Introduction to PTFE labware:
The SPI Supplies® Brand of PTFE labware is molded, depending on the specific product, with PTFE (polytetrafluoroethylene) manufactured by DuPont, 3M Company (Dyneon®), or Asahi Chemical (Fluon®). Several different brands of PTFE are used and we have found that all three brands work well in the labware application. Please note that all of our products are manufactured from pure PTFE with FDA approval.
PTFE is ideally suited for the labware application because of its legendary resistance to just about anything including strong acids and bases. It is also resistant to steam and has a temperature range of use covering the range of -200°C (-390°F) to +300°C (+570°F). Because of the three dimensional structure of PTFE at the molecular level, it is essentially intractable in any solvent, therefore explaining its unique resistance to dissolution in most solvents or strong acids and bases. The helical structure of the polymer chain, which is literally "sheathed" by the F atoms means that more chemically vulnerable carbon-carbon bonds of the chain are fully protected.
Because of the very high purity of the PTFE starting material all products exhibit extremely low levels of extractables, even at elevated temperatures. The legendary non-stick properties of PTFE give it yet additional advantages for use in the laboratory.
Who among us has not, at one time in our lives, dropped a glass beaker or flask, with the resulting flooding of the work area with potentially dangerous liquids? When a piece of PTFE labware is dropped, it won't break. This does not mean that there won't be a flood of some liquid, but it does remove from the equation flying shard of broken glass. We believe that the resistance to breakage is a greatly understated advantage, even for those working with liquids that don't strictly speaking, require the intertness of PTFE.
Use in materials science laboratories:
Just about any laboratory could be a potential user of PTFE labware but it has been our own experience that the strongest acids and bases, etching chemicals and other hazardous items are generally found in materials science laboratories as well as the electronics industry.
|Beakers||Beaker covers/Watch glasses||Beakers, Thermotech™ (heatable on hotplate)||Bottles|
|Centrifuges Tubes / Test Tubes||Crucibles||Dippers||Dropping bottles|
|Round bottom flasks||Scoop||Test tube racks||Tweezers|