Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.
Air 1000 mL/L Gas, 340 l — NDC 55037-302-06 (Billing 55037-0302-06)
by Matheson Tri-Gas, Inc. · 340 L in 1 CYLINDER
This is a package of 340 l of Air 1000 mL/L Gas from Matheson Tri-Gas, Inc., marketed since Jan 1987 and currently FDA-listed.
NDC 55037-0302-06
🏷️ FDA NDC (as labeled)
55037-302-06
billing pads the product segment with a zero
This package
Contains340 l
Pack sizes20 compare ↓
Product page 55037-0302-01
Also comes in:
27 l 55037-302-01
90 l 55037-302-02
130 l 55037-302-03
150 l 55037-302-04
200 l 55037-302-05
450 l 55037-302-07
510 l 55037-302-08
550 l 55037-302-09
1300 l 55037-302-10
1800 l 55037-302-11
2500 l 55037-302-12
2700 l 55037-302-13
3400 l 55037-302-14
5000 l 55037-302-15
5500 l 55037-302-16
5600 l 55037-302-17
6700 l 55037-302-19
6900 l 55037-302-18
7300 l 55037-302-20
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
FDA NDC (as labeled)
55037-302-06
Product NDC
55037-302
11-digit billing NDC
55037030206
UNII
K21NZZ5Y0B
Application #
NDA205890
SPL Set ID
7a1f1e42-e2cf-4545-b82b-85cf491d779d
DEA schedule
Non-controlled
Marketing category
NDA
Marketing status
On market
FDA listing status
Listed (active directory)
Marketing start
1987-01-01
Route
RESPIRATORY (INHALATION)
Dosage form
GAS
Substance
AIR
Why two NDCs?
The FDA registers this code as 55037-302-06 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 55037-0302-06. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
Clinical
📗 Our plain-language guide HelloPharmacist
- It is used during an ultrasound exam called sonohysterosalpingography. It helps your doctor see whether your fallopian tubes are open. It is used when infertility is known or suspe...
- No. A healthcare professional mixes the foam and places it into your uterus through a thin catheter during the exam. They infuse it slowly to keep you comfortable.
- Some women have pelvic or belly pain, nausea, faintness or light spotting afterward. Call your doctor if the pain is severe or you have signs of infection.
- No. It must not be used in pregnancy. You will need a negative pregnancy test within 24 hours before the exam, and the exam is timed for the first half of your cycle.
Patient education
Supplement & herbal interactions
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
💬 Questions about Air?
Ask a pharmacist →
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per each | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
ℹ️
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · refreshed Oct 3, 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 55037-0302-01 55037-302-01 Main listing | 27 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-02 55037-302-02 | 90 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-03 55037-302-03 | 130 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-04 55037-302-04 | 150 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-05 55037-302-05 | 200 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-06 You're viewing this | 340 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-07 55037-302-07 | 450 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-08 55037-302-08 | 510 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-09 55037-302-09 | 550 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-10 55037-302-10 | 1300 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-11 55037-302-11 | 1800 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-12 55037-302-12 | 2500 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-13 55037-302-13 | 2700 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-14 55037-302-14 | 3400 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-15 55037-302-15 | 5000 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-16 55037-302-16 | 5500 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-17 55037-302-17 | 5600 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-18 55037-302-18 | 6900 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-19 55037-302-19 | 6700 L in 1 CYLINDER | 1987-01-01 | — | Active |
| 55037-0302-20 55037-302-20 | 7300 L in 1 CYLINDER | 1987-01-01 | — | Active |
You're viewing one of 20 pack sizes for this product.
Pack size FAQ
What quantity is in this package?
This package contains 340 l — 340 l in 1 cylinder.
How does this package differ from NDC 55037-0302-01?
Both are Air 1000 mL/L Gas — the drug itself is identical. This page's package is the 340 l one, while NDC 55037-0302-01 is the 27 l package.
What NDC number is used to bill for this package of Air 1000 mL/L Gas?
