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  1. SALE Wehnelt apertures
    Wehnelt Apertures
    Replaceable apertures for the Wehnelt cylinder can be supplied to fit some microscopes. Special prices valid while stocks last. 
    Average lead time: 40 to 55 days

    From £81.82

    Average lead time: 40 to 55 days
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Range
  1. 2mm - 1µm 6 items
  2. 2mm - 100nm 6 items
  3. 14.0kW 1 item
  4. Pioloform films 3 items
  5. Plane spacing 3 items
  6. Plasticisers 1 item
  7. Polishing 2 items
  8. Resin solvents 1 item
  9. Resins 3 items
  10. Room temp applications 3 items
  11. SEM specimen stubs 66 items
  12. SEMClip specimen mounts 16 items
  13. Serial section 2 items
  14. Silicon aperture frames 1 item
  15. Silicon nitride coated discs 1 item
  16. Silicon nitride membranes 5 items
  17. 0 - 50g 1 item
  18. 0 - 120g 2 items
  19. 0 - 150g 2 items
  20. 0 - 200g 3 items
  21. 0 - 250g 1 item
  22. 0 - 300g 2 items
  23. 0 - 600g 3 items
  24. 0 - 1000g 2 items
  25. 0 - 1500g 3 items
  26. 0 - 2000g 2 items
  27. 0 - 2600g 1 item
  28. 0 - 3000g 2 items
  29. 0 - 5kg 2 items
  30. Standard AC Mode Cantilevers 5 items
  31. Soft AC Mode Cantilevers 4 items
  32. Contact Mode Cantilevers 2 items
  33. Gold Coated Cantilever 7 items
  34. High Frequency AC Mode Cantilevers 3 items
  35. Conductive Cantilevers 1 item
  36. Magnetic Cantilevers 1 item
  37. Ultrasharp Cantilevers 2 items
  38. Carbon Nanofiber Cantilever 2 items
  39. Multiple Cantilevers on One Chip 2 items
  40. AD Series 8 items
  41. BD Series 1 item
  42. VR Series 3 items
  43. 1.0kW 1 item
  44. 1.75kW 1 item
  45. 2D array standards 3 items
  46. 3.2kW 1 item
  47. 4.5kW 1 item
  48. 6.0kW 1 item
  49. 9.0kW 1 item
  50. Abrasive powder 1 item
  51. Abrasives 5 items
  52. Accessories 3 items
  53. Acrylic Resins 8 items
  54. Additives 2 items
  55. Adhesives 15 items
  56. Anti-capillary 3 items
  57. Backscatter reference 2 items
  58. Bags 2 items
  59. Beakers 4 items
  60. Biology 5 items
  61. Boards & mats 3 items
  62. Boats 4 items
  63. Buffers 2 items
  64. Calibration certificates 5 items
  65. Carbon films 3 items
  66. Circular 8 items
  67. Citifluor range 2 items
  68. Cleaning 7 items
  69. Critical dimension 2 items
  70. Cryo applications 5 items
  71. Cryo-Aprons 6 items
  72. Cryo Face Shield 1 item
  73. Cryo-Gaiters 2 items
  74. Cryo-Gloves 14 items
  75. Cryo-Kits 10 items
  76. Cryosectioning 1 item
  77. Desiccators 3 items
  78. Diffraction reference standards 2 items
  79. Dimpler 2 items
  80. Disc apertures 44 items
  81. Dishes 3 items
  82. EDX reference standards 10 items
  83. Electronic 6 items
  84. Embedding media 3 items
  85. Embedding moulds 11 items
  86. Embedding resin 3 items
  87. Epoxy resins 7 items
  88. FEI/Philips compuStage 1 item
  89. Finder grids 13 items
  90. Fixatives 7 items
  91. Formvar carbon films 3 items
  92. Formvar films 3 items
  93. Geller reference standards 4 items
  94. General purpose 1 item
  95. Hardeners 2 items
  96. High precision crossover 4 items
  97. High precision grade 9 items
  98. Holey carbon films 3 items
  99. Hotplates 2 items
  100. Identigrids 1 item
  101. Kits and other tools 3 items
  102. Labels 3 items
  103. Lacey carbon films 3 items
  104. Large diameter 2 items
  105. Light element support grids 1 item
  106. Magnification standards 5 items
  107. Magnification standards - certified 5 items
  108. Markers 2 items
  109. Maxtaform finder grids 3 items
  110. Medical grade 2 items
  111. Membrane boxes 3 items
