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.
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 it unique resistance to
dissolution in most solvents or strong acids and bases. And because of the
helical structure of the polymer chain, which is literally "sheathed" by the
F atoms, the more chemically vulnerable carbon-carbon bonds of the chain are
fully protected.
And as if this was not enough, because of the very high purity of the
PTFE
starting material, the lab ware products carrying the SPI Supplies Brand
name are of very high purity and the products all exhibit extremely low
levels of extractables, even at elevated temperatures. And 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.
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.
Watch this part of our website as it is expanded in the future to include an
even large family of
PTFE labware products. If you need something that is
not yet "clickable",
contact us and tell us what you need;
we might have some pre-production samples to offer to you at a special price.