Source Confirmed
Seller-described configuration
- Two 5601i Adult/Infant systems, laptops included, used condition, $104 final hammer, and three bidders.
Analysis snapshotSnapshot decision:REVIEW
Michigan Instruments 5600i + 5601i PneuView — Auction Analysis
Photos correct the seller's 2×5601i description to one 5600i plus one 5601i, but integrated mechanical, software, and calibration evidence still controls the decision.
Analysis snapshot · Historical — observed August 24, 2026. This retrospective reconstruction uses the documented final auction price and was not published before the auction closed.
Decision at a glance
RecommendationREVIEW
- Maximum hammer bid
- $0
The auction bid ceiling supported by this analysis, if one is defensible; see costs below for buyer-premium treatment.
Why this decision
The current-state model loses about $404 at the $104 hammer and produces a $0 blind ceiling. If both systems pass integrated mechanical, electronic, and software tests, the central conditional ceiling is about $200.
What to verify before bidding
- Power-on alone does not establish a functioning PneuView system.
See costs and maximum bid for the displayed assumptions and buyer-premium treatment.
- Final auction price
- $104
- Bidders
- 3
- Blind-model resale
- $1,000
Snapshot provenance and timing · observed August 24, 2026 · scheduled close August 24, 2026
GSA Auctions sale 3-1-QSC-I-26-537, lot 057 · Des Moines, Iowa
Snapshot observed August 24, 2026
Scheduled close August 24, 2026
Analysis prepared August 24, 2026
Published August 24, 2026 · page updated August 25, 2026
Prepared and published by Oleksii Udod for LotCaliper.
Continue after this auction
This auction snapshot is historical. Continue with related research, or review a relevant published analysis whose recorded scheduled close has not passed.
No related published analysis currently has a future scheduled close.
Auction snapshot
This GSA Auctions lot was described as two Michigan Instruments 5601i Adult/Infant test-lung systems with laptops. It closed at $104 with three bidders. The equipment is used, parts may be missing, and functionality and calibration require verification.
Seller inventory and photo evidence can differ; reconciling them improves configuration accuracy, while condition and calibration still determine the economics.
Review and correction history
Independent review not recorded for this legacy analysis. No corrections recorded.
View review and correction details
Independent review not recorded
Published before the current independent-review gate; no completed independent review is recorded.
How independent review worksHow evidence is classified
Seller facts, photo-derived observations, manufacturer context, unknowns, and LotCaliper assumptions remain explicitly separated.
Photo Derived
Photo-normalized configuration
- One Dual Adult unit consistent with 5600i and one Adult/Infant unit consistent with 5601i.
- Two laptops, interfaces, accessories, manuals, cases, and substantial physical completