel Response- Sediment in Brew-Lyn Kruger-2 ("Rob Moline")
  Siebel Response: Wort Aeration-Lyn Kruger-3 ("Rob Moline")
  Siebel Response: DO levels-Lyn Kruger-4 ("Rob Moline")
  Siebel Response: Bacteria Staining-Lyn Kruger-5 ("Rob Moline")

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---------------------------------------------------------------------- Date: Thu, 30 May 2002 14:05:25 +1000 From: "Country Brewer- Penrith" <youre_my_valentine at bigpond.com> Subject: Re: Query re crown seals > > Date: Fri, 24 May 2002 15:34:47 +1000 > From: Bernard Morey <bernardmorey at optushome.com.au> > Subject: Query re crown seals > > 1. Are standard crown seals OK to use on twist-off > bottles (Australia: stubbies)? I believe it is best to > use a capping machine for this type of bottle rather > than an old- fashioned hammer-on sealer. I guess > the latter is a bit robust for a use-once container. I would not recommend using a hand capper for anything but a bird perch(another story) I have had great success with the standard aussie twist top and a bench capper. most of (if not all) of the crown seals sold locally are usable on both twisties and crown seals > > 2. $2 shops sell attractive Chinese-made swing-top > bottles (Grolsch-style) for $2.25 or $2.50. Anyone > used these? They are more attractive than your > standard 750ml brown bottle. They are also made to a price....they feel a little light weight to me. if you do use them put them somewhere that wont be adversly affected by flying glass as they may explode...try at own risk > > Bernard Morey Melbourne am I alone in having difficulty getting onto hbd in the last coupla days??? Karl Valentine, Manager. The Country Brewer - Penrith 560 High St, Penrith, NSW, 2750. (02) 4731 5444 rainman at countrybrewer.com.au www.countrybrewer.com Abstainer, n. A weak person who yields to the temptation of denying himself a pleasure. --Ambrose Bierce, American author (1842-1914?) Return to table of contents
Date: Fri, 31 May 2002 09:40:20 -0500 From: Kelly Grigg <kgrigg at diamonddata.com> Subject: Cloudy allgrain pitched on yeast cake... Hi All, Well, was looking at my 3rd batch of all grain. I tried pitching it onto a used yeast cake from my 2nd batch of all grain. Well, lemme tell you, this stuff looked like it was boiling..the fermentation was almost immediate, and went quick. I think it may have actually already finished...in like 3 days!! But, it looks weird...VERY cloudy. Now, when I siphoned the cool wort from the boiling pot (I have a couple of sankey large kegs with the tops cut off)...into my carboys...the wort was pretty darned clear. As it went into the carboys with the used yeast cakes..it stirred up the yeast and trub from the previous batch...and got a cloudy appearance. I thought nothing of it...but, now...it is still just as cloudy!! It has the looks of raw apple cider...quite opaque. Any ideas on this...I'll give it time, but, it does not appear to be settling out at all. One other thing..this was my first attempt to use an adjunct, and I used new red potatoes that I boiled, mashed, and mixed with my grains. However, when sparging out...this stuff came out pretty clear...this cloudyness just seemed to start when I put it into my carboys with the used yeast cake. Any ideas? Is this normal for used yeast? Would some type of clarifying agent work at this time? I've never used one before. I don't think I got any type of infection... Thanks in advance for any ideas... Kelly ps. Since the weekend is upon us..could you cc answers to me at my home address...I don't get the digest there yet. cayenne8 at mindspring.com - -- - ------------------ "Oh, you hate your job? Why didn't you say so? There's a support group for that. It's called EVERYBODY, and they meet at the bar." - ------------------ - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.3ia mQENAjyfn4YAAAEH+waMyqOmkhFrbfJqfg4A68a9HuqtQ+Z4djHRRRb59udOrPi4 JvQiwiDILQ11f3Akz+C7x5/0uHc5Bgdgd7CDBYLCEis+404vHH2fXRFgdqyO8bin pVE2qh511umyZ8Rka5NQdNIspBKy7rpZ+zd8qKM2OAHsRkzhfAaRfMn20ZzqEpa3 zvN62QLHYSjOdhqq1sJo5pS9Vff0/fglcTSyUEWctsrLRqp+IBxn0deA4zKHR7eA uSpSyyyV0KwsE4fIJQQG5ji59trSSPOFkS+j6ITrcpiDT7rJfK8z+sYQUovC5/2u WrwCHAEIQa1QZEkGTJ5gE75qt5T8HxQEh634t+EABRG0C0tlbGx5IEdyaWdniQEU AgUQPJ+fhh8UBIet+LfhAQGqAAf1Gn9P49yPKjhClsOHoW1JWi9gNTfNwx+ROL3R 61pfMlPrb4Q5UN7lYkR7mip0R9CYk5Se8POOxTVAc2KGzQB/xmuYcDPmxuNK4BQ/ vN7PSkrVmoU5kC8KKMOmx0msJWYqo4k6AONtCYP8jHEqgcaBnqE89arVL4/2cAPf rfyzsdJBFZK4ww5bh2iMVSzrgs1H48I4l8TKX6vlg98n7fr8W/T3tgC22M+9O4u+ lR0yozce862Lx+b8+tw3w6OvxBQfhQXTbLHSQWE9ueSAofQQsichSsGxpCB/0c7s Hw9CzQAQvyS7PLvPBOz63Qyea5h93YJuAzDijk9smvlvxVI0 =8qS0 - -----END PGP PUBLIC KEY BLOCK----- Return to table of contents
