How to Choose a Lenticular Filter for Beer

A lenticular filter can clarify beer after fermentation and maturation or polish it before a downstream filter. Beer drawn after tank settling may carry more yeast than beer leaving a centrifuge. Take the trial sample from the proposed filter inlet and tell the supplier what appearance and flavor the outlet beer needs to have. Brewery depth filtration applications

For media, housing and sizing considerations across applications, see our industrial buyer's guide to lenticular filters.

Key takeaways

• Define whether the module will handle initial clarification, polishing or protection of a downstream filter.

• Trial the grade on beer at the intended transfer temperature and measure quality through the end of the run.

• Compare accepted beer volume per run and record oxygen pickup, beer loss and changeover time.

• Specify packaged-beer microbiological criteria separately from the clarification target.

Place the filter where it solves a defined problem

A clarification module can remove residual yeast and suspended material after the beer has settled or undergone another bulk solids removal step. For beer that is already partly clarified, a polishing grade can take out a finer load before transfer to the bright beer tank or a downstream membrane. Position the module according to the feed and the next stage's needs. Beer polishing before bottling

If your packaged beer has a microbiological release requirement, specify the brewery's validated control step and verification separately. A measured haze reduction describes the clarification result. Microbial control requires evidence for the final process and the relevant spoilage organisms. Craft beer final filtration guidance

Select a grade for the beer you want to package

Start with a clarity range for the beer style and define how and when to measure it. A bright lager and a deliberately hazy beer may need different endpoints. For a beer that develops haze when chilled, include an agreed cold measurement as well as the measurement you use at transfer. Protein and polyphenol interactions can contribute to haze, so a sample that looks clear at one temperature tells you little about how the same beer will look after chilling. Research on haze in flavoured lager

Test a clarification grade and a finer candidate if both are plausible for the duty. Give both the same representative feed and comparable trial conditions. Choose the grade that meets the style's visual and sensory targets within the available transfer time. When fine media loads too quickly, compare a coarser first stage or better upstream solids separation on the same beer. Brewery media selection and staged clarification

Measure a run that resembles production

Write down the batch volume and the time available for beer transfer after allowing for setup and conditioning. This gives you a required process flow. Use the proposed grade at a representative flux in the trial and follow the pressure trend against cumulative volume. At the agreed pressure or quality endpoint, record both the feed volume processed and the accepted beer recovered.

Collect samples after the outlet has stabilized, during the run, and near its endpoint. Keep the temperature and measurement method consistent when comparing turbidity. Include the brewery's sensory check and record any beer lost during the transition from rinse liquid, or left behind during draining. Repeat on a higher-load batch if solids carryover varies materially between runs. Depth filter pilot and scale-up guidance

The trial record should show whether the grade met both requirements. If you reach the pressure limit before finishing the batch despite acceptable clarity, compare the cost of adding area with the cost of removing more solids upstream.

Check the housing, oxygen pickup and changeover

Review the wetted flow path as part of the quote. Ask for the proposed seals and adapter, gauge locations, vent and drain layout, and space to lift out the wet module. Confirm that the system fits the brewery's transfer and cleaning procedure. The LOONGFiltration beer application page lists modules and housings. Confirm the fit of the quoted parts against their drawings. LOONGFiltration beer filtration applications · Lenticular filter housing

Use the brewery's dissolved oxygen sampling method to compare beer entering and leaving the filtration setup. Record the points and timing, including startup if that is where the brewery expects pickup. Relate those readings to the packaging specification. Use the paired readings to locate pickup during filtration before comparing the packaged beer with its release specification. Brewers Association packaging quality guidance

Get the conditioning and cleaning instructions for the quoted module and vessel. For a reuse proposal, ask which module supports the intended rinse or backflush, how to check performance after regeneration, and how to determine when to retire it. Plan the cost comparison on demonstrated runs through your own changeover process. Module operating instructions

Compare quotes on accepted beer

Ask for the proposed area, grade, vessel and operating conditions as a single configuration. Compare the accepted beer each configuration produces within the transfer window. Count any module change during the run, the time to prepare and clean the line, and the value of discarded beer.

Frequently asked questions

What micron grade should I use for beer?

Shortlist grades from the actual feed and outlet target. A grade used to polish beer after upstream clarification has a different load from one taking beer directly from a tank after settling. Confirm the choice on a representative run.

Can I use a lenticular filter for a hazy beer?

Define the haze you want to keep and the particles you want to remove. Assess the trial against the beer's target appearance and sensory profile. Use the same assessment when you compare candidate grades.

Can I backflush every module used for beer?

Backflush only a configuration with a documented procedure for that duty. LOONGFiltration lists DKF-B for backflush applications. Confirm the exact grade and assembly with the supplier and measure recovery of flow and quality on your beer. LOONGFiltration lenticular range

What should I check if the filter reaches its pressure limit early?

Compare the feed temperature, solids load and flux with the trial conditions. If the feed carries more yeast or hop material than expected, evaluate improved upstream separation or additional area under the same quality target.

Request a brewery filter quotation

Send LOONGFiltration the beer style, batch volume, transfer window and clarity target. Include the existing vessel drawing if you are replacing modules and any pressure or oxygen data from a recent run. Discuss your brewery filtration duty with LOONGFiltration