SDI Diagnostics
Bacterial / Viral Filter AstraGuard
PRODUCT HIGHLIGHTS
- 99.9% Bacterial/Viral Efficiency – Meets high standards for infection prevention
- Woven Filter Media – Offers reliable, consistent performance
- Low Airflow Resistance – Enables accurate spirometry results
- Disposable Design – Single-use to prevent contamination
Fast Delivery
Auto Delivery , Free Shipping For $100 Above Products
| Item | Description | Quantity | Price |
|---|---|---|---|
|
29-7990-100
|
FILTER, ASTRAGUARD PULMONARY In stock, ships from your local warehouse |
Box of 100 |
List Price:$360.99 Price:$349.99 You save $11.00 |
|
29-7990-050
|
FILTER, ASTRAGUARD MOUTHPIECE F/SPIROMETER In Network - ships to arrive in 2-5 business days |
Box of 50 |
List Price:$258.99 Price:$250.99 You save $8.00 |

Description
AstraGuard Bacterial/Viral Filter – Trusted Protection for Pulmonary Testing
The AstraGuard Bacterial/Viral Filter by SDI Diagnostics is engineered for maximum infection control during spirometry and pulmonary function tests (PFTs). Designed with a high-efficiency woven filter, AstraGuard provides 99.9% bacterial and viral filtration efficiency, minimizing the risk of cross-contamination between patients and clinicians.
Available in two models—with or without a pre-attached mouthpiece—these filters are disposable, single-patient use, and feature low airflow resistance to ensure accurate test results and patient comfort. The oval-shaped mouthpiece (on select models) is designed to be comfortable and non-intimidating, especially for pediatric or anxious patients.
✅ Key Features
-
99.9% Bacterial/Viral Efficiency – Meets high standards for infection prevention
-
Woven Filter Media – Offers reliable, consistent performance
-
Low Airflow Resistance – Enables accurate spirometry results
-
Disposable Design – Single-use to prevent contamination
-
Comfortable Fit – Small, oval mouthpiece on select models for improved patient experience
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Non-threatening Size – Ideal for pediatric and adult patients alike
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Ready-to-use – Some versions include an integrated mouthpiece for convenience
📦 Product Comparison
| Model | With Mouthpiece | For Use With | Features |
|---|---|---|---|
| 29-7990-100 | Yes | Pulmonary Function Test | Woven filter, oval mouthpiece, high efficiency |
| 29-7990-050 | No | Pulmonary Function Test | Woven filter, standard inlet, disposable |
📝 Product Specifications
| Specification | Details |
|---|---|
| Manufacturer # | 29-7990-100 / 29-7990-050 |
| Brand | AstraGuard™ |
| Manufacturer | SDI Diagnostics |
| Country of Origin | United States |
| Application | Bacterial / Viral Filter |
| Use | Pulmonary Function Testing |
| Filtration Efficiency | 99.9% BFE and VFE |
| Resistance | Low Resistance to Air Flow |
| Mouthpiece | Included (29-7990-100 only), Oval shape |
| Sterility | Non-Sterile |
| Usage | Disposable, Single-Patient Use |
| UNSPSC Code | 42272219 |