96 Solid Pin Multi-Blot Replicators


V&P Scientific believes that our unique MULTI -BLOT™ Replicator System will revolutionize the way you do research.  If your research involves screening, replicating or assaying numerous specimens or substances our replication system will reduce your labor, increase your throughput and save you money.  Although our Replicators are known by many names (Frogger, Dotter, Gridder, Hedgehog, Stamper, Spotter and Pin Tool) you will find them very useful in transfer liquids from one microplate to another or in gridding out macroarrays.  


A larger volume (1 ul to 2 ul) of liquid is also transported on the sides of the pins, however this liquid is only transferred if the pins are submerged in another liquid.  The volume of liquid transported on the sides of the pin is also dependent upon the depth to which the pin is wetted.  This method greatly simplifies making one or a hundred copies and it is very rapid.  The Replicator pins are made from durable stainless steel and are quickly sterilized by alcohol/flame or bleach procedure for rapid turn around between master plates.


Click here for a document showing Macro-arrays prepared using V&P Scientific’s MultiBlot Repicators and MultiPrint registration devices.

Click here for a list of published articles that cite using the products on this page.



Transfer from 0.02 ul to 3 ul of Specimen in 96 Pin Formats:

  • cDNA
  • DNA
  • RNA
  • Antibiotics
  • Antibodies
  • Antigens
  • Drugs
  • Ligands
  • PCR Products
  • Receptors

The photo on the right illustrates the various solid pins we offer and the volume of their hanging drops.  You can find out more about these and other pins we make on the Pin Tool page. 


Transfer Cultures, Genomic DNA or cDNA Libraries:

  • Cosmids
  • Mutants
  • Plasmids

  • YCAs

  • Recombinant clones

A unique feature of these replicators is the presence of two guide pins that are used to index the replicators to registration accessories (patent pending).  These guide pins fit into alignment holes in the LIBRARY COPIER™ to align the Replicator pins to microplate wells.  The guide pins also fit into alignment holes in the COLONY COPIER™to align the replicator pins to agar surfaces or membranes in Nunc Omni Trays.  The arrangement of alignment holes facilitates the construction of high density (1536 blots) offset arrays or grids. 

The guide pins also fit into alignment holes in the MULTI-PRINT™ to align the replicator pins to large membranes.  The arrangement of alignment holes facilitates the construction of high density arrays on grids on large membranes. The ability to easily create high density colony arrays on agar, cDNA expression arrays or dot blots on membranes simplifies large screening or replicating projects and results in significant savings in assay reagents, disposable plasticware, membranes and pipette tips. Previously only laboratories with a $50,000 robotics work station could take advantage of the high throughput of high density arrays. Now even small labs can.

Even labs with robotic work stations use our hand held system because it is so affordable and faster to use for most applications.

  • Use it when you need data immediately and the robot is tied up with a big project

  • Use it for those projects that are so small it doesn't pay to prepare for the robot

  • Use it to develop pilot assay procedures for robotic assays 

  • Now every technician has the power of a workstation in the palm of their hand





Pins Placed In Standard 96 Well Spacing

  • Universal application with all 96 well plates

  • Gives flexibility in volume delivered

Available In Multiple Pin Diameters:  

1.19 mm diameter pins
96 pin = VP 409

Delivers ~ 100 nl hanging drop

1.58 mm diameter pins
96 pin = VP 408

Delivers ~200 nl hanging drop

2.36 mm diameter pins
96 pin = VP 407

Delivers ~1.5 ul hanging drop

3.17 mm diameter pins
96 pin = VP 407A

Delivers ~3.0 ul hanging drop

Guide Pins

  • Registers MULTI-BLOT™ Replicator to:


  • Facilitates copying of 96 well libraries

  • Facilitates the construction of 384 well libraries from 96 well libraries and vice versa

  • Keeps pin in center of well so droplets are not knocked off


  • Facilitates production of high density microorganism arrays (from 96 to 1536 colonies) on agar or membranes in an Omni Tray

  • Facilitates picking colonies


  • Facilitates production of multiple high density dot blot arrays (from 96 to 1536 blots/ footprint) on large membranes

Stainless Steel Replicator Pins

  • Can be flame sterilized for rapid reuse

  • Can be bleach sterilized and won't rust or corrode

  • More economical than using disposable tips

Replicator Pins, 22 mm Long
  • Facilitates reaching and stirring bottom of source wells

  • Facilitates depositing droplets on bottom of Omni Trays

  • Facilitates obtaining samples from all 96 well microplates

Pin Tips on Same Plane

  • All pins assured of delivering their droplets

Anodized Aluminum Pin Plate, 9.9 mm Thick
  • Acts as large heat "sink" to cool pins rapidly for reuse

  • Anodizing protects plate from corrosion

Anodized Aluminum Handle, 16.5 mm Diameter
  • Dissipates heat, easy to grasp and manipulate

  • Anodizing protects handle from corrosion


*Blots won't overlap in moderate or high density arrays.
Can make over 3000 copies from a single master plate.

