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Filters & Frits

Bottle Caps and Plugs

BottleCapPlugs andAdapters

Use the A-626 Bottle Cap Plug to seal the third “tapered” luer hole

found in most Upchurch Scientifc

®

Bottle Caps. Or, use the A-628

Plug to seal any unused 1/16” or 1/8” bottle cap holes.

Alternatively, try the A-627 or A-629 Filter Bottle Cap Plug to cap an

unused hole in your bottle cap. The 20 µm stainless steel frit in these

products prevents foreign matter from contaminating your solvent

while leaving the bottle open to the atmosphere, thus allowing fuid

to be pulled out without creating a vacuum (generally not used with

sparging applications). All plug bodies are manufactured from ultra-

high molecular weight polyethylene (UHMWPE).

Our P-600 Bottle Cap Adapter is designed to allow the use of

1/32” OD tubing with our caps. Just insert the Adapter into a tubing

cap hole, then connect your 1/32” OD tubing with our F-126S or

F-126H MicroTight

®

Fitting (page 18).

Holes for 1/8”

OD tubing

Additional hole

for luer

A-622

GL-38 Bottle Cap

for 1/8” tubing

Holes for 1/8”

OD tubing

Additional hole

for luer

A-620

GL-45 Bottle Cap

for 1/8” tubing

A-626

Bottle Cap Plug

A-629

Filter Bottle Cap Plug

20 µm

stainless

steel frit

P-600

Bottle Cap Adapter

to connect 1/32” OD tubing

Part No. Description

Bottle Caps for GL-45, 1 L Bottles

A-610

for 3/16” OD tubing, Red

A-610B

for 3/16” OD tubing, Blue

A-620

for 1/8” OD tubing, Red

A-620B

for 1/8” OD tubing, Blue

A-630

for 1/16” OD tubing, Red

A-630B

for 1/16” OD tubing, Blue

Bottle Caps for GL-38, 4 L Bottles

A-622

for 1/8” OD tubing, Black

A-632

for 1/16” OD tubing, Black

Bottle Cap Plugs and adapter

A-626 Bottle Cap Plug for luer hole, UHMWPE

A-627 Filter Bottle Cap Plug for luer hole, UHMWPE

with 20 µm stainless steel frit

A-628 Bottle Cap Plug for 1/16”, 1/8” or 3/16” hole, UHMWPE

A-629 Filter Bottle Cap Plug for 1/16”, 1/8” or 3/16” hole, UHMWPE

with 20 µm stainless steel frit

P-600 Bottle Cap Adapter for 1/8” hole, PEEK

™

to connect 1/32” OD tubing using F-126 or F-126H ftting (page 18)

BottleCaps

Extremely simple — no threaded ports or fttings

Manufactured from ETFE and Polypropylene

If you are looking for a bottle cap that is quick and easy to use, but

still allows many connection options, we have just what you need!

The Bottle Caps ft standard GL-45 (1 L) or smaller-neck GL-38 (4 L)

glass bottles.

Each cap has three holes. With two of the holes you simply push your

tubing straight through. The third hole, with a luer taper, can be used

for a number of options. Anymale luer (such as a luer-lock syringe) will ft

snugly in this hole, or you can use the A-626 or A-627 Plug. Exceptions

are the A-610 andA-610B Bottle Caps. Please see the note below right.

A self-regulating sparging system can help reduce helium consumption

and improve pump performance. Set this up by pressing your tubing

through the appropriate holes in your bottle cap and attaching each line

to a flter. Sparge your mobile phase with an inert gas (preferably helium)

for 15–20 minutes. Then reduce the outlet pressure of the sparging gas to

a maximum of 5 psi (0.34 bar) and insert a plug (A-626 or A-628) into the

remaining port of the cap. The sparging gas will shut off once the incoming

pressure equals the pressure inside the reservoir. As the mobile phase

is consumed and the internal pressure lowers, sparging gas will enter to

keep the system pressurized and degassed. Please Note: If gas leaks while

pressurizing the bottle, try removing the sealing ring from the bottle, as it

sometimes interferes with the sealing of Upchurch Scientifc bottle caps.

One concern with sparging systems is the possibility of solvent backing up

the sparging inlet line. This can occur if the gas tank completely evacuates

with the regulating valves open, creating a vacuum in the tubing. Solvent

backup may damage sparging system components and cause cross-

contamination of mobile phase reservoirs. To help prevent solvent backup,

install the CV-3010 Inline Check Valve (page 151) along the tubing line that

runs between the gas supply and the solvent bottle.

For a more effcient degassing system, please see the Systec

®

HPLC

Vacuum Degassing Systems on pages 177 – 178.

Please see the Quick-Stop Luer Check Valve on page 151

for another solvent inlet Application Note.

Application Note

The A-610 and A-610B Bottle Caps have a slightly different confguration than

the other caps. One hole accepts 3/16” OD tubing, the typical size used with

a Waters

®

system. The remaining two holes accept 1/8” OD tubing. Unlike

the other caps, the A-610 does not have a tapered luer hole. If desired, use

our A-628 Plug or A-629 Filter Plug for one of the 1/8” holes.

Note