Microarray Spotting Pins


Point Technologies has developed an advanced spotting pin manufacturing technology with emphasis on "perfect spots" customized to each microarraying application. Electrochemically polished pins provide more consistent, uniform spots, easier cleaning and increased corrosion resistance. (see article Spotting Accelerator - 260 KByte - PDF format).

All pins are available as custom pins in Tungsten, Stainless Steel, Titanium, Nitinol and other metals.

Advantages:
  • Tungsten for better resistance :
    • Almost four times harder than stainless steel
    • More corrosion resistant
  • Electrochemical etching and polishing :
    • Produces no grind marks, which can be stress concentrators
    • Decrease surface tension
    • More hydrophobic and more predictable as far as the quantity of material it picks up and deposits

Split (Quill) Pins adapted to classical Printheads



  • Radiused Tips for optimized drop formation
  • Tip diameters : 74µm, 89µm, 119µm, 147µm, 175µm
  • Spot diameters : 75µm to 215 µm
  • Uptake volumes : 0.25µl to 0.64 µl
  • Delivery volumes : 0.5?l to 2.5?l

PT AcceleratorTM Split Pins PTL AcceleratorTM Split Pins
Pin Length (OAL)1,062" Pin Length (OAL)1,75"
Pin Diameter 0,061“ Pin Diameter 0,061“
Material 99.9% Tungsten Material 99.9% Tungsten

Catalog Number Tip Diameter Spot Diameter
PT/PTL 2000 65µm (0.0025") 67-90µm
PT/PTL 2500 74µm (0.0029") 75-100µm
PT/PTL 3000 89µm (0.0035") 90-120µm
PT/PTL 4000 119µm (0.0046") 120-155µm
PT/PTL 5000 147µm (0.0057") 150-215µm
PT/PTL 6000 175µm (0.0069" ) 180-215µm

Cleaning protocol for tungsten pins (80 KByte - PDF Format)


Solid Pins adapted to classical Printheads

  • Polished Tips for optimized drop formation
  • Tip diameters : 50µm, 100µm, 200µm, 300µm, 400µm, 500µm, 600µm
  • Spot diameters : 75µm to 450 µm
PT AcceleratorTM Solid Pins PTL AcceleratorTM Solid Pins
Pin Length (OAL)1,062" Pin Length (OAL)1,75"
Pin Diameter 0,061“ Pin Diameter 0,061“
Material 99.9% Tungsten Material 99.9% Tungsten

Catalog Number Tip Diameter Spot Diameter
PTS/PTLS 50 50µm (0.0020”) 75-100um
PTS/PTLS 100 100µm (0.0039”) 100-125um
PTS/PTLS 200 200µm (0.0079”) 140-150um
PTS/PTLS 300 300µm (0.0118”) 220-250um
PTS/PTLS 400 400µm (0.0158”) 280-300um
PTS/PTLS 500 500µm (0.0197”) 360-400um
PTS/PTLS 600 600µm (0.0236”) 430-450um
  • Solid pin spot diameters can be customized by use of hydrophilic/hydrophobic dip coatings/plating and by zonal surface texturing.
  • All pins are available as custom pins in Stainless Steel, Titanium, Nitinol and other metals
 
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