Use the 11-digit billing form listed in the identifiers section of this page. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Air 1000 mL/L 10736-0200-01 | MEDICAL-TECHNICAL | 346 l | — | — | FDA listed | — |
| Air 1000 mL/L 58632-0003-01 | GIBBS | 708 l | — | — | FDA listed | — |
| Air 1000 mL/L 59579-0006-01 | Linde | 14272 l | — | — | FDA listed | — |
| Air 1000 mL/L 34057-0006-01 | Oxarc, | 622 l | — | — | FDA listed | — |
| Air 1000 mL/L 49575-0004-01 | Machine | 408 l | — | — | FDA listed | — |
| Air 1000 mL/L 62273-0003-01 | Metro | 690 l | — | — | FDA listed | — |
| Air 1000 mL/Lthis 55037-0302-06 | Matheson | 340 l | — | — | FDA listed | — |
| Air 1000 mL/L 12213-0700-13 | NexAir, | 399 l | — | — | FDA listed | — |
| Air 1000 mL/L 44076-0020-01 | American | 6145 l | — | — | FDA listed | — |
| Air 1000 mL/L 50554-0007-01 | DuPuy | 708 l | — | — | FDA listed | — |
| Air 1000 mL/L 52085-0004-01 | Analgesic | 3030 l | — | — | FDA listed | — |
About this product: this is the brand-name version. We did not find an FDA-approved generic match for this exact strength, form and route.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Oct 3, 2026
- CMS NADAC weekly file
Availability & generic status
🏛️
1987
On the market since
Jan 1987
📍
2026
Currently FDA-listed
39 years listed
🔒
·
No generic listed yet
brand only
ℹ️No FDA-approved generic found
We did not find an FDA-approved generic match for this exact strength, form and route.
Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.
- FDA Orange Book · refreshed Oct 3, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
A current SPL was checked, but it does not contain a structured or narrative inactive-ingredient list for this product. This does not mean the product has no inactive ingredients.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.
Manufacturer & labeler
LabelerMatheson Tri-Gas, Inc.
FDA applicationNDA205890 (NDA)
Labeler code55037
First marketedJan 1987
Product typeHuman Prescription Drug
Portfolio27 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
📄 Package Label / Principal Display Panel ▾
AIR, COMPRESSED UN1002 MEDICAL AIR USP DO NOT REMOVE THIS PRODUCT LABEL. CONTENTS: LTRS. CU.
FT. Rx only. WARNING: Administration of Medical Air may be hazardous or contraindicated.
For use only by or under the supervision of a licensed practitioner who is experienced in the use and administration of Medical Air and is familiar with the indications, effects, dosages, methods, and frequency and duration of administration, and with the hazards, contraindications and side effects, and the precautions to be taken. WARNING: CONTAINS GAS UNDER PRESSURE; MAY EXPLODE IF HEATED. SUPPORTS COMBUSTION.
Do not handle until all safety precautions have been read and understood. Use a back flow preventive device in the piping. Close valve after each use and when empty.
Use only with equipment rated for cylinder pressure. Do not open valve until connected to equipment prepared for use. Protect from sunlight when ambient temperature exceeds 52 C (125 F).
Read and follow the Matheson Tri-Gas Safety Data Sheet (SDS) before use. Return with 25 psig. CAS 132259-10-0 MATHESON The Gas Professionals MATHESON TRI-GAS 909 LAKE CAROLYN PKWY.
SUITE 1300 IRVING, TEXAS 75039 1-800-416-2505 air tgm204-1124
AIR, COMPRESSED UN1002 MEDICAL AIR, USP DO NOT REMOVE THIS PRODUCT LABEL. CONTENTS: LTRS: CU. FT.
Rx only. WARNING: Administration of Medical Air may be hazardous or contraindicated. For use only by or under the supervision of a licensed practitioner who is experienced in the use and administration of Medical Air and is familiar with the indications, effects, dosages, methods, and frequency and duration of administration, and with the hazards, contraindications and side effects, and the precautions to be taken.
WARNING: CONTAINS GAS UNDER PRESSURE; MAY EXPLODE IF HEATED. SUPPORTS COMBUSTION. Do not handle until all safety precautions have been read and understood.
Use a back flow preventive device in the piping. Close valve after each use and when empty. Use only with equipment rated for cylinder pressure.
Do not open valve until connected to equipment prepared for use. Protect from sunlight when ambient temperature exceeds 52 C (125 F). Read and follow the Matheson Tri-Gas Safety Data Sheet (SDS) before use.
Return with 25 psig. CAS 132259-10-0 MATHESON The Gas Professionals MATHESON TRI-GAS 909 LAKE CAROLYN PKWY. SUITE 1300 IRVING, TEXAS 75039 1-800-416-2505 air tgm204C-1124
No label section mentions that — try another word, or open the full label on DailyMed below.
Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA.
Prefer the government’s original formatting? View this label on DailyMed ↗
About this NDC listing & data coverage
Finished prescription product
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available. |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope. |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.
Questions about this listing
Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Matheson Tri-Gas, Inc.. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 19 other package presentations of this same product, including 27 l (55037-0302-01), 90 l (55037-0302-02), 130 l (55037-0302-03). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Matheson Tri-Gas, Inc. is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
For educational and professional reference only — not medical advice. Pricing reflects published
NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.