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Membrane Solutions .htm
 2010 PDF
- Funnel made from optically clear, polystyren / graduated
- Receiver & Filter adaptor made from virgin Polypropylene
- Individually wrapped sterile,certified RNase-free, DNase, non-,pyrogen, DNA-free
- Hose connector for mult-diam,easy gripper collar to simplify teghtening
Disc Size : 90mm Filter
NOW STOCK Standard 90mm PES, PVDF (47mm Size generally to Import order)
500Funnel, 500ml Receiver
Funnel : (150), 250ml, (500)
MediaMaterial : from PVDF, PES, MCE, Nylon, with 1.0um Glass Fibre PreFilter
Pore Size : 0.2, 0.45um
Reservoir Bottle 250ml or 500ml
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Glass Fibre Prefilter
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~ 1um 47mm
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eg MFGF047100B
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- Extend Filter life useGF pre-filter
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coarser weave of fibres
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0.5 to 2um nominal 1um
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- for particulates
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0.45um
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for faster flow
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0.2um
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to maximises
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may require a double filter
ie blocks more quickly
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PALL Filtration
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VacuCaps
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see Filtration Products
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Sterilility issues
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YOUR responsibility
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Chromalytic Disclaimer
NO Liability
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TGA Regulations need to to be considered
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Motorised “Oil-Free” Diaphram Vacuum Pump
. . . more PDF
240VAC ;250-300 milliBAR : 12L/m, 20L/min
Vac ONLY or Vac/Press Models
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Hand Vacuum Pump PDF
- 20cc/stroke . . . SLOW tedious for difficult filtrations
- both Vacuum and
Pressure Compound Vac Press Gauge
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Filtration
HINT !
more Hints
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- Single Stage Pump Only required/needed !
Duel stage Only relevant for large container faster pump down
- DON’T USE a Rotary Vane pump ( normally oil lubricated ! XXX)
too high a vacuum ( typical <10mmHg ) can fracture the membrane open the pores
Humid air can rust-up/sieze the pump . . . eventually
- DANGER Glass Bottles can break AND Plastic Bottle filters can collapse particularly with “oil” filtration (it softens THE plastic) & “ALL . . . use Common Sense !”
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TOO
Slow ?
use YOUR
common sense
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Check for leaks
use THAT Vacuum Gauge
that;s what
it’s for !
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It’s a viscosity problem !
warm the mix ! ( but 50C max!)
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Sterilisation ?
0.2um is a must !
otherwise
4x 0.45 faster
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dirty (unseen) media may clog the filter
don’t use
el cheapo “crap” media
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use a Large Membrane Diameter eg
90:47:25mm (SF)
x 12:3.5:1 Speed
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use a more compatibe membrane material
New PES
for water and most mid- polarity “oils” vs PVDF ???
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Use a
Syringe Pump
(35psi max)
or maybe a Peristalic pump (5-7psi max ???)
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Use Due Diligence
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OUR DISCLAIMER Appllies !
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NO returns accepted . . . for stupidity !
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IF in strife ASK !
. . . tech details may be required !
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from ~31Mar24+
