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COLO.Science · Lab filtration · Vacuum membrane filtration
MANIVAC S vacuum membrane filtration manifold — stainless steel 316L, 1–6 places, 47/50 mm membranes
The MANIVAC S is a stainless steel vacuum membrane filtration manifold for the microbiological analysis of water, food and beverages. Configured with 1 to 6 filtration places and funnels of 100, 250, 300 or 500 ml, it takes 47 mm and 50 mm membranes, is made entirely of AISI 316L stainless steel and is fully autoclavable at 121 °C and flame sterilisable. The 6-place version has product code PRO5024.
Membrane filtration in stainless steel, from one to six places
In membrane filtration, a measured volume of liquid is drawn by vacuum through a membrane filter that retains the microorganisms; the membrane is then placed on a culture medium and the colonies are counted. The MANIVAC S manifold carries 1 to 6 funnels on a common stainless steel vacuum line. Each place has a sintered stainless steel membrane support for uniform flow and its own valve, so samples are filtered independently and in parallel.
Configuration and filtration
- 1, 2, 3, 4, 5 or 6 filtration places on one stainless steel manifold.
- Funnels of 100, 250, 300 or 500 ml, each with its own stainless steel lid.
- 47 mm and 50 mm membrane filters.
- Sintered stainless steel membrane support — uniform flow across the whole membrane.
- Individual valve per place — independent opening and flow regulation.
Material, sterilisation and vacuum
- AISI 316L stainless steel funnels, supports, valves and manifold.
- Threaded quick funnel connection, no clamp.
- Complete autoclavability at 121 °C, flame sterilisation of funnels and supports, dry heat in a drying oven.
- Optional oil-free VACUU-CDT30 diaphragm vacuum pump, 30 L/min.
Suitable for
- Drinking water and public water supply control.
- Bottled, mineral and spring water.
- Food, dairy, beverages, breweries and soft drinks.
- Pharmaceutical purified water and microbial limit testing.
- Environmental, surface and pool water monitoring.
- Particle and suspended solids determination.
Why a stainless steel vacuum membrane filtration manifold
Membrane filtration concentrates the microorganisms from a large sample volume onto one membrane, which makes it the reference technique when the expected counts are low — as in drinking water, bottled water and finished beverages. The result depends on three things the manifold controls: sterility of everything the sample touches, an even flow through the membrane so the colonies are spread and countable, and independent places so one sample does not influence another.
The MANIVAC S answers all three in stainless steel 316L. Funnels and supports are autoclaved at 121 °C or flamed between samples; the sintered stainless steel support spreads the flow over the whole membrane; and each place has its own valve. Without glass parts, the manifold is robust in daily routine work.
Vacuum membrane filtration manifold configurations and product code
The MANIVAC S is offered in six configurations, from 1 to 6 places; the funnel volume and the membrane diameter are chosen with the order. The configuration is confirmed in the COLO.Science quotation.
6-place version: MANIVAC6S · PRO5024 · Product group: Lab filtration — vacuum membrane filtration
Configurations MANIVAC1S, 2S, 3S, 4S, 5S and 6S; funnels 100 / 250 / 300 / 500 ml; membranes 47 / 50 mm; AISI 316L; autoclavable at 121 °C.
Technical specifications of the vacuum membrane filtration manifold
| Configurations | MANIVAC1S – MANIVAC6S (1–6 filtration places) |
| Product code (6 places) | PRO5024 |
| Funnel volume | 100, 250, 300 or 500 ml |
| Membrane diameter | 47 mm and 50 mm |
| Membrane support | Sintered stainless steel, uniform flow |
| Funnel connection | Threaded quick connection, no clamp |
| Funnel lid | Individual, stainless steel |
| Flow control | Individual valve per place, independent opening and regulation |
| Material | AISI 316L stainless steel (funnels, supports, valves, manifold) |
| Autoclaving | Complete, 121 °C |
| Other sterilisation | Flame; dry heat (drying oven) |
| Vacuum connection | Hose connection on the manifold |
| Vacuum source | Lab diaphragm vacuum pump (optional VACUU-CDT30) |
| Dimensions | According to configuration, in the quotation |
Operating functions
Filtration
The sample is poured into the funnel and drawn through the membrane by vacuum. The sintered stainless steel support under the membrane distributes the flow evenly, so the retained microorganisms are spread over the whole membrane surface and the colonies can be counted after incubation.
