april 8, 2013 - craft · april 8, 2013. 4. where is dissolved co. 2. measured? co. 2. is measured...

1April 8, 2013www.anton-paar.com


CO2/ O2 content in beer

Anton Paar Benelux


Why is dissolved CO2 measured?

The CO2 contentstrongly influences the fresh taste of beveragesis a considerable cost factorQuality ControlProduction Control


Where is dissolved CO2 measured?

CO2 is measured in…

Beer, mixed beer, cider

Soft drinks

Mineral water

Wine and sparkling wine


CO2 absorption/solubilityCO2 absorption/solubility ξ is influenced by

– temperature– sugar– alcohol– acids & flavors– dissolved air – etc.

CO2 absorption/solubility in beverages is up to 20% lower than it is in pure water!CarboQC contains pre-defined as well as customer-specific methods to meet all requirements!


Basics of CO2 measurement

Measurement units

Gram per liter [g/L] Grams of CO2 per liter of liquid

Volumes [vol.] Volumes of CO2 at 0 °C and 1.01326 bar

(std. atmosphere) dissolved per liquid volume

1 vol. = 1.976 g/L Conversion


Anton Paar’s CO2 measuring principle

How does the

Multiple Volume

Expansion

Method work?



What makes the Multiple Volume Expansion method that outstanding?

Anton Paar’s CO2 meter selectively determines the concentration of

dissolved CO2 in beverages not influenced by other residual gases

such as air or nitrogen.


1.00

1.02

1.04

1.06

1.08

1.10

0 10 20 30 40 50

% Volume expansion

CO2 V

olume

s1. measurement

Deviation ?

Correction !

2. measurement

3. Multiple Volume Expansion Method

CO2 +dissolved airCO2 (without air)



MVE method – selective measurement

Additional output of Anton Paar’s CO2 meter:

Air Index (sum of dissolved N2 + O2)

N2 Index (dissolved N2) if beverage is filled under N2

Package pressure

Results just fororientation


Why is dissolved O2 measured?

The O2 contentstrongly reduces the shelf life of beverages

andcan cause corrosion of cans

O2 measurement ensuresproduct safety consistent beverage quality


Where is dissolved O2 measured?

O2 is measured in…

Beer, mixed beer, cider

Wine and sparkling wine

Juices

Some soft drinksgrowing demand due to trend towards

natural flavorings, addition of vitamins

and avoiding of preservatives


Basics of O2 measurement

Optochemical O2 measurement

The new series of oxygen meter with CboxQC and OxyQC

use an optochemical sensor for fast and highly accurate

determination of dissolved oxygen.


O2 measuring principle

Dye molecule absorbs lightTransfer of electrons to higher energy levelReturn to the original energy level, emission of light (luminescence)


O2 measuring principle

Dye molecule absorbs light Transfer to a higher energy levelCollision with oxygen: deactivation of the dye moleculeReturn to the original energy level, no emission of light


Basics of O2 measurement

Measurement units

[mg/L] Milligrams of O2 per liter of liquid

[ppm] Parts per million

[ppb] Parts per billion

[% sat.] Percent saturation

1 mg/L ≈ 1 ppm = 1000 ppb Conversion


Product presentation

Most precise measurement performanceCO2 repeatability 0.005 vol.CO2 reproducibility 0.025 vol.

Compatible with Anton Paar’smeasuring systemsPFD Filling Device is required4mm hose connections

Fully protected for harsh environmentsBall valve for at-line measurementGood measurement performanceNot compatible with measuring systemsFilter set for measurement with PFD available 6 mm hose connections

Laboratory use

At-line use


Product presentation

At-line version especially protected for harsh environments

Robust rubber protection covers the housingRubber handle for good grip in the handWithstands internal drop test Robust new carrying strapDatalogger


PFD Filling Device

What is a PFD Filling Device for?

