Lenticular Wine Filter: The Winery Buyer's Guide

A lenticular wine filter holds stacked depth filter cells inside a closed housing. Wineries use this format for clarification and polishing, including preparation for a final membrane stage before bottling. Start the selection with the wine that will reach the filter and the result needed at its outlet. A lot taken after settling presents a different filtration duty from a finished blend awaiting bottling. LOONGFiltration lenticular filter range

For the broader relationship between media, housing and filter area, see our industrial buyer's guide to lenticular filters. This guide focuses on the wine tests and production requirements to include in a winery quotation.

Key takeaways

• Define the clarification or prefiltration duty and agree on the outlet acceptance criteria.

• Measure filterability as well as turbidity when preparing wine for bottling.

• Confirm both the required flow and the accepted volume a module can deliver before changeover.

• Match the quoted module to the housing drawing and its documented operating procedure.

Place the lenticular wine filter at a defined process stage

Specify what the depth stage must remove and what follows it. A winery may need to reduce residual suspended material after earlier clarification, polish wine for transfer, or prepare the feed for a final membrane. Give the supplier a process diagram showing the sampling point and the next filter. Wine depth filtration and membrane filtration

If the bottling specification includes microbial control, define the final filter's retention validation and integrity test. Pall's wine guidance calls for evidence against relevant wine organisms and an integrity test linked to retention performance. Include these requirements in the specification for the final stage. Wine final filtration requirements

Check wine filterability before choosing a grade

Use turbidity to assess haze and a filterability test to assess the wine's tendency to block the test membrane. AWRI reports that wines with similar turbidity can behave differently during filtration. Soluble beta-glucans associated with Botrytis can contribute to fouling even when the turbidity reading is low. Investigate a difficult lot with the winery laboratory before committing to a finer grade or more modules. AWRI on polysaccharides and filtration problems

Record the test method, membrane and temperature with the result. AWRI describes different filterability calculations with different interpretations, so the result needs its method alongside it. Agree with the bottler on the test and acceptance criteria to use for the production lot. Filterability methods and interpretation

Test near the planned bottling run. Blending and additions can change the wine's colloidal condition after an earlier test. If either occurs, schedule a new check on the finished blend. Scott Laboratories recommends confirming filterability with the same membrane type used for bottling where practical. Preparing wine for bottling filtration

Trial the media on the wine you intend to bottle

Shortlist media from the inlet condition and outlet target, then compare candidates on representative wine. Keep the sample temperature and measurement method consistent. Record the proposed grade and effective area so the supplier can relate the result to the production configuration. Scott Laboratories' wine sizing guidance shows how media selection and wine condition affect throughput. Wine module selection and capacity factors

Include the winemaker's assessment of color and sensory character in the trial acceptance criteria. Retain a feed sample for comparison and label samples by their position in the run. This gives the winery a record of the wine it accepted for that particular grade and operating condition.

LOONGFiltration lists composite depth lenticular media for wine clarification. Ask for the proposed grade's technical sheet and a trial recommendation for your lot. LOONGFiltration composite depth lenticular filters

Size for the lot and the available production time

Check the proposed system against two requirements. It must transfer wine at the needed rate and process the lot to the agreed endpoint. Published wine throughput estimates depend on the media and feed conditions, and capacity after regeneration can differ from the first run. Request the basis of the supplier's estimate for the exact configuration. Wine filter sizing considerations

Calculate the required process flow by dividing the lot volume by the time available for filtration. Allow separately for conditioning, sampling and draining. For filtration in line with bottling, give the supplier the line's operating flow and its stopping and restarting pattern.

During a production trial, log cumulative volume against differential pressure. Record the volume of accepted wine at the agreed quality or pressure endpoint. Include retained wine and any discarded startup liquid in the recovery record. If the trial ends before the required lot volume, ask the supplier to revise the area or upstream preparation and repeat the assessment.

Confirm housing fit and the procedure for reuse

Match the module's connection and stack arrangement to the quoted housing drawing. Review seals, venting and drainage, and check the clearance needed to lift out a wet module. For an existing vessel, send its drawing and the current module identification with the inquiry. LOONGFiltration lenticular filter housing

Obtain conditioning and cleaning instructions for the exact media and assembly. Include storage between uses and the checks required before returning the module to service. The supplier should identify the applicable procedure with the quotation. Lenticular filtration operating instructions

Base any reuse allowance in the cost estimate on demonstrated performance. Ask how the supplier will assess recovery after cleaning and determine when the module should be replaced.

Compare quotations on the same wine duty

Give each supplier the same feed information and acceptance criteria. Ask for a complete configuration with the media grade, effective area and housing identified. LOONGFiltration's wine application page provides a starting point for discussing how the depth stage connects with the rest of the filtration process. LOONGFiltration wine filtration applications

Compare the cost per accepted liter using the trial record. Include module consumption, cleaning time and wine lost during changeover. Keep the assumptions visible when comparing a system for occasional small lots with one intended for sustained bottling work.

Frequently asked questions

What micron grade should I use for wine?

Select candidates from the feed condition and required outlet quality, then confirm them in a trial. Include the needs of the downstream membrane when the module is used for prefiltration. Ask each supplier to explain the rating and test basis for its proposed grade.

Can I use the same lenticular filter for red and white wine?

Evaluate each wine against its own clarity and sensory targets. Include color assessment for red wine and review the cleaning and storage procedure before changing products. A record from one lot can inform the next trial, while the new lot still needs its own acceptance check.

Why can clear wine still block a bottling filter?

Some fouling material contributes little to visible haze. AWRI identifies soluble beta-glucans as one possible cause. Review the filterability result and ask the laboratory to investigate the lot's history and composition. AWRI filtration troubleshooting

When should I repeat a filterability test?

Retest after blending or additions that change the wine's colloidal condition, and coordinate the final check with the bottler's schedule. Record the sample timing so the result can be traced to the wine that actually reaches the line. Filterability checks before bottling

Request a wine filtration quotation

Send LOONGFiltration your wine style, lot volume and filtration window, together with recent turbidity and filterability results. Include the housing drawing if you are replacing modules. State the outlet target and downstream filter so the proposed lenticular wine filter can be evaluated as part of your production process. Discuss your winery filtration duty with LOONGFiltration