HPLC
ACCESSORIES
Filters
47
Phone: 800-356-1688 or 814-353-1300
MobilePhaseSpargeFilter; InletFilter
The2µmhelium sparge filter isan inexpensiveway toprepareandmaintainmobilephases freeof dissolved
gas.Both filters aremade from316 stainless steel andPEEK™ and are compatiblewithmost solvents.
KontesMembraneMicrofiltrationGlassware
47mm filtration apparatus with fritted glass support is recommended for routine filtration of corrosive
liquids and removal of particles fromHPLC solvents. The ground joint connection eliminates phthalate
contamination that can occur when using silicone or neoprene stoppers. The support base has a coarse
porosity glass frit and an integral vacuum connection, located above the drip tip to prevent contamina-
tion of the vacuum linewith filtrate droplets. Each apparatus includes a funnel, an anodized aluminum
clamp, a 47mm fritted glass support base, and a filtration flask.
LastDropFilter
The flat filter element sits parallel to thebottomof themobilephase reservoir, allowing the filter todraw
98%of themobilephasewithout drawing air into the system.Conventional cylindricalmobilephase fil-
ters begin to draw air into the systemwhen approximately 10% of the solvent remains in the reservoir.
The LastDropFilter allowsmore analyses per batchof mobile phase andhelps reduce hazardouswaste.
22.1mmOD.
Description
qty.
cat.#
price
Last Drop Filter: 2µm
ea.
25314
$62
Last Drop Filter: 10µm
ea.
25315
$62
Description
qty.
cat.#
price
Mobile Phase Sparge Filter: 2µm
ea.
25311
$26
Inlet Filter: 10µm
ea.
25312
$26
Inlet Filter: 20µm
ea.
25313
$26
tech
tip
MobilePhaseAdditives
Mobile phase additives such as triethylamine, trifluoroacetic acid, and ion-pairing reagents can competewith sample ions, decreasing
sensitivity and, in some cases, reducing sample ion intake into theMS.To obtain symmetric peaks and/or sufficient retention, use base
deactivated, state-of-the-artTypeB silica packings thatminimize the need for additives.
Kontes All-GlassMicrofiltration Apparatus
qty.
cat.#
price
300mL Funnel, 1000mL Flask
ea.
KT953825-0000
$287
500mL Funnel, 2000mL Flask
ea.
KT953835-0000
$365
1000mL Funnel, 4000mL Flask
ea.
KT953845-0000
$395
Replacement Parts for KontesMicrofiltration Apparatus
qty.
cat.#
price
40/35 PTFE Joint Sleeve
6-pk.
KT676001-4035
$109
Flask Cap, 40/35Outer Joint
ea.
KT953830-0000
$29
FrittedGlass Support, 47mm, 40/35 Joint
ea.
KT953826-0000
$158
Glass Funnel, 47mm, 100mL
ea.
KT953761-0000
$47
Glass Funnel, 47mm, 300mL
ea.
KT953751-0000
$55
Glass Funnel, 47mm, 500mL
ea.
KT953771-0000
$87
Glass Funnel, 47mm, 1000mL
ea.
KT953781-0000
$116
Flask, 1000mL, 40/35 Joint
ea.
KT953827-0000
$98
Flask, 2000mL, 40/35 Joint
ea.
KT953828-0000
$157
Flask, 4000mL, 40/35 Joint
ea.
KT953829-0000
$178
Aluminum Clamp, 47mm
ea.
KT953753-0000
$59
Membrane Filters
qty.
cat.#
price
PolyproyleneMembrane Filters, 47mm, 0.45µm
100-pk.
26396
$85
PolyproyleneMembrane Filters, 47mm, 0.22µm
100-pk.
26397
$85
NylonMembrane Filters, 47mm, 0.45µm
100-pk.
26398
$95
NylonMembrane Filters, 47mm, 0.22µm
100-pk.
26399
$95
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