SIS Catalog Online

Dry-Ice & LN2 Cooled Foreline Traps

F54

Scientific Instrument Services, Inc.

™

Phone: 908-788-5550

www.sisweb.com/catalog/08/F54

Liquid Nitrogen Cold Trap, Liter

Features:

•

Electropolished 304 Stainless Steel Construction

•

Electropolished cold thimble and trap interior. Provides

resistance to corrosion, and superior vacuum

compatibility. Reduces the effect of radiant heat on the

cold surface.

•

Easily removable cold thimble

Dry-Ice Cooled Foreline Trap

D

ry-ice and alcohol is all that is needed to cool this cold trap to -75°C, thus
trapping most volatile materials. Holds 3 quarts of dry-ice slurry (dry-ice and
alcohol). Holding time is approximately 20 hours depending on vacuum

through-put. The cold well is visible during operation to monitor condensation. Defrost
and clean-up is easily accomplished.

For durability and ease of cleaning, the outer body and cold well are electro-polished

ID/OD 304 stainless steel. Viewing ring and lid are clear acrylic plastic.

S

.I.S.

™

cold traps are on the “cold thimble” design. The surface of the cold

thimble containing liquid nitrogen at -187°C, being exposed to the vacuum sys-
tem, rapidly condenses molecules in the vapor phase. This action

provides the trapping effect, and cryopumping especially for water vapor the most
common condensable in vacuum systems. Pumping speed for water vapor at the
trapping surface is 95 liters/sec. per sq. inch. The vapor pressure for water vapor at the
cold thimble is reduced to 10

-21

Torr, “theoretical,” producing a low base vacuum. Other

gases found in vacuum processes will be sublimated or liquefied at the cold trapping
surface. This effect provides a convenient trapping or collecting mechanism.

Viewing Ring

Part No.

Ports

A

1050-006 Part #1050006--Click to order
Current Price: $915.00
Unit of Measure: EA
Est. Ship Weight=5 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.

1/2"

10 3/4"

1050-001 Part #1050001--Click to order
Current Price: $915.00
Unit of Measure: EA
Est. Ship Weight=5 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.

3/4"

10 3/4"

1050-002 Part #1050002--Click to order
Current Price: $935.00
Unit of Measure: EA
Est. Ship Weight=5 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.

NW 16 x 3/4"

11 1/16"

1050-003 Part #1050003--Click to request quote
Obsolete part number. New number is DIFT25. Please call for ordering (1-908-788-5550).
Unit of Measure: EA
Est. Ship Weight=5 lbs

NW 25 x 3/4"

11 1/16"

1050-004 Part #1050004--Click to order
Current Price: $960.00
Unit of Measure: EA
Est. Ship Weight=5 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.

NW 40 x 3/4"

11 1/16"

Part No.

Description

LNT-4-100K Part #LNT4100K--Click to order
Current Price: $540.00
Unit of Measure: EA
Quantity in Stock=1

4" Diameter Body Inline LN2 ATrap
with NW25 Nipples, 4" Diameter by
11.5" Overall height

LNT-4-150K Part #LNT4150K--Click to order
Current Price: $550.00
Unit of Measure: EA
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.

4" Diameter Body Inline LN2 ATrap
with NW40 Nipples, 4" Diameter by
11.5" Overall height

Related information may be found on the following pages of our web site:

Page	Parts
Liquid Nitrogen Cold Trap, Liter	LNT4100K, LNT4150K
Dry-Ice Foreline Trap	1050001, 1050002, 1050003, 1050004, 1050006

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