In all the years that we have been offering new filaments, including some under the SPI name, we have almost never been asked to take back filaments because the performance of the filaments was below the customer's expectations. In addition, the quality of the cleaning of the wehnelt cap when changing a filament can be, at least in some instruments, the single most critical factor affecting filament life times. Retipped Filaments SPI is also able to save our customer large amounts of money by retipping used filaments. Despite the fact that there are numerous different electron microscope models, and different geometries to the filament bases, we have organized the selection process to make it easy to determine the cost of retipping any particular style of filament. These filaments are fully annealed, precision aligned and strain-free.
Microscopic inspection assures consistent quality and performance.
New Filaments, both new and retipped, come 10 to a box and are easy to see and retrieve from the special protective packaging. However, before retipping, the base is sandblasted and other wise cleaned and returned almost to its clean and pristine condition as when it was new. Filaments shipped in special container at extra cost if one is not supplied by customer. Return ten boxes and you will received one free box retipped and returned to you freight prepaid any where in the world. We reserve the right to limit this after to keep our over stock in balance.