Description
The Calibration Syringe, 3 Liter is the volume standard a spirometry program reaches for before the first patient of the day. A calibration check against a known 3 liter volume is the routine that keeps every result that follows defensible. It is offered on its own or with the adapter that fits it to Astra spirometers.
About This Syringe
Spirometry standards call for regular volume verification, and a precision 3 liter syringe is the tool that performs it. The operator delivers the full stroke through the spirometer flow sensor and compares the measured volume against the known standard. Done daily, the check catches sensor drift, leaks and damage before they can reach a patient result. This syringe is built by SDI in the USA as part of its spirometry line, so it pairs naturally with the Astra family of spirometers. Offices running other instruments can use the standard syringe, while Astra users can choose the configuration that includes the fitted adapter.
Features and Benefits
Calibration Role
- Known 3 liter volume – A fixed, verified volume gives the spirometer a true reference for its accuracy check
- Daily QC habit – A quick stroke through the sensor each morning documents that the system read correctly that day
- Drift detection – Repeated checks surface slow sensor drift while it is still small enough to correct
Configuration Choice
- Standard syringe – The syringe alone suits offices that already have the connection their instrument needs
- Astra adapter included – The kitted configuration adds the adapter SDI fits for its Astra spirometers
Product Specifications
Syringe Details
- Volume: 3 liters
- Use: Spirometer volume accuracy verification
- Country of Origin: Made in the USA
Configuration Details
- Option 29-5030: 3 liter syringe only
- Option 29-5034: 3 liter syringe with Astra adapter
- Packaging: Each
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Why Choose the Calibration Syringe, 3 Liter?
A spirometry result is only as credible as the last accuracy check behind it. This syringe makes that check a one minute routine instead of a project, which is why it ends up living next to the spirometer.
- Defensible results – documented daily verification supports the accuracy claims your reports make
- Catches problems early – a failed check points at the sensor before a day of patient testing is wasted
- Maker matched – the adapter configuration is fitted by the same manufacturer that builds the Astra spirometers, a fit differentiator over generic syringes
- One tool, every day – a single durable standard covers the whole verification routine
Frequently Asked Questions
What is a calibration syringe used for?
It delivers a known 3 liter volume through the spirometer sensor so the office can verify that measured volume matches the standard before patient testing.
How often should the check be run?
Spirometry quality programs run a volume verification daily on testing days, and the syringe stroke takes about a minute to perform and record.
Which configuration fits an Astra spirometer?
Choose the configuration with the Astra adapter, part 29-5034. The syringe alone, part 29-5030, suits offices that already have their connection.
Does it work with other spirometer brands?
A 3 liter syringe is the standard verification volume across spirometry, and the standard configuration is the one to choose for non Astra instruments.
Is this the genuine SDI product?
Yes. This listing covers genuine SDI Diagnostics syringes under manufacturer part numbers 29-5030 and 29-5034, made in the USA.
