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The effects of reliable Quality Control in a
Craft Brewery.
5th European MicroBrew Symposium Monday, 7th November 2016 | Nuremberg
Julia Sattler | Michaela Schölnberger Product Management Lab Density & Concentration
Anton Paar GmbH
www.anton-paar.com www.anton-paar.com
Retrospect Microbrew Symposium 2014
Mash tun
Lauter tun
Whirlpool & Cooler
Fermentation
Filtration
▸What is
▸What does Anton Paar stand for?
▸ Extract measurement in Wort & Fermentation
Control based on Density
▸ Analysis of Dissolved Gases along the
Filtration and Filling process
▸ Instrument Package ‚Craft2Craft‘
www.anton-paar.com www.anton-paar.com
Retrospect Microbrew Symposium 2014
OUR CRAFT
Craftmanship has fueled our company ever
since Anton Paar founded his
one-man workshop in 1922.
Today we are the world‘s first address for precise
measurements on beer. Like you, we‘re driven to find
new solutions, improve and refine, never stop the
flow of ideas.
www.anton-paar.com www.anton-paar.com
▸ Instrument Update
▸ The effects of reliable Quality Control in a Craft Brewery
▸ Possible improvements based on customer experiences
▸ Why a measurement tells you more than a calculation
▸ Creativity meets Quality
Agenda
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INSTRUMENT UPDATE
What‘s new in the Craft2Craft product portfolio.
www.anton-paar.com www.anton-paar.com
UPDATE – The Craft2Craft Package
DMA 35 Portable Density Meter incl.
Rubber Protection Housing
Craft2Craft
Instrument Case
CarboQC At-line CO2 Meter or
CboxQC At-line CO2 & O2 Meter or
OxyQC O2 Meter
Alex 500 Alcohol and
Extract Meter
www.anton-paar.com www.anton-paar.com
Alex 500
the new Alcohol and Extract Meter
complements the portfolio for quality
control in the craft brewery
Craft2Craft within the brewing process – Status 2016
Mash tun
Lauter tun
Whirlpool & Cooler
Fermentation
Filtration
www.anton-paar.com www.anton-paar.com
▸ Patented combination of measuring
technologies (US 8106361; AT 504436 A4)
▸ NIR absorption technology at three different
wavelengths
▸ Density measurement based on the
oscillating U-tube principle
▸ Statistical model is used to determine
alcohol, extract and more typical beer
parameters
New since 2015: Alex 500 Alcohol and Extract Meter
www.anton-paar.com www.anton-paar.com
▸ Alcohol and OE measurement for
small Breweries
▸ Quick easy inline installation
▸ For regular beers only,
no alcohol-free or mixed beers
New since 2015: Beer Monitor Basic for Process Control
*BMB not integrated in C2C Package
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EFFECTS OF QC
My beer meets my (customers) expectations to 100 %.
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▸Measure samples during all production steps from
your beer wort to the packaged product
▸ No need to send samples to external lab
▸ Quickly react in case of any undesired deviations
▸ Fermentation monitor mode: based on density
Measurement of (apparent) extract - WHY
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“If, for instance, we would receive grain from the mill that has been
crushed using the wrong mill settings, it would affect our product – the
DMA 35 density meter would give us this information soon enough to
avoid any serious mishaps.”
John Driebergen, head brewmaster, Fourpure brewery, London (UK)
Measurement of (apparent) extract - WHY
www.anton-paar.com www.anton-paar.com
Benefits of digital methods
Time saver: Measurements on are at least five times faster
No chance for errors: Values are shown on a big screen
Traceability/documentation: stores/exports/prints data
Covers whole range & all measuring units required
Automatic temperature compensation: no manual corr.
Robust design: ready for a long working life
Cost savings: savings in time & efforts x labour cost
„There are only 2 types of
hydrometers,
those that have broken and
those that will break soon.“
www.anton-paar.com www.anton-paar.com
▸ Door opener for a better understanding of the brewing process
▸ Gives possibility of calculation of approximate alcohol content
Measurement of (apparent) extract - WHY
If it is so easy,
why should I
also MEASURE
the alcohol?
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▸ Calculations for alcohol & original extract …
▸ … are based on given formulas
(e.g. Balling formula; HMRC calculation in UK)
▸ … consider the main ingredients water, hops, malt
( a certain amount of extract is converted to a
defined amount of CO2 and alcohol)
Alcohol calculation vs. measurement
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▸Main reasons for deviations calculation vs. measurement
▸ High Gravity Beer Styles
▸ Adjuncts: e.g. rice / sugar syrup, maltose, barley, wheat, honey …
▸ Secondary fermentation (addition of sugars before bottling)
▸ Further potential reasons
▸ Conditions during brewing and fermentation (e.g. uneven temperatures
across the mash bed, changes in mashing procedure)
▸ Evaporation not considered in calculations
▸ Dilution, …
Alcohol calculation vs. measurement
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▸ Check your beer‘s alcohol and extract content,
calories, degree of fermentation etc. yourself, at any
time
▸ Before / after bottling
▸ Compare different batches & ensure consistent quality
and taste
▸ Ensure what‘s on the label is in the bottle
▸ Learn more about influencing factors on consistent
quality
Measurement of alcohol and real/original extract - WHY
www.anton-paar.com www.anton-paar.com
“If we notice that there is something out of specifications, then we can
still take action and get the batch back on track before submitting the
sample.”
