These are the required barriettes for the Ndd Pro and Pro Lab PFT Machines. This is a box of 50.

These are the FRC Barriettes for use with the Ndd Pro Lab Spirometer. They are indiividually wrapped, and The Price of $122 is for a box of 40. If you click on quantity, you can see the price for 80.

This is a box of 50 Spiro Filters and Spirette Adapters designed to be used with the Ndd Easy-On and Easy One Spirometers. This filter does not fit the NDD AIR or Ndd Pro or Pro Lab spirometers and PFT's. These filters are recommended by Ndd for bacteria and Viral Filtration. You simply place the adapter on the bottom of the Spirette and insert the larger end of the filter into the adapter(see Photo). Each Filter is individually wrapped, and the Spirette Adapters come in a bag of 50.

• Disposable: Single-patient test/session use
• 99.999% Bacterial filtration efficiency
• 99.99% Viral filtration efficiency
• Low dead space: 45 mL
• VBMax Standard PFT Filters include a paper mouthpiece
• 50 Filters per case and 50 Spirette Adapters
• Exceeds ATS/ERS Guidelines

This is a box of 50 Spiro Filters and Flowtube Adapters designed to be used with the Ndd Easy-On AIR Spirometers only. The adapters will not fit any other spirette, only the Air Flowtube. These filters are recommended by Ndd for bacteria and Viral Filtration. You simply place the adapter on the bottom of the spirette and insert the larger end of the filter into the adapter(see Photo). Each Filter is individually-wrapped, and the Flowtube Adapters come in a bag of 50.

• Disposable: Single-patient test/session use
• 99.999% Bacterial filtration efficiency
• 99.99% Viral filtration efficiency
• Low dead space: 45 mL
• VBMax Standard PFT Filters include a paper mouthpiece
• 50 Filters per case and 50 FlowTube Adapters
• Exceeds ATS/ERS Guidelines

These are the required barriettes for the Ndd Pro and Pro Lab PFT Machines. They come in quantities of 100.

This is a box of 200 Flowtubes for the Ndd Air Spirometer, a dispenser pack that holds 50 is included.  These tubes will not fit any other Ndd Spirometer except the AIR Model. If you need spirettes, please don't order these FlowTubes. They look similar to spirettes but they are a different shape. This product ships for free!

This is a box of individually-wrapped spirettes for all Ndd Spirometers Except the New Air Spirometer. There is a dispensor box of 50 and 150 loose spirettes in this case. This qualifies for free shipping!