Date: Fri, 31 May 2002 09:51:13 -0500 From: Kelly Grigg <kgrigg at diamonddata.com> Subject: What is hot break? Hello again all. Just been reading about this hot break...what exactly is it? I've done 3 batches of all-grain....and have seen some stuff solidify. Is this what I'm looking for? What is it? Am I supposed to somehow leave it in the pot when I siphon out into my carboys? If so...how do ya'll filter it out? Thanks, kelly - -- - ------------------ "Oh, you hate your job? Why didn't you say so? There's a support group for that. It's called EVERYBODY, and they meet at the bar." - ------------------ - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.3ia mQENAjyfn4YAAAEH+waMyqOmkhFrbfJqfg4A68a9HuqtQ+Z4djHRRRb59udOrPi4 JvQiwiDILQ11f3Akz+C7x5/0uHc5Bgdgd7CDBYLCEis+404vHH2fXRFgdqyO8bin pVE2qh511umyZ8Rka5NQdNIspBKy7rpZ+zd8qKM2OAHsRkzhfAaRfMn20ZzqEpa3 zvN62QLHYSjOdhqq1sJo5pS9Vff0/fglcTSyUEWctsrLRqp+IBxn0deA4zKHR7eA uSpSyyyV0KwsE4fIJQQG5ji59trSSPOFkS+j6ITrcpiDT7rJfK8z+sYQUovC5/2u WrwCHAEIQa1QZEkGTJ5gE75qt5T8HxQEh634t+EABRG0C0tlbGx5IEdyaWdniQEU AgUQPJ+fhh8UBIet+LfhAQGqAAf1Gn9P49yPKjhClsOHoW1JWi9gNTfNwx+ROL3R 61pfMlPrb4Q5UN7lYkR7mip0R9CYk5Se8POOxTVAc2KGzQB/xmuYcDPmxuNK4BQ/ vN7PSkrVmoU5kC8KKMOmx0msJWYqo4k6AONtCYP8jHEqgcaBnqE89arVL4/2cAPf rfyzsdJBFZK4ww5bh2iMVSzrgs1H48I4l8TKX6vlg98n7fr8W/T3tgC22M+9O4u+ lR0yozce862Lx+b8+tw3w6OvxBQfhQXTbLHSQWE9ueSAofQQsichSsGxpCB/0c7s Hw9CzQAQvyS7PLvPBOz63Qyea5h93YJuAzDijk9smvlvxVI0 =8qS0 - -----END PGP PUBLIC KEY BLOCK----- Return to table of contents
Date: Fri, 31 May 2002 09:54:40 -0500 (Central Daylight Time) From: "Jim" <bermingham at antennaproducts.com> Subject: Powdered Beer? The following could cut one's brew day by a considerable amount of time. Also there would be no fear of HSA. Two Purdue University students have created a beer-flavored spice as part of a college project. They converted non-alcoholic beer into a freeze-dried powder that can be sprinkled on food. They found classmates liked the beer spice to flavor chips and popcorn. The beer spice can even be used to make instant beer. Just add soda water and alcohol and you have a brewski. Rumor has it that Phil has found out about this and is attempting to corner the market for the beer spice in OZ. Hope to see all of you at Nationals in Texas Jim Bermingham Return to table of contents
Date: Fri, 31 May 2002 12:58:30 -0400 From: "Mueller, Kevin (K.M.)" <kmuell18 at visteon.com> Subject: Hop growing Here's a question for the hop grower's out there. I've recently obtained a rhizome of Liberty and was wondering about the best spot to put them in my yard. My home is in Canton, MI, so my back yard is basically clay with some top soil thrown on top. Whenever it rains the back fence line turns into a marsh for a day or so while its draining. I was wondering if the hop plant would like that much water, or not? If not, I can put the plant closer to my house where the water doesn't stay as long. The grass loves the water, but would the hops? Do any of you grow along your fence line, or is it nesessary to build a trellis for the height? I'd prefer to keep under 6 ft or so if possible, and just grow horizontally along the fence line. Any recomendations for treating the soil in the hole that I dig? I was planning on planting it in a buried bucket to keep it from spreading to far. Is that nesessary, or will it easily stay where I plant it? TIA, Kevin Canton, MI Return to table of contents