Independent places
Each place has its own valve: open only the places in use, regulate the flow per place and filter one sample or several at the same time. The vacuum stays stable and samples do not influence each other.
Sterilisation between samples
Funnels and supports are flamed between samples in routine work, or autoclaved at 121 °C together with the manifold. Each funnel has its own stainless steel lid that protects it after sterilisation.
Material, sterilisation and safe operation
Funnels, membrane supports, valves and the vacuum manifold of the MANIVAC S are made of AISI 316L stainless steel — the grade used where corrosion resistance and repeated sterilisation matter. The funnel is connected to the support with a threaded quick connection, without a clamp, so it is assembled and removed in seconds.
The whole manifold is autoclavable at 121 °C; funnels and supports can also be flamed or dry-heat sterilised in a drying oven. The manifold connects by hose to a laboratory diaphragm vacuum pump; a filtrate collection and safety flask between the manifold and the pump protects the pump from liquid.
Standard delivery and options
- Stainless steel 316L vacuum manifold with 1–6 places and individual valves.
- Stainless steel 316L funnels with lids — 100, 250, 300 or 500 ml.
- Sintered stainless steel membrane supports for 47 / 50 mm membranes.
- Optional: oil-free VACUU-CDT30 diaphragm vacuum pump, 30 L/min.
- On request: filtrate collection and safety flask with tubing, membrane filters, spare funnels.
COLO.Science can put together a complete membrane filtration set for a specific laboratory or tender. The delivered configuration for a specific order is the one confirmed in the COLO.Science quotation.
Technical specification, category and pump links
- MANIVAC S vacuum membrane filtration manifold — technical specification (PDF) — four pages, A4 landscape, with configurations, parameters, delivery and options.
- Laboratory filtration and purification devices — the filtration category in the COLO shop.
- Membrane Filtration Overview — step-by-step workflow, membranes, manifolds and accessories.
- Membrane Filtration Catalogue — products and codes for ordering.
- VACUU-CDT30 diaphragm vacuum pump — oil-free pump, 2 PTFE heads, 30 L/min — optional vacuum source.
- Laboratory equipment on COLO.Science — our international site.
Applications of the vacuum membrane filtration manifold
Water. Drinking water, public water supply, bottled and mineral water, pool and surface water: membrane filtration of 100 ml or larger samples for coliforms, E. coli, enterococci, Pseudomonas aeruginosa and other indicator organisms.
Food and beverages. Soft drinks, juices, beer, wine and dairy: detection of spoilage organisms and quality control of process water and finished products, where low counts require filtering large volumes.
Pharmaceutical and microbiology laboratories. Purified water and microbial limit testing, environmental monitoring, teaching and research; also particle and suspended solids determination by gravimetric filtration.
Selection guide for a vacuum membrane filtration manifold
- Number of places. 1–2 places for occasional work, 3 places for routine laboratories, 6 places for high-throughput water and food testing.
- Funnel volume. 100 ml for the standard 100 ml water sample, 250–300 ml for beverages, 500 ml for low-count samples.
- Membrane. 47 mm or 50 mm; choose the pore size and membrane type by the method.
- Vacuum. Use an oil-free diaphragm pump such as the VACUU-CDT30 and a collection / safety flask to protect the pump.
- Other filtration devices. See the filtration devices category.
Configuration notice
This page is provided for orientation and product selection. It does not replace the binding specification, the delivered configuration, the validation protocol or the acceptance criteria confirmed in the official COLO.Science quotation, proforma invoice or order confirmation. Confirm the number of places, funnel volume, membrane diameter, vacuum pump and accessories for the specific order. Specifications may change without notice. B2B prices are quoted net, excluding VAT.
Sales and support for international customers
COLO Lab Experts
Polje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
