Reagent bottles, also known as media bottles or graduated bottles, are containers made of PTFE (Teflon), and topped by PTFE caps and are intended to contain chemicals in liquid or powder form for laboratories and stored in cabinets or on shelves. Appropriate for most chemicals and solvents, the show requisite inertness, and are acid and alkali resistant. PTFE bottles are chemically inert, non-contaminating, and are thermally stable in the range of -200°C (390°F) to + 280°C (+536°F). The bottles also have a “super smooth” finish making it virtually impossible for anything to “stick” to the surface of these fine laboratory products.

The bottles are isostatically moulded from pure virgin PTFE resulting in a highly inert material, with very heavy wall construction, one that could stand up to nearly everything one might want to put into them. The super smooth internal finish means that virtually nothing really sticks to it. The base is precision machined for good heat transfer on a hot plate. The screw cap houses a PTFE encapsulated “O” ring seal for total leak-free performance. In addition, there are  mini-hand grips also for ease of handling.


Part No Capacity Stem Dia x Length Total Height
25115 125 ml 10 x 70 mm 260 mm
25116 250 ml 11 x 70 mm 290 mm
25117 500 ml 12 x 70 mm 330 mm
25118 1000 ml 12 x 70 mm 400 mm
25119 1500 ml 12 x 80 mm 455 mm
25120 2000 ml 14 x 85 mm 480 mm

PTFE / Teflon Separating Funnel Key Features

  1. Resistant to high temperatures and virtually all laboratory chemicals, including strong acids, strong alkalis, aqua regia and organic solvents
  2. Machine-finished surface for easy cleaning, and pure white appearance and  to eliminate contamination and ease cleaning
  3. Compatible with cryo temperatures to moderate heating -196°C to 250°C (-321 to 482°F)