Date: Fri, 31 May 2002 07:27:32 -0700 (PDT) From: David Passaretti <dpassaretti at yahoo.com> Subject: HERMS, counter pressure filler I finally got my automated HERMS system (consisting of a PID and two solenoids) up and running. It held the mash temp within one degree and ran perfectly. I would like to thank Bill Tobler, CD Pritchard, and especially Nate Wahl (who generously donated a thermocouple) for all the help. Thanks also to the rest of the people on HBD. If anyone has any questions or needs help with a simlilar system please feel free to email. I am also considering buying a counter pressure bottle filler. In particular, Hoptech Homebrewing sells a unit with 3way valve and an automatic pressure relief valve that seems very convenient and well built. Does anyone have any experience with this unit or recs/warnings about other fillers. Thanks David Passaretti Cincinnati, OH Return to table of contents
Date: Fri, 31 May 2002 11:31:21 -0600 From: "Monica Tall" <monica at aob.org> Subject: National Homebrewers Conference YEE-haw... Join us for this year's National Homebrewers Conference! What: American Homebrewers Association National Homebrewers Conference 2002 When: June 20-22, 2002 Where: Wilson World Hotel - Irving, Texas Register Today! Visit http://hbd.org/nhc2002/index.htm or contact the Association of Brewers at 888.822.6273 or +1.303.447.8016 for more information. The 2002 "Big Texas Toast" conference will be a fun, educational gathering designed to enhance homebrewers' brewing skills and knowledge and increase homebrewing camaraderie. Event Highlights: Last-round judging of the National Homebrew Competition Three days of homebrewing lectures and seminars Nightly events, featuring beer made from clubs across the United States. Share good 'ole times and homebrews in Texas! Event Sponsors: FlavorActiV Rogue Ales Beer, Beer & More Beer BJ's Restaurant and Brewhouse White Labs Wyeast Return to table of contents
Date: Fri, 31 May 2002 11:33:43 -0600 From: "Monica Tall" <monica at aob.org> Subject: Special Invitation to Celebrate Beer Excellence The Association of Brewers specially invites you to celebrate and savor worldwide beer excellence. World Beer Cup 2002 Awards Ceremony and Gala Awards Dinner June 12, 2002 Historic Hotel Jerome -- Aspen, Colorado U.S.A. The biennial World Beer Cup is a global competition that evaluates beers from around the world, recognizing the most outstanding beers produced today. Find the exciting details on http://www.beertown.org/WBC/wbc.htm Awards Ceremony - June 12, 2002 2 p.m. to 4 p.m. 144 breweries from 16 countries will be awarded gold, silver and bronze awards in 70 beer style categories. Sample award-winning beers, imported artisan cheeses and much more while mingling with brewers from around the world. Gala Awards Dinner - June 12, 2002 7 p.m. to 10 p.m. Indulge your palate in a delicious five-course meal, featuring entrees prepared and paired with the award-winning beers. Stout Brined Venison Rack with Braised Red Cabbage Chocolate Decadence Torte with Guinness-style ice cream And more delectable courses... Special guest Garrett Oliver will help you recognize the different characters in the beer-and-entree pairings. More World Beer Cup 2002 Finalists at http://www.beertown.org/WBC/2002/finalists.htm Ticket Order Deadline -- June 3 TICKETS FOR THE EVENTS $225 for the Awards Ceremony & Gala Awards Dinner $95 for Awards Ceremony Only Contact: Jessica Gottlob, jessica at aob.org, +1.303.447.0816, for ticket information. Media Contact: Cindy Jones, Marketing Director, cindy at aob.org Return to table of contents
Date: Thu, 30 May 2002 14:06:03 -0600 From: "Gary Glass" <gary at aob.org> Subject: AHA Board Elections Congratulations to the Newly Elected American Homebrewers Association Board of Advisors Members: Steve Jones Rob Moline Alberta Rager Jeff Renner Phil Sides, Jr. We had an impressive line up of candidates this year, all of whom would have made excellent additions to the AHA Board of Advisors. The AHA Staff and Board of Advisors thank them for their efforts and their dedication to homebrewing. Thanks also to all of the AHA members who took the time to vote, there was a record number of ballots cast in this election--more than doubling last year's numbers. Cheers! Gary Glass, Project Coordinator Association of Brewers 888-U-CAN-BREW (303) 447-0816 x 121 gary at aob.org www.beertown.org The National Homebrewers Conference got so big we had to move it to Texas. Don't miss the "Big Texas Toast" in Irving, TX, June 20-22. Check out http://hbd.org/nhc2002/ The Great American Beer Festival Turns 21 this Year! Mark your calendars, October 3-5, 2002 at the Denver Convention Center, http://www.beertown.org/GABF/ Return to table of contents