Enables filling of sample intomeasuring instrumentswithout loss of CO2 and O2

Applicable for cans, PET bottles, glass bottles


PFD Filling Device

PET bottles: hanging(PET bottles expand withoverpressure)

Cans: upside down, standing

Glass bottles: upright, standing

Positioning of different packages

PET bottle adapter


Tips for installation

Sample flow in lab version Sample flow in at-line version


Product portfolio

CboxQC and CboxQC At-line are combined CO2 and O2 meters to determine the true amount of dissolved CO2 and O2 in beverages for use

− in the lab in combination with thePFD filling device

− and at-line.


Alcohol / Extract content in beer

Anton Paar Benelux


Alex 500 accurately measuressamples during all production stepsfrom your beer wort to the packagedproduct

Quickly react in case of any undesireddeviations during the brewing process

Certainty from wort to bottle


Have your beer‘s alcohol and extractcontent, calories, degree of fermentationand many more parameters determinedwhenever you wish

No need to send samples to an externallab

Independence from external labs


Ensure consistent quality and taste of your brews

Ensure what‘s on the label is in the bottle

Count on keeping your customer promise

Always keep your label promise


MEASURING PRINCIPLEA look into the instrument‘s heart.


The NIR measuring cell is temperature controlled to 20 °C

Technology part one: NIR absorption

Detectormeasures

absorbanceNIR light sourceemmits light atthree different wavelengths Sample

cell


Alex 500 measures density at room temperature and shows the result corrected for thereference temperature of 20 °C

Technology part two: oscillating U-tube principle

U-tube filled with air U-tube filled with sample


Alex 500 provides two different operation modes:

– The fermentation monitor mode:For extract measurement in wort & fermentation control

– The standard measuring mode:For determination of alcohol, real/original extract, degreeof fermentation, calories, etc. in (almost) finished beer

Certainty from wort to bottle


Alex 500 directly displays the fermentation curve for up to 40 different brews, identified via sample IDs

Up to 100 results per sample ID are storedand shown in the respective graph

You can immediately take action in caseof any undesired deviations

Fermentation monitor mode


Alex 500 shows alcohol, density and up totwo measuring units of your choice

Accuracy alcohol: 0.2 % v/vAccuracy density: 0.001 g/cm3

Up to 1000 results are stored in the internalmemory, ready for transfer to a PC or printer

Standard mode


Available measuring units

Standard mode

Alcohol Density SG

Calories Degrees lost Original / real / apparent extract

Original / present gravity Spirit indication Real / apparent degree offermentation


Accuracy of some important parameters

Some important specifications

Measuring unit AccuracyAlcohol 0.2 % v/v

Density 0.001 g/cm3

Real / apparent extract typ. ~ 0.4 % w/w

Original extract typ. ~ 0.8 °Plato

Real degree of fermentation typ. ~ 5 %

Calories typ. ~ 3 kcal/100mL


MEASURING PROCEDUREFrom taking the sample to the final measuring result.


Clear, already filtered beerDegas: by filling sample into a flask, shake sample and snift

or by e.g. putting the sample into an ultrasonic bathFilter: filter sample through a 5 μm paper filter

– Turbid, unfiltered beers and/or very dark beersDegasAdd 1g/100 mL (approx. 1 teaspoon per 100 mL) Kieselguhr(diatomaceous earth) & mix it with the sampleFilter

Sample preparation

1

2

1

2

3


Pressing the key startsthe peristaltic pump forautomatic filling of the preparedsample

After filling, the measurementstarts automatically

Filling sample & starting the measurement


What else?

Fermentation monitor mode Standard mode

Cleaning• With deionized water after each measurement series• No cleaning needed in between measurements! • Use suitable lab cleaner in case of protein residues

Check/Calibration Regularly; with deionized water Every day, with deionized

water

Adjustment If check fails: easy & quick adjustment with deionized water

april 8, 2013 - craft · april 8, 2013. 4. where is dissolved co. 2. measured? co. 2. is measured...

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