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C.B.S.

œ

Scientific Co, Inc. 

5

 Semi-Dry 

Blotters 

SECTION 1 
General Information  
 
1.1  

Introduction 

The C.B.S. Scientific Semi-Dry Blotting Systems will transfer Western, Northern, or Southern 
blots reliably and quickly.  These blotting systems have transfer capabilities for gel dimensions up 
to 20cm x 20cm  (Cat. # EBU-4000) or 35cm x 45cm (Cat. # EBU-6000).  The stainless steel 
cathode and platinum-coated titanium anode are durable and corrosion-resistant.  These 
electrodes create a uniform electric field producing excellent transfers onto nitrocellulose, 
supported nitrocellulose, nylon, charged nylon or activated paper substrates.  The upper 
electrode housing is separate from the base, allowing it to be secured at the desired height with 
side hand screws.  This unique design permits several gels to be transferred simultaneously.   
 
In the Semi-Dry system, blotting is accomplished by layering transfer membrane and gel between 
buffer saturated blotting paper, minimizing the amount of buffer required.  To prevent drawing 
current away from the gel during a transfer, the uncovered portion of the cathode is shielded with 
a Mylar® mask.  This shield insures that all applied current passes directly through the gel.  Use 
of the mask will increase transfer efficiency and reduce transfer times up to 50%.     

 

 

1.2  

Specifications 

 

Constructions: 

 

 

Buffer chamber, safety cover   

 

Acrylic 

Electrode panels 

Stainless steel, platinum-coated titanium  

Electrode support panel 

Styrene  

Power cords

 

FR Urethane rated 7500VDC @ 200mA, 
65

°

  Mylar 

masks 

    

Mylar 

 

 EBU-4000 

EBU-6000 

Shipping  
weight 

 

7lbs 

 

15lbs 

Overall Size 
(l)x(w)x(h) cm 

 

9 ¾ x 9 ¾ x 2 ¾  

 

19 ¾ x 17 x 2 ½ 

Maximum Gel Size - cm 

20cm x 20cm 

35cm x 45cm 

Distance between 
electrodes -cm 

 

1cm 

 

1cm 

 
 

1.3  

Safety 

Power to the Semi-Dry Blotter is to be supplied by an external DC voltage power supply that must 
be ground isolated so that the DC voltage output floats with respect to ground.  For any power 
supply used, the maximum specified operating parameters for the units are: 

 
Maximum Limits

 

  EBU-4000 

     EBU-6000 

  50 VDC 

 

 

 

 

 

   50 VDC 

 

         500mA current  

 

 

 

 

        1200mA current 

 55

°

ambient 

temperature 

   55

°

C ambient temperature 

 
 
 

 

 

Current to the unit, provided from the external power supply, must enter the unit through the lid 
assembly, providing a safety interlock to the user.  Current to the unit is broken when the lid is 
removed. 

 Do not attempt to use the unit without the safety lid, and always turn the power 

supply off before removing the lid, or when working with the unit in any way.   Follow 
safety precautions specified by the power supply manufacturer. 
 
 

 
 

 

Содержание EBU-4000

Страница 1: ...Semi Dry Blotting Systems INSTRUCTION MANUAL EBU 4000 EBU 6000...

Страница 2: ...ction 5 1 2 Specifications 5 1 3 Safety 5 Section 2 Description of parts 2 1 Unpacking EBU 4000 or 6000 6 2 2 Components Assembly 6 Section 3 Instructions for Use 3 1 Blotting Unit Preparation 7 11 Se...

Страница 3: ...e highest practical standards of materials workmanship and design C B S Scientific warrants that the product has been tested and will meet or exceed published specifications This warranty is valid onl...

Страница 4: ...endimiento insatisfactorio atribuible a circunstancias fuera del control de C B S Scientific C B S Scientific en ning n caso asumir responsabilidad por da os incidentales o subsecuentes incluyendo en...

Страница 5: ...t passes directly through the gel Use of the mask will increase transfer efficiency and reduce transfer times up to 50 1 2 Specifications Constructions Buffer chamber safety cover Acrylic Electrode pa...

Страница 6: ...nts Blotting chamber with stainless steel cathode and platinum coated anode Safety cover with power leads Mylar sheets for shielding uncovered portion of anode 2 2 Components Assembly SAFETY COVER POW...

Страница 7: ...is why nylon membranes are generally used uncharged nylon being preferable to positively charged nylon Nylon is the membrane of choice because it will bind DNA fragments as small as 50bp and can be ir...

Страница 8: ...g on thickness 3 6mm c Cut eight sheets of 3mm blotter paper Whatman the exact size of the gel Saturate all eight sheets in running buffer d Mylar Mask Prepare a mask by cutting a rectangular hole tha...

Страница 9: ...ng a rectangular hole that is slightly smaller 1 2mm than the gel dimensions b Prepare 8 pieces of Whatman 3mm chromatography paper the exact size of the gel Larger pieces of filter paper may promote...

Страница 10: ...At the conclusion of the run turn power supply off and disconnect leads from blotter Cover will not release unless power cord is removed Remove the cover slowly to catch any part of the gel sandwich...

Страница 11: ...lowed by the gel and 5 more pieces of saturated filter paper Again roll a glass rod over the filter paper stack to compress and remove trapped air bubbles The lid of the apparatus containing the catho...

Страница 12: ...sis 86 315 327 VCH Weinheim Germany 3 Dunn S D Effects of the modification of transfer buffer composition and the renaturation of proteins in gels on the recognition of proteins on Western blots by mo...

Страница 13: ...lpyrocarbonate DEPC treated water for extended periods at 37 C Electrostatic charge and heat affix the conductive platinum surface covering the titanium It can be scratched off or damaged by using sha...

Страница 14: ...t Item EBU 4000 Semi Dry Blotting System Includes power leads and safety interlock 20cm x 20cm EBU 6000 Semi Dry Blotting System Includes power leads and safety interlock 35cm x 45cm MM 4000 Mylar Mas...

Страница 15: ...NOTES...

Страница 16: ...d online ordering www cbsscientific com E mail address sales cbssci com Mailing address C B S Scientific Company P O Box 856 Del Mar CA 92014 Shipping address C B S Scientific Company 10805 Vista Sorr...

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