Tuomas Markkula, head brewmaster Malmgård brewery, Finland
Measurement of alcohol and real/original extract - WHY
www.anton-paar.com www.anton-paar.com
▸ CO2 content is one of the most important quality criteria
▸ Strongly influences the fresh taste, so-called “Rezenz”
▸ as well as the amount of foam
▸ Check your beer‘s dissolved CO2 content
▸ during conditioning/maturing in tanks
▸ before and after packaging,
final QC on CO2 in canned/bottled product
Measurement of dissolved CO2 - WHY
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▸ Typical beer types & their CO2 values
▸ The solubility of dissolved CO2 is dependent on
▸ Temperature – lower solubility at higher temperatures
▸ Pressure – solubility increases proportional to partial pressure
Measurement of dissolved CO2 - WHY
Beer type CO2 content
min [g/L]
CO2 content
max [g/L]
Pilsner 4.0 5.5
Weizen 5.5 7.0
Ale 3.0 5.0
Porter, Stouts 3.0 5.0
...
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How does the dissolved CO2 measurement work?
▸Multiple Volume Expansion Method
p, T p, T
Selectively measured CO2 content in beer not influenced by other residual gases
Additional determination of Package pressure and the content of Residual Gas (e.g. Nitrogen)
2nd measurement
1st measurement
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„If the CO2 pressure is too high, the dispense is going to be terrible,
and the beer will foam at the point of dispense which means that the
customers are losing money because there is too much foam in the
glass. This has to be avoided by all means.
If the beer is under-carbonated, it will dispense all right, but it will not
be met with a lot of enthusiasm by the consumer“.
Alex Lord, company director, Outstanding Beers, Bury Lancashire (UK)
Measurement of dissolved CO2 - WHY
www.anton-paar.com www.anton-paar.com
„CO2 is important for dispense, also for mouth feel, flavors, and
aromas. We like for our stouts the CO2 to be a little bit lower than our
typical core range, and our Pilsner a little bit higher.“
John Driebergen, head brewmaster, Fourpure brewery, London (UK)
Measurement of dissolved CO2 - WHY
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▸ Effects & benefits
▸ Ensure constant carbonation levels – customer experience
consistent product composition
▸ Brew and create different beer styles and accordingly monitor
different CO2 levels
Measurement of dissolved CO2 - WHY
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▸ O2 content ends up in beer oxidation
▸ Prolonged exposure to oxygen
▸ Impacts on flavor compounds in beer
Common forms of off-flavors due to oxidized beer:
cardboard-like, stale, papery, leathery, bready,…
▸Reduces the shelf life of beer
▸ Check your beer‘s dissolved O2 content
▸ Throughout the brewing and packaging process
▸ Minimize exposure to oxygen at every transfer point,
filtering, packaging,..
Measurement of dissolved O2 - WHY
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▸ Impact on Beer Quality
▸ Freshness
▸ Flavor and Hop Aromas
▸ Chill Haze: oxidation of polyphenols
▸ Colour
▸ New can coating materials
Measurement of dissolved O2 - WHY
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▸Measurement Points
▸ Any transfer - opportunity for oxygen to leak into the system
▸ While purging the tank before filling
▸ Out of the Ageing Tank
▸ dissolved O2 up to 200 ppb, ideally < 50 ppb
▸ Before and after filter/centrifuge process
▸ Identify sources of dissolved O2 ingress
▸ If buying a new filtration system or centrifuge – do your due diligence!
Measurement of dissolved O2 - WHY
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▸Measurement Points out of the BBT
▸ Important to measure right after transfer is completed
▸ Purge tanks well and measure dissolved O2 content in the
tank
▸ Fill BBT carefully!
▸ dissolved O2 up to 200 ppb (ideally < 50 ppb)
Measurement of dissolved O2 - WHY
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▸Measurement Points at the filler & out of packaged product
▸ Identify sources of dissolved O2 ingress
▸ filler head gaskets, pump fittings/seals, machine setup/design,
package itself
▸ Measuring points: at the filling line and out of the packaged
beer
▸ Calculate the Total Package Oxygen (TPO) in the package
▸ Target dissolved O2: < 100 ppb (250 ppb)
Measurement of dissolved O2 - WHY
www.anton-paar.com www.anton-paar.com
“Now, as we can monitor the oxygen, we can concentrate on different
aromas, how to keep them in the beer.”
Tuomas Markkula, head brewmaster Malmgård brewery, Finland
Measurement of dissolved O2 - WHY
www.anton-paar.com www.anton-paar.com
▸ Effects & benefits:
▸ Ensure consistent product composition – beer oxidation greatly impacts
consumer experience
▸ Effects on keeping aromas (e.g. of certain hops or fruits added) and
improve shelf life of the beer
▸ Localize oxygen ingress along the production process and quickly react to
level down and minimize beer oxidation ( “…from 2000 ppb to 10 ppb of O2…”)
▸ Detect problems in purging process
Measurement of dissolved O2 - WHY
www.anton-paar.com www.anton-paar.com
▸ Starting ‚Quality control‘ may lead to detection of inconsistencies in
your brewery
▸ QC is the first step to improve knowledge and brewing skills
▸ QC helps you to achieve the best possible taste, shelf-life, stable
conditions from batch to batch etc.
▸ All methods are applicable to any new creative beer style from the
first day on
Creativity meets Quality
www.anton-paar.com www.anton-paar.com
▸ Live tests
▸ Live tests on alcohol, Plato & density
▸ Bring your own beer!
▸User Talks daily ▸ Tuesday, 8.11. – 3 pm
Brewmaster from Malmgård Brewery, Finland
Speaks about CO2 and O2, density and alcohol measurement.
▸ Wednesday, 9.11. – 3 pm
Brewmaster of Camba Bavaria, Germany
Speaks about alcohol and extract measurement.
▸ Thursday, 10.11. – 2 pm
Oli Weiss, Germany
Speaks about density measurement in home brewing applications.
Visit us @ Brau Beviale
Hall 5
Booth 100
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