Description
The PulmoGuard C Filters are built for a specific installed base: Astra, Welch Allyn and Collins equipment. SDI positions the line as its alternative to the Collins DC2 filter, with the same 99.999 percent cross contamination efficiency as the rest of the family. Five configurations run from filter only packs to kits with Comfit mouthpieces and Kushion Klip noseclips.
About These PFT Filters
Pulmonary function testing on Collins and Welch Allyn equipment needs a filter shaped for those instruments, and that is the job this line is sized for. The pleated media delivers 99.999 percent cross contamination efficiency while meeting ATS air resistance standards. Dead space is 69 ml, a documented figure labs can enter into their circuit calculations. The housing is transparent for a full visual inspection and compact enough to keep the patient side of the circuit unintimidating. Like the rest of the family, the fitting suits the named instruments with no adapter.
Features and Benefits
Instrument Fit
- Made for three platforms – Sized for Astra, Welch Allyn and Collins equipment, and offered as the alternative to the Collins DC2
- No adapter needed – The fitting seats directly, so setup stays a single step
Filtration Performance
- 99.999 percent efficiency – Cross contamination efficiency matches the standard set by the wider filter family
- 69 ml dead space – A published dead space figure lets the lab account for the filter in its measurements
- Pleated media – Pleating supports high efficiency at low resistance, with ATS air resistance standards met
Product Specifications
Filter Details
- Cross Contamination Efficiency: 99.999 percent
- Dead Space: 69 ml
- Media: Pleated
- Housing: Transparent for visual inspection
- Designed For: Astra, Welch Allyn and Collins equipment
- Alternative To: Collins DC2
- Country of Origin: Made in the USA
Configuration Details
- Filter Only: 29-3104 in 50 and 100 quantities
- With Comfit Mouthpiece: 29-3104C in 100 quantity
- With Kushion Klip and Comfit: 29-3104CK in 50 and 100 quantities
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Why Choose the PulmoGuard C Filters?
Collins and Welch Allyn labs do not have to source their filters from the instrument maker. This line gives them a manufacturer documented alternative with published efficiency and dead space figures.
- Platform specific fit – sized for the three named equipment lines rather than adapted to them
- Published numbers – efficiency and dead space are stated figures a lab can file, a differentiator over unspecified generics
- Complete kits – Comfit and Kushion Klip configurations cover the whole patient setup from one box
- Inspection ready – the transparent housing supports a by eye media check before use
Frequently Asked Questions
Which instruments do these filters fit?
SDI designs them for Astra, Welch Allyn and Collins equipment, and offers the line as its alternative to the Collins DC2 filter.
What is the dead space?
Dead space is 69 ml, and cross contamination efficiency is 99.999 percent with ATS air resistance standards met.
What do the kit configurations add?
The C configurations add a Comfit disposable mouthpiece, and the CK configurations add both the Comfit mouthpiece and a Kushion Klip noseclip.
Do they need an adapter?
No. The fitting is designed to seat on the named instruments with no adapter.
Is this the genuine SDI product?
Yes. These are genuine SDI Diagnostics filters under the 29-3104 part numbers shown in the specifications, made in the USA.
