1. Acid and Detergent ONLY Cleaning in the Brewery Dana Johnson, Director of new Business Development MBAA-RMD OOT Meeting Glenwood Springs, Colorado September 17, 2011

2. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Who is BIRKO Corporation? Founded in 1951 Largest chemical blending facility in the Rocky Mountain Region Women’s Business Enterprise National Council (WBENC) Certified

3. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning A Little History: NONCAUSTIC Cleaning in the Brewery, The New Brewer, March-April 1996 Acid First (phos/nitric) No rinse! Noncaustic Cleaner

4. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Craft Brewers Conference, Atlanta, 1998 – MBA Article on Using Acid First to remove beerstone. Phosphoric/Nitric Acid Blend No Rinse! Noncaustic Cleaner Works Great in Serving Tanks!

5. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Wine Tanker Before Wine Tanker After Wine tanker/trailer cleaned with acid first, no rinse, immediately followed by the noncaustic cleaner

6. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning September, 2007 Avery Brewing Co. Begins Keg Cleaning with Nitric Acid/Phosphoric Acid and Detergent Additive ONLY The New Brewer Article (July/August, 2008 

7. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning pH Scale: 0………………………….2……………….5………………….7……………….9………………………12………………………14 Acid      Neutral    Alkaline pH 0-2: Very few organisms can survive very long at this pH. pH 2-5: Some acid tolerant organisms can survive, especially fungi (yeast and mold). pH 5-9: Most bacteria grow very well in this pH range. pH 9-12: Growth of most organisms is very limited. Some alkaline tolerant organisms can survive. pH 12-14: Very few organisms can survive at this pH.

8. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Solubility of Amino Acids

9. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Where is Acid and Detergent ONLY Cleaning Appropriate: Post-Primary Fermentation (Secondary Fermenters) Aging Tanks Bright Tanks, Serving Tanks Kegs Filler Tap Line Cleaning

10. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Let’s do some Acid! (Cleaning, that is). Acids that can be used for beverage processing equipment cleaning: Mineral Acids (Hydrochloric, Phosphoric, Sulfuric) Oxidizing Acids (Nitric, Peracetic Acid- PAA) Organic Acids (Citric, lactic, acetic) Phosphoric/Nitric acid blends Nitric/Phosphoric acid blends Surfactant Blends Normally Proprietary, Check with your supplier.

11. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Big Key To Remember with Acid First and Detergent ONLY cleaning: Keep your pH preferably in the range of 1.0 - 1.5 for optimum performance.

12. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Fermentation Vessel CIP (using acid and detergent only) The test was performed in the following manner: Acid Wash: 3% as supplied nitric/phosphoric blend & 0.25% detergent additive – 20 minutes Rinse Cycle PAA Sanitation

13. Copyright 2011 Birko. All rights reserved. Acid and Detergent Cleaning ONLY Fermenter Before Acid and Detergent ONLY CIP

14. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Fermenter After Acid and Detergent ONLY CIP:

15. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning 60 gallon reservoir using acid and detergent ONLY

16. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Key to cleaning kegs - get a good purge first!!!

17. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Comac Model 2T Keg Cleaning, Sanitizing and Filling Machine

18. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Bright Tanks are perfect for acid and detergent only cleaning!

19. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Serving and Bright Tanks - Ideal for Acid Only and Detergent Cleaning Beerstone Biggest Issue here Cleaning Solution can be run cooler, under C02 conditions Lowers DO Levels in beer

20. Copyright 2011 Birko. All rights reserved. Reducing Dissolved Oxygen (Acid and Detergent ONLY Cleaning of Bright Tanks) Article in The New Brewer (July/August, 2011 

21. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Filler Bowl, Tap Line Cleaning If beerstone is a problem, try this approach! May not suitable for brass and other soft metals (do not pack brass faucets with the cleaning solution, stainless is OK). Dirty tap lines are a huge issue in bars and restaurants.

22. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Why Use a Detergent Additive? Better Soil Wetting and Penetration (Compared to Using Acid Alone) Better Soil Removal (Protein Displacement/ Dispersion) Better Rinsing with a properly formulated detergent additive

23. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Why Use Nitric/Phosphoric Acid Blends? Nitric is an oxidizing acid, extremely effective on organic soils. (Beerstone contains protein). Nitric is a passivating acid to stainless steel Phosphoric “tames down” the nitric and holds pH Recycles well, and can be easily neutralized and sent down the drain.

24. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Pros of acid first and detergent only cleaning: Acid and Detergent Recycles Well Saves CO2/unaffected by C02 in the keg or tank Better at removing and preventing beerstone formation Can reduce DO level in subsequent beer in bright tanks Cons of acid first and detergent only cleaning: May not be as effective on protein soils Make sure the detergent blend works! Need good spray nozzles, preferably spinning type Caution – acid is tough on untreated concrete!

25. Copyright 2011 Birko. All rights reserved. Acid and Detergent ONLY Cleaning Conclusion: Acid & Detergent ONLY Cleaning can be not only less expensive in terms of use cost, it is proving to be more effective in removing and keeping beerstone from forming in secondary FV’s,kegs, brite tanks. Overall product quality can be improved (less DO in the beer and no flavor profile issues. Don’t work harder-Work Smarter! (Shhh: X-Puma has “bits of real panther in it!!!. Just kidding.) Thank you for your attention!!!

26. Thank you for your attention! Discussion and Comments?