  112. Micrometer 3 items
  113. Microtome blades 5 items
  114. Mounting compound 6 items
  115. Multi hole apertures 2 items
  116. Nuclepore filters 3 items
  117. Paints 9 items
  118. Pestle & mortar 2 items
  119. Pins & probes 8 items
  120. Polystyrene spheres 5 items
  121. Precision Wire Saw 3 items
  122. Processing chemicals 3 items
  123. Protective 6 items
  124. Punches 1 item
  125. Quantifoil 13 items
  126. Rectangular 10 items
  127. Resolution standards 18 items
  128. Resolution standards - certified 3 items
  129. Scalpels and blades 21 items
  130. Scribing and cleaving 5 items
  131. Spare targets 23 items
  132. Spray apertures 4 items
  133. Square 7 items
  134. Square holes 4 items
  135. Square mesh 2 items
  136. Staining accessories 8 items
  137. Staining jars 3 items
  138. Staining racks 1 item
  139. Staining trays 1 item
  140. Stainless steel discs 1 item
  141. Stains 13 items
  142. Syringes & pipettes 5 items
  143. Tabbed grids 1 item
  144. Tabs & discs 6 items
  145. Tantalum apertures 2 items
  146. Tapes 4 items
  147. Thin film apertures 2 items
  148. Top hat apertures 2 items
  149. Triple slot 1 item
  150. Tripod Polisher 4 items
  151. Tubes 3 items
  152. Tweezer kits 3 items
  153. Tweezers for stubs 3 items
  154. Ultra-smooth carbon foils 1 item
  155. Ultra-thin carbon films 1 item
  156. Vitrobot 5 items
  157. Wehnelt apertures 1 item
  158. Xray fluorescence standards 5 items
  159. Adventurer Series 2 items
  160. Explorer Series 3 items
  161. PR Series 2 items
  162. Loose resins 10 items
  163. Activated resins 7 items
  164. HIC resins 7 items
  165. IEX resins 18 items
  166. Magnetic resins 10 items
  167. SEC preparative resins 4 items
  168. Affinity resins 8 items
  169. Protein ladders 2 items
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PRICE & AVAILABILITY: Please note that while we are working closely with our suppliers to minimise any global supply chain issues, prices and availability may be subject to change at short notice.
FILTERS
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Range
  1. 2mm - 1µm 6 items
  2. 2mm - 100nm 6 items
  3. 14.0kW 1 item
  4. Pioloform films 3 items
  5. Plane spacing 3 items
  6. Plasticisers 1 item
  7. Polishing 2 items
  8. Resin solvents 1 item
  9. Resins 3 items
  10. Room temp applications 3 items
  11. SEM specimen stubs 66 items
  12. SEMClip specimen mounts 16 items
  13. Serial section 2 items
  14. Silicon aperture frames 1 item
  15. Silicon nitride coated discs 1 item
  16. Silicon nitride membranes 5 items
  17. 0 - 50g 1 item
  18. 0 - 120g 2 items
  19. 0 - 150g 2 items
  20. 0 - 200g 3 items
  21. 0 - 250g 1 item
  22. 0 - 300g 2 items
  23. 0 - 600g 3 items
  24. 0 - 1000g 2 items
  25. 0 - 1500g 3 items
  26. 0 - 2000g 2 items
  27. 0 - 2600g 1 item
  28. 0 - 3000g 2 items
  29. 0 - 5kg 2 items
  30. Standard AC Mode Cantilevers 5 items
  31. Soft AC Mode Cantilevers 4 items
  32. Contact Mode Cantilevers 2 items
  33. Gold Coated Cantilever 7 items
  34. High Frequency AC Mode Cantilevers 3 items
  35. Conductive Cantilevers 1 item
  36. Magnetic Cantilevers 1 item
  37. Ultrasharp Cantilevers 2 items
  38. Carbon Nanofiber Cantilever 2 items
  39. Multiple Cantilevers on One Chip 2 items
  40. AD Series 8 items
  41. BD Series 1 item
  42. VR Series 3 items
  43. 1.0kW 1 item
  44. 1.75kW 1 item
  45. 2D array standards 3 items
  46. 3.2kW 1 item
  47. 4.5kW 1 item
  48. 6.0kW 1 item
  49. 9.0kW 1 item
  50. Abrasive powder 1 item
  51. Abrasives 5 items
  52. Accessories 3 items
