1. No category

Apparatus for Sample Concentration
Recommended by EPA Protocol
The Kudema-Danish apparatus was developed for concentrating materials dissolved in volatile solvents. It has been
widely used in pesticide analyses .
To prepare, charge the flask with material to about 40% to 60% of nominal
capacity.. Initial small losaes of material
can be prevented by wetting the column
with about 1 ml of solvent before concentration is begun. Typical solvents are
petroleum ether and hexane, although
many others can be used .
Boiling chips should be added and the
assembly set over a vigorously boiling
water bath . Maintain the water level just
below the lower joint, with the apparatus
mounted so that the lower rounded surface of the flask is bathed In steam . With
volatile solvents, use the apparatus in a
hood . Heavier fractions reflux and concentrate in the receiving vessel .
Plastic Ciips/TeflonW Sleeves
Maao Kud.rna-Danish
Corrcentretor, 6-48a6
Macro Kuderna-Danlsh
Concentrator. 6-4704
Macro Kuderna-Danish
Concentrator
with ground glass joints
Includes a 310mm, 3-ball Snyder column, 500ml flask, and 15ml receiving
vessel graduated from 0-4ml in 0 .1 ml
units, 5ml line, 6-15m1 in 0.5ml units .
6-4685 Macro Kudema-Danish
concentrator $156
Macro Kuderna-Danish
Concentrator
with micro connectors
Includes a 218mm, 3-ball Snyder caF
umn, 500m1 flask, 15mi receiving ves•
sel, and 2 micro connectors (Cat . No.
6-4700) . Receiving vessel is graduated
in 0 .1 ml units to 4m1, 5ml line, 0 .50
units from 6m1 to 15m1 .
6-4704 Macro Kudema-Danish
concentrator $158
Replacement Parts and Other
Components for 6-4685 Concentrator
Plastic clips fit over ground glass joints
to ensure secure connections. Use full
length Teflon sleeves in ground glass
joints for inert, tight seals without the
possibility of frozen joints . Clips fit the
connections on our Kudema-Danish apparatus, and Teflon sleeves fit the Kudema-Danish or Soxhlet apparatus .
Cat No.
Prkce
310mm . r 24/40
8-4728
$37
Description
$72
Macro Condenser, m .
20mm screwthreads
Macro Snyder column .
2 ball, 170mm,
Mecro Snyder column,
2 ba8, 230mm, ii24/40
Macro Snyder column,
8-4727
3 baN, 310mm . ><24/40
8-4893
$95
Flesk, 260ml, top i
24/40, bottom f 19/22
6-4729
$42
Flask, 600m1, top ii
24/40, bottom t 19/22
8-4710
$48
8-4730
$68
24/40, bottom f 19/22
Receivinp .vessel,
4m1, if 19/22
Receiving vessel .
1 oml, j 19/22
Receiving vessel,
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http://legacy.library.ucsf.edu/tid/hbj79e00/pdf
6-4724 $511
8-4705 f17 ~
;
20mm screwthreads
8-470a fN 1
1
8-4887
$38
20mm acrewthreads
6-4706 S611
6-4895
$38
lask,
20mm screwthreads
6-4709 $51
$38
Receiving vsssel, 4ml .
20mm screwthreads
6-4702 0
8-4884
6-4731
$39
Teflon full length sleeves .
I 19/22, pk. of 6
8-4782
$30
Receiving vessel, m .
Teflon full length steeves .
>f 24/40, pk. of 6
8-4781
$34
Microconnector.
iC 19/22, pk. of 6
8-47t93
$13
Plastic clips,
if 24/40, pk. of 6
6-4764
$13
Plastic ciips,
182 1
20mm screwthreads
Flask, 5 mi,
Springs, 1/2', pk . of 20
SLti'Ck-C 0 r('
8-4725 f39 ,
Macro Snyder column,
3 balt, 218mm,
20mm screwthreads
Receiving vesa , ,
20mm screwthreads
Receiving vessel, 16ml,
20mm screwthreads
Receiving vessel,
26ml, i 19/22
Cat. No
Flask, 250m1,
Flask. 1000m1, top I
16ml, iF 19/22
Order plastic clips and Teflon sleeves from
the 91sts of replacement parte on these two
pages.