Date: Fri, 31 May 2002 11:48:02 -0400 From: David Towson <dtowson at comcast.net> Subject: Malt Bill for Scottish 60 query The following appeared in HBD #3948. "I'm attempting to calculate the malt bill for a Scottish 60, a style I've never brewed before, using the Designing Great Beers Book. My OG should be around 1030-1034 according to styles guidlines and I'm brewing 10 gallons. The grain bill just seems light to me. Wanted some opinions. Here's what I have... Pale Malt 80% 10.75 lbs Roast Barley 2% .33 lbs Munich Malt 5% .66 lbs Smoked Malt 5% .66 lbs Dextrine Malt 8% 1 lbs" I plugged the recipe into Promash, and the calculated gravity for a ten gallon batch was 1.038. I have been using this program for several years, and the gravity calculations have been quite reliable. Dave in Bel Air, MD Return to table of contents
Date: Fri, 31 May 2002 10:32:01 -0400 From: Jeff Renner <JeffRenner at comcast.net> Subject: Historic Brewing Book Brewers and beer history fans Several months ago, list member Glenn Raudins posted a notice here that he was republishing the 1852 book "The Complete Practical Brewer"* at a pre-publication savings. It sounded interesting, so I went to his web site http://www.raudins.com/BrewBooks/ and decided to buy it. It arrived a couple of months ago and I've had ample time to read it. *(The complete title is "The Complete Practical Brewer; or, Plain, accurate and thorough instructions in the art of brewing ale, beer, and porter; including the process of making Bavarian beer; also all the small beers, such as root-beer, ginger pop, sarsaparilla-beer, mead, spruce-beer, etc. etc adapted to the use of public brewers and private families, or those who may wish to brew on a small scale. With numerous illustrations. By M. L. Byrn, M.D. graduate of the University of the City of New York; author of "Detection of Fraud and Protection of Health," etc.etc.") I wholeheartedly recommend this book. If you are interested in how beer was brewed in the mid 19th century, you will want this book. If you are interested in the history of applied technology, you will want this book. If you like nice books, you will want it. First, let me describe it physically. It is a handsome book, about 6"x9", 199 pages, printed on heavy acid free stock, and solidly bound with bonded leather covers. The type and illustrations is clean and very legible. I found that Glenn scanned the original book with OCR, then proof-read it all, making the usual adjustments required with still somewhat error-prone OCR, and cleaned up the whole thing. He chose fonts that matched the original type, so it has an historically accurate look but is brand new. The original illustrations of kilns, mashing machines, etc., are all reproduced very clearly. The contents include chapters on raw materials, mashing, descriptions of beer and ale, the Scotch and English systems of brewing ale, the brewing of porter, small scale brewing methods for "brewers in the interior of the states" (micro-breweries?),and descriptions of regional beers in England and Europe, including Bavarian beer. Among the historically interesting passages is this: "Ale and Beer - These two words, in Great Britain and this country, are applied to two liquors obtained by fermentation from the malt of barley; but they differ from each other in several particulars. Ale is light-colored, brisk, and sweetish, or at least free from bitter; while beer is dark colored, bitter, and much less brisk. What is called porter, in England, is a species of beer; and the term porter at present signifies what was formerly called strong beer. The original difference between these two liquids was owing to the malt from which they were prepared. Ale malt was