Online Form - LMA MS

Linear Microelectrode Array (LMA) - Multi Shank
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  1. Principal Investigator name:(*)
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  8. General Specifications

    The Multi-Shank LMA design is ideal for acute or chronic applications. Each shank can have up to 24 electrode sites, therefore multiple connectors may be needed. MicroProbes for Life Sciences may also employ the 36 contact Nano Omnetics connector, model A79022-001, which is also compatible with most headstage manufacturers.

    You will need to specify the number of shanks (S) as well as the specifications associated with each prong. If no SS tube is required, which may be the case for chronic applications, then specify 0 for option (b).

    Outside Diameter in microns of the Polyimide Probe - Table 1
      4 6 8 10 12 14 16 18 20 22 24
    Reference measurement: micron (µm)
    12.5 µm 198 198 198 218 218 218 218 241 241 264 264
    25 µm 198 198 218 218 241 241 264 264 292 325 325
    37.5 µm 218 218 241 241 264 264 292 325 325 370 370
    50 µm 241 264 292 325 325 370 370 410 454 505 560
    Outside Diameter of the optional Stainless Steel - Table 2
      4 8 16 24
    Any number of channels in between will use the larger diameter tubing. For example, a 12 channel LMA with 12.5um contact sites will use a 0.018" OD tubing.
    12.5 µm 0.016" OD 0.016" OD 0.018" OD 0.020" OD
    25 µm 0.016" OD 0.016" OD 0.018" OD 0.020" OD
    37.5 µm 0.016" OD 0.016" OD 0.020" OD 0.025" OD
    50 µm 0.016" OD 0.018" OD 0.025" OD 0.0335" OD
    Impedance value chart
    Diameter Impedance
    Typical Impedance @ 1 Kilohertz
    12.5 µm Pt/Ir 0.5 to 0.8 MΩ
    25.0 µm Pt/Ir 0.3 to 0.5 MΩ
    37.5 µm Pt/Ir 0.2 to 0.4 MΩ
    50.0 µm Pt/Ir 0.1 to 0.3 MΩ
    LMA-MS References
    • a = Length of polyimide tube (25 mm max. for 12.5 µm wire)
    • b = Length of Stainless or Microfill Tube.
    • c = Electrode size (determined by slection of wire diameter).
    • d = Distance between contacts.
    • n = Number of recording sites.
    • X = Diameter of polyimide tube (refer to the table 1).
    • Y = Diameter of Stainless Steel tube is approx. 50% larger than Polyimide tube.
    LMA-MS References
    Design Specifications Model LMA-MS-n-a-Y-b-c-d-X-s-Rs-Ref-Gr:
  9. 1. Metal type and electrode site diameter:(*)
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  10. 2. Number of recording sites per shank(*)
    Numeric value
    (4 to 24)
  11. 3. s: Number of shanks(*)
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  12. 4. n: Total number of sites
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    (question 2. X question 3.)
  13. 5. Rs: Distance between shanks(*)
    Numeric Value
    (mm)
  14. 6. a: Length of the polyimide tube(*)
    Numeric value
    (mm) (25mm max or 15mm max for 12.5 µm wire)
  15. 7. c: Electrode size(*)
    Numeric value
    (µm) (determined by selection of wire diameter)
  16. 8. d: Distance between contacts(*)
    Numeric value
    (µm)
  17. 9. X: Diameter of the polyimide tube(*)
    Numeric value
  18. 10. Y: Include additional rigid tube for extended length and support?(*)
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  19. This field is required
  20. b: Length of stainless steel or microfil tube(*)
    Numeric value
  21. 11. Ref: Include a reference connection?(*)
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  23. mm off the base of the connector
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  25. 12. Gr: Include ground connection?(*)
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  27. mm extending from the connector
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  29. Your Custom Design and Layout Sheet

    Please upload your file with your custom specifications (if applicable):

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  31. Connector(s)(*)









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  32. (provided by the customer)
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  33. About your order
  34. How many of this LMA - Multi Shank design do you wish to order(*)
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  35. Special requirements
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