  53. Acrylic Resins 8 items
  54. Additives 2 items
  55. Adhesives 15 items
  56. Anti-capillary 3 items
  57. Backscatter reference 2 items
  58. Bags 2 items
  59. Beakers 4 items
  60. Biology 5 items
  61. Boards & mats 3 items
  62. Boats 4 items
  63. Buffers 2 items
  64. Calibration certificates 5 items
  65. Carbon films 3 items
  66. Circular 8 items
  67. Citifluor range 2 items
  68. Cleaning 7 items
  69. Critical dimension 2 items
  70. Cryo applications 5 items
  71. Cryo-Aprons 6 items
  72. Cryo Face Shield 1 item
  73. Cryo-Gaiters 2 items
  74. Cryo-Gloves 14 items
  75. Cryo-Kits 10 items
  76. Cryosectioning 1 item
  77. Desiccators 3 items
  78. Diffraction reference standards 2 items
  79. Dimpler 2 items
  80. Disc apertures 44 items
  81. Dishes 3 items
  82. EDX reference standards 10 items
  83. Electronic 6 items
  84. Embedding media 3 items
  85. Embedding moulds 11 items
  86. Embedding resin 3 items
  87. Epoxy resins 7 items
  88. FEI/Philips compuStage 1 item
  89. Finder grids 13 items
  90. Fixatives 7 items
  91. Formvar carbon films 3 items
  92. Formvar films 3 items
  93. Geller reference standards 4 items
  94. General purpose 1 item
  95. Hardeners 2 items
  96. High precision crossover 4 items
  97. High precision grade 9 items
  98. Holey carbon films 3 items
  99. Hotplates 2 items
  100. Identigrids 1 item
  101. Kits and other tools 3 items
  102. Labels 3 items
  103. Lacey carbon films 3 items
  104. Large diameter 2 items
  105. Light element support grids 1 item
  106. Magnification standards 5 items
  107. Magnification standards - certified 5 items
  108. Markers 2 items
  109. Maxtaform finder grids 3 items
  110. Medical grade 2 items
  111. Membrane boxes 3 items
  112. Micrometer 3 items
  113. Microtome blades 5 items
  114. Mounting compound 6 items
  115. Multi hole apertures 2 items
  116. Nuclepore filters 3 items
  117. Paints 9 items
  118. Pestle & mortar 2 items
  119. Pins & probes 8 items
  120. Polystyrene spheres 5 items
  121. Precision Wire Saw 3 items
  122. Processing chemicals 3 items
  123. Protective 6 items
  124. Punches 1 item
  125. Quantifoil 13 items
  126. Rectangular 10 items
  127. Resolution standards 18 items
  128. Resolution standards - certified 3 items
  129. Scalpels and blades 21 items
  130. Scribing and cleaving 5 items
  131. Spare targets 23 items
  132. Spray apertures 4 items
  133. Square 7 items
  134. Square holes 4 items
  135. Square mesh 2 items
  136. Staining accessories 8 items
  137. Staining jars 3 items
  138. Staining racks 1 item
  139. Staining trays 1 item
  140. Stainless steel discs 1 item
  141. Stains 13 items
  142. Syringes & pipettes 5 items
  143. Tabbed grids 1 item
  144. Tabs & discs 6 items
  145. Tantalum apertures 2 items
  146. Tapes 4 items
  147. Thin film apertures 2 items
  148. Top hat apertures 2 items
  149. Triple slot 1 item
  150. Tripod Polisher 4 items
  151. Tubes 3 items
  152. Tweezer kits 3 items
  153. Tweezers for stubs 3 items
  154. Ultra-smooth carbon foils 1 item
  155. Ultra-thin carbon films 1 item
  156. Vitrobot 5 items
  157. Wehnelt apertures 1 item
  158. Xray fluorescence standards 5 items
  159. Adventurer Series 2 items
  160. Explorer Series 3 items
  161. PR Series 2 items
  162. Loose resins 10 items
  163. Activated resins 7 items
  164. HIC resins 7 items
  165. IEX resins 18 items
  166. Magnetic resins 10 items
  167. SEC preparative resins 4 items
  168. Affinity resins 8 items
  169. Protein ladders 2 items
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