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Instruction leaflet:
Column Protection System

  
     
  
   
EC standard columns for analytical HPLC  
Features  
Analytical column system manufactured from stainless steel
M 8 outer threads on both ends
Combination of sealing element and very fine-meshed stainless steel screen, PTFE ring and fitting adapter
Column heads SW 12, with inner threads M8 x 0.75 and UNF 10-32
(= 1/16" fitting)
As screw-on guard column system we recommend the Column Protection System (see below) used with EC guard column cartridges with 4 mm length.
As built-in guard columns ChromCart® guard column cartridges with 8 mm length can be used with the guard column adapter EC (see below).
Supplied with NUCLEODUR®, NUCLEOSHELL and NUCLEOSIL® spherical silicas

Available standard dimensions of EC columns · please ask for availability of certain phases
ID Length [mm] End fitting design
[mm] 20 30 50 75 100 125 150 200 250 300  
2
3
4
4.6
 
Guard columns for EC columns EC columns with ID Use guard
column holder
    2 mm 3 mm 4 mm 4.6 mm
Column Protection System EC guard column 4/2 4/3 4/3 4/3 REF 718966
ChromCart® guard column system CC guard column 8/3 8/3 8/4 8/4 REF 721359


Guard column systems, accessories and replacement parts for EC columns
Ordering information
Description Pack of REF  
Column Protection System 1 kit
 718966 see figures and description below
 
Guard column adapter EC 1 721359 see figures and description below
 
EC fitting adapter 1 718987
EC column head (nut) 1 718988
EC PTFE sealing ring 4 718992
3-part sealing combination for EC columns 5 kits 718998
For capillaries and further connecting accessories please click here.

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Column Protection System  
Innovative and universal screw-on guard column holder system
Suitable for all analytical HPLC columns with 1/16" fittings		  
Features  
Cartridges filled with specified NUCLEODUR®, NUCLEOSIL® and NUCLEOSHELL HPLC adsorbents
Ideal protection for your analytical main column -> significant increase in column lifetime
Minimized void volume -> suitable also for ultra fast HPLC
Special ferrules -> pressure stability up to 1034 bar (15 000 psi)
Visual contamination check -> in-time changing of the guard column
Guard column length 4 mm, ID 2 mm (for main columns with 2 mm ID) or ID 3 mm (for main columns with 3, 4 and 4.6 mm ID)
UNIVERSAL RP guard columns suitable for all HPLC columns under RP conditions


Content of the Column Protection System
Description REF
Column Protection System 718966
  Content
· Cartridge Holder 1
· Capillaries 2
· Ferrules 3
· Wrenches 2
· Manual 1
   


Replacement parts for the Column Protection System · Ordering information
Description Pack of REF
Ferrules 5 718967
Replacement connector including O-ring 1 718968
Capillary tubes, nuts and metal ferrules 3 718969
Wrench (size 12 and 14 mm) 1 718970
 
EC 4/2 UNIVERSAL RP guard column (for main columns with 2 mm ID) 3 728777.20
EC 4/3 UNIVERSAL RP guard column (for main columns with 3, 4 and 4.6 mm ID) 3 728777.30
 


Visual Contamination Check
The cartridge is fitted with a white filter membrane:
If the membrane is contaminated (discolored), it is advisable to replace the cartridge.
If the contaminants are colorless, replace the cartridge if the pressure rises or the chromatographic performance decreases.

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EC guard column adapter  
Standard guard column built-in adapter system
Suitable for EC columns		  
Features  
Cartridges filled with specified NUCLEODUR® and NUCLEOSIL® HPLC adsorbents
Ideal protection for your analytical EC main column
-> significant increase of column lifetime
Guard column length 8 mm, ID 3 mm (for main columns with 2 and 3 mm ID) or ID 4 mm (for main columns with 4 and 4.6 mm ID)


EC guard column adapter · Ordering information
Description Pack of  REF
EC guard column adapter 1 721359
 


Installation of the EC guard column adapter
1. Unscrew the column head
2. Remove the fitting
3. Unscrew the EC guard column adapter
4. Screw the adapter sleeve onto the column
5. Insert the CC guard column
6. Screw the nut of the guard column adapter in place

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