96 Pin Replicator has 1.19 mm diameter pins and delivers ~ 100 nl hanging drop VP 409
96 Pin Replicator has 1.58 mm diameter pins and delivers ~200 nl hanging drop VP 408
96 Pin Replicator has 2.36 mm diameter pins and delivers ~1.5 ul hanging drop VP 407
96 Pin Replicator has 3.17 mm diameter pins and delivers ~3.0 ul hanging drop VP 407A

  Membrane Macroarray Starter Kit


For your convenience, V&P Scientific has combined the essential components of our 96 pin MULTI-BLOT™ replication system into a starter kit to make 4 identical 864 feature Macroarrays at once. The equipment required to perform the basic Macroarray application are present at a 5% discount.  Included in the starter kit are the following:

One, 96 Pin MULTI-BLOT™ Replicator VP 409
One, V&P Pin Cleaning Solution Bottle VP 110
One, Package Of Lint Free Blotting Paper VP 522
One, Pyrex Alcohol Reservoir With Lid VP 420
One, Clear Overlay Reading Mat For 864 And 1536 Arrays VP 430
One case of 5, Plastic Bleach Or Water Reservoirs VP 421
One, Pin Cleaning Brush VP 425
One, 30 cm by 3 meter Roll Of Hybond N Nylon Membrane VP 503
One, Package Of Ten Blotting Papers 22 cm by 32 cm VP 521V

  VP 407R - Tissue Homogenization with Replicators


A recent additional application for our Replicators is to function as a mortar and pestal to homogenize tissue for DNA extraction.  When used with a PCR plate as a Pestle, the pins of a VP 407 function as the Mortar to grind up tissue and release the DNA.  The pin diameter of the VP 407 matches that of the inside diameter at the tip of the PCR plate creating a "perfect fit" for homogenizing tissue.  With a few simple strokes, fruit fly tissue (Drosophila Melanogaster) is completely homogenized.  Hence the name the "Fly Squisher".  It may also be useful in homogenizing other tissue to release DNA.



  Custom Light Weight (Swiss Cheese Style) Replicators


One of our customers requested an ultra light weight Multi-Blot Replicator for a particular application so we designed a Replicator base with all of the excess aluminum removed.  We call it the "Swiss Cheese Style".  If you need a light Replicator just request a custom "Swiss Cheese."  If you use your replicators constantly throughout the day as many labs do.  You will come to appreciate a light weight replicator.  We can also make them with  384 pins and with slot pins.


  Hydrophobic & Lipophobic Coating of Pins


All of the above pins can also be obtained with a hydrophobic/lipophobic coating.  Just adding an H to the above pin designates that pin as a hydrophobic/lipophobic coated pin.  This coating is metallic and only a few angstroms thick so it does not effect the basic dimensions of the pins.  These coated pins are very useful in handling solutions with proteins or lipids that may stick to naked stainless steel.  Click here for more details on the nature of our hydrophobic/lipophobic coating and the coating process.

If you are transferring DNA, cDNA or other materials in high surface tension solutions you will find that using our new V&P Pin Cleaning Solution will greatly increase the precision of delivery.  For an explanation see the FAQ page and the V&P Pin Cleaning Solution page.

Please visit this hyperlink for Pin Tool Data And Charts.

Click here for a list of published articles that cite the products on this page.




We suggest you buy a few inexpensive accessories that will make the Replicators more useful, easier, safer and more reproducible. 

The VP 381 is a Registration Device that aligns the Replicator pins to the center of the wells.  This is very important as you do not want the pins to touch the side of wells as you remove the pins because that will knock off the hanging drop at the pin tip.  The VP 381 LIBRARY COPIER™ is also used with our 96 pin Replicators to re-array from four, 96 well plates to one, 384 well plate or vice versa, to break out samples from one, 384 well plate to four, 96 well plates.

The VP 382 MULTI-PRINT™ is a registration device that allows you to make membrane arrays in an area the size of a standard microtiter plate with our Replicators.  Either four, 384 well plates or nine, 96 well plates can be arrayed into a 1536 or 864 array on the membrane.

After arraying from four, 384 well plates to one, 1536 membrane array (or nine, 96 well plates to one, 864 membrane array), the VP 430 Reading Mat helps locate which mother plate well produced a positive spot on the membrane array.

The VP 420 is a Glass Alcohol Reservoir that is used in the sterilization of the Replicators by flaming.  Some labs use plastic reservoirs, but if flaming alcohol drops into them the plastic burns, dumping flaming alcohol all over the counter.  This covered dish is also useful for storing the alcohol as well as VP 110 Pin Cleaning Solution (below) for reuse.  

The VP 425 is a Pin Cleaning Brush that is used to keep the Replicator pins clean so they will carry the same amount of liquid each time.   

Our VP 110 is a Pin Cleaning Solution that is used to clean and treat the pin tips when they can't be flamed.  

Integral to the cleaning process of all slot pins is the blotting step between baths.  Lint particles in the slots or pin tips, from blotting onto standard paper towels, will interfere with the loading and unloading of liquid.  The VP 522 is a Lint Free Blotting Paper that doesn't transfer lint particles to the slot pins as many blotting papers or paper towels can do.  We strongly recommend that you use these blotting pads placed over several layers of paper towels. 

These accessories are also found in the Basic Membrane Array Started Kit VP OK14 at a 5% discount.


  Cleaning Pins


The most important aspect of using pin tools is to start with clean pins and then keep them clean so they will consistently deliver the same volume.  We recommend our Pin Cleaning Solution (VP 110) to clean the pin of protein and other residue buildup before you start an assay.  To quickly and efficiently remove the previous transfer from the pin we have a wide variety of manual and robot wash reservoirs ranging from disposable polypropylene reservoirs (VP 576D) to reusable wash reservoirs, flowing reservoirs and fountains to clean  96, 384 and 1536 pin tools.  The robot wash stations are also adapted so the blotting station is part of the washing station thus reducing the cleaning cycle time and the number of robot stations required for the cleaning process.  We also have other independent blotting stations (VP 540D) and VP 522.

Integral to the cleaning process of all pins is the blotting step between baths.  Lint particles in the slots or on pin tips, from standard paper towels, will interfere with the loading and unloading of liquid.  We have solved this problem.  The VP 540DB blotting system is a tray with the standard microplate foot print that contains a super absorbent polypropylene pad covered by a Lint Free Blotting Paper.  We strongly recommend that you use this or our other lint free blotting systems.


Click here for a list of published articles that cite using the products on this page.



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