Replacement Parts and Other
Components for 6-4704 Concentrator
Desalptlon
Macro Condenser,
20mm screwthreads
20mm to 20mm, pk . of 8
8-4703 fM
8-4707 $4
8-4728 fii
8-4700 fN
}
,
Apparatus for Sample Concentration
Recommended by EPA Protoco l
20mm
Micro
Connecto r
13mm
-0- Micr o
Connecto r
20mm
Screw
Thread -+
I
Micro 8nyder
Column
8-4894
Micro Kuderna-Danlah
Concentrator. 6-4718
Micro Kuderna-Danish
Concentrator
with ground glass joint s
Includes a 135mm micro condenser,
40m1 flask and 2m1 receiving vessel
graduated from 0 to 0 .3m1 in 10µI units,
0 .4ml line, 0 .5 to 2 .Omt in 100µ1 units .
6-4718 Micro Kudema-Danish
concentrator $98
Description
Micro Condenser,
Cat. No.
Prk e
135mm, 819/22
6-4721
$3 7
2 ball, 137mm, ir 19/22
Micro Snyder column ,
3 ball, 188mm, 719/22
Flask. 40m1, if 19/22
8-4894
$7 2
8-4720
$6 9
6-4722
Flask . 250m1, ir 19/22
Receiving vessel, 2m1 ,
if19/22
6-4719
$4 2
$42
8-4723
$3 7
6-4687
$3 8
6-4695
B-4711
$38
6-4762
$3 0
Micro Snyder column .
Receiving vessel. 4m1.
Receiving vessel, 10ml,
i 19/22
Springs, 1/2', pk . of 20
Teflon fulllength sleeves ,
>T 19/22, pk . of 5
Plastic dipa,
819/22, pk of 5
Micro Snyder
Column, 6-469 6
Micro Kuderna-Danish
Concentrator
with micro connector s
Includes a 112mm micro condenser,
40ml flask, and 2ml receiving vessel
graduated from 0 to 0 .3m1 In 10µl units,
0 .4ml line, 0.5 to 2 .Oml in 100µl units .
Positive, grease-free connections. Only
Teflone contacts the sample.
8-4888 Micro Kudema-Danish
concentrator $10 0
Replacement Parts and
Other Components for
6-4718 Concentrator
619/22
Micro Kuderna-Danish
Concentrator, 8-468 8
8-4763
$2 5
$13
Replacement Parts and
Other Components for
6-4688 Concentrato r
Description
Micro Condenser, 112mm,
20mm scrowthresds
Micro Snyder column,
2 bell, 126mm,
20mm screwthreads
Micro Snyder coiumn,
3 ball, 168mm,
20mm scrowlhnrads
Cet . No.
Price
8-4897
$3 9
8-4717
$5 9
Working to make science work for you .
8-4696
$5 9
8-4898
$2 6
6-4708
$4 6
8-4889
$3 8
0-4702
$3 9
8-4703
$39 1
8-4899
$5 2
20mm to 20mm6 pk of 8
8-4700
$6 5
Micro connector,
13mm to 20mm, pk, of 8
6-4701
$5 2
Flask, 40ml, 13mm and
20mm screwthreads•
Flask, 260ml,
20mm screwthreads
Receiving vessel, 2ml,
13mm screwthreads
Receiving vessel, 4m1 ,
20mm screwthreads
Receiving vessel, 10m1 ,
20mm screwthreads
Micro connector,
13mm to 13mm, pk . of 8
Micro connector,
AWhen joining Cat . Nos . 6-4702 or 6-4703 to
the 40m1 flask lCat. No. 8-4698), use 13mm
to 20mm mloro connectors (Cat. No. 8-4701).
http://legacy.library.ucsf.edu/tid/hbj79e00/pdf
18 3
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