dried at a very low heat, and consequently was of a pale colour; while beer or porter malt was dried at a higher temperature, and had of consequence acquired a brown color." This is certainly a different perspective from the modern one. Here's a recipe for Welsh ale. "This is a richly flavoured and luscious ale, and many persons are quite fond of it. Process 72 bushels of pale malt 70 pounds of hops 20 pounds of best brown sugar 2 pounds of grains of paradise" The author then gives brewing instructions. I found the inclusion of grains of paradise fascinating. This is my "secret spice" for my ginger wit beer. For a fuller description of the book, see the web site. I am hoping that Glenn finds the publishing of this book successful enough that he will go ahead with his plans to publish other historic brewing and distilling books. I understand upcoming would be M.L. Byrn's "The Complete Practical Distiller" from the late 1800's, the companion to the brewing book. Jeff - -- Jeff Renner in Ann Arbor, Michigan USA, JeffRenner at comcast.net "One never knows, do one?" Fats Waller, American Musician, 1904-1943 Return to table of contents
Date: Fri, 31 May 2002 17:07:43 -0500 From: "Rob Moline" <jethrogump at mchsi.com> Subject: Siebel Response- Sediment in Brew-Lyn Kruger-2 QUESTION Date: Tue, 14 May 2002 09:04:49 -0500 From: brewingbeer at boxfrog.com Subject: Siebel Week I represent a commercial brewery that is developing sediment in bottles of beer. The sediment is only occuring in those beers that are dry hopped, specifically Pale Ale and IPA. A sample has been analyzed by Siebel Laboratories which shows: Skins: Few Flakes: Few Strings: Few Fine Granules: Very Many Oxalate Crystals: Some Yeast - Abnormal: Some Bacteria: Few The beer is dry hopped by adding hop pellets to the fermenter after the beer has reached 34 degrees F and the yeast has been drawn off. After several days the hops are removed and the beer filtered with a DE filter. The beer remains bright in the bottle for two weeks before the formation of a very fine sediment begins. After eight weeks the sediment is more considerable, the particles form larger clumps, but the beer remains brilliant and tastes fine. We have gone to successively tighter filtrations to no avail. We suspect the abnormal yeast and bacteria are being added with the hops in the fermenter, but they do not seem to be the cause of the sediment. How do we eliminate this sediment without ending our practice of dry hopping? brewingbeer at boxfrog.com RESPONSE Brewingbeer: It may be purely coincidental that you are developing a fine sediment in your dry hopped beers and not in your beers that are not dry hopped. The results of the analysis by Siebel Laboratories shows that you have very many fine granules of protein in your sediment and this is probably the primary cause of your problem. The numbers of bacteria and yeast are not sufficient to cause a noticeable sediment. Brewhouse procedures and raw materials will influence the amount of protein that is carried into your beer. Are you using different malts for your Pale Ale and IPA? Are these higher gravity brews, in other words is your grain bill higher for these two beers? Have you noticed any differences in boil characteristics? Are your worts for these beers running as clear as your other beers? Have you tried any clarification agents (either in the kettle or during storage)? A tighter filtration will not necessarily help as this sediment is developing over time. At what temperature are you filtering? I would look into these areas to find the source of a protein haze. Lyn Kruger Siebel Institute of Technology Return to table of contents
Date: Fri, 31 May 2002 17:09:10 -0500 From: "Rob Moline" <jethrogump at mchsi.com> Subject: Siebel Response: Wort Aeration-Lyn Kruger-3 QUESTION Date: Wed, 15 May 2002 08:55:16 -0400 From: "Mike Dixon" <mpdixon at ipass.net> Subject: Siebel Week: DO levels I have a question regarding the DO (dissolved oxygen) levels in wort after aeration/oxygenation and pitching. In a properly aerated/oxygenated wort, adequately pitched for the strength of the brew, at what point is the DO level essentially zero or unmeasurable? Cheers, Mike RESPONSE Mike: Removal of dissolved oxygen by yeast depends on a number of factors: The health of the yeast (there is a yeast vitality test that measures the rate of oxygen uptake to assess the "health" of the yeast). The temperature of fermetation. The yeast strain. However, all this being said, the yeast will generally remove the dissolved oxygen very rapidly and there should be essentially zero dissolved oxygen after about 2-4 hours. Lyn Kruger Siebel Institute of Techonolgy Return to table of contents
Date: Fri, 31 May 2002 17:10:25 -0500 From: "Rob Moline" <jethrogump at mchsi.com> Subject: Siebel Response: DO levels-Lyn Kruger-4 QUESTION Date: Thu, 16 May 2002 15:03:51 -0400 From: "Schneider, Brett" <Brett_Schneider at bose.com> Subject: Siebel Week My thanks as well for the focus on homebrewers again - here's a question about wort aeration: I have a SS aeration stone on the SS dip tube extension plumbed in as an accessory to my oxy/acetylene gas welding system. My question concerns the O2 and yeast addition sequencing: normally I aerate and then pitch, but do this without knowing why I chose this method. Last time I did this was for a helles, and I saw no significant decrease in lag time, and in fact I ended up somewhat under attenuated. What is the best procedure for aerating cold wort and adding yeast? Thanks - Brett RESPONSE Brett: The issue isn't really whether you aerate the wort prior to adding the yeast or once the yeast has been added, but how much of the oxygen dissolves in the wort. The yeast doesn't care when it's added as long as it gets enough DISSOLVED oxygen. The primary reason why brewers will aerate first and then add the yeast is so that they can measure how much dissolved oxygen they are adding (you obviously cannot measure this once the yeast has been added.) Aerating the wort once the yeast has been added can in some circumstances be beneficial. You are getting the yeast well mixed and in good contact with the wort and possibly getting it off to a faster start. When I was doing fairly extensive research on fermentation on a small scale (2 liters) I would add the yeast to the wort in a 5 liter flask, shake the wort/yeast mixture vigorously 35 times (I had determined that this produced air saturation of the wort) and then poured the mixture into my fermentation vessels. This worked really well and gave me very consistent results. In large breweries where they are pitching their yeast in-line, the question of mixing is not an issue, so the yeast in generally added after aeration (although not always), but on a home brewing scale where you are adding yeast to a container, it may well be better to add the yeast first to get some good mixing. Lyn Kruger Siebel Institute of Technology Return to table of contents
Date: Fri, 31 May 2002 17:11:18 -0500 From: "Rob Moline" <jethrogump at mchsi.com> Subject: Siebel Response: Bacteria Staining-Lyn Kruger-5 QUESTION Date: Sun, 12 May 2002 20:17:11 -0400 From: Gary M Chumney <garychumney at juno.com> Subject: Siebel week-Bacteria Staining I have a bacteria staining kit with the following solutions: Carbol Fuschin Methylene Blue Crystal Violet-Ammonium Oxalate Crystal Violet Menthylene Blue with Alcohol Carbol Red I know that one of the Menthylene Blue is for determining yeast viability and which one I don't know yet. As far as the other stains are concerned which bacteria do they show in a test on a wort or beer? Thanks Gary Chumney RESPONSE: Gary: The methylene blue (presumably dissolved in water) is the correct stain for yeast viability. Crystal violet is used as part of the Gram's stain Carbol Fuschin can be used as a counterstain in the Gram's stain - it is also used as part of a spore stain for bacteria. The other stains are not really of much use in brewery applications. For example: Methylene blue with alcohol can be used as a counter stain for the Ziehl- Neelsen stain (for acid fast bacteria.) These stains are used in clinical microbiology Lyn Kruger Siebel Institute of Technology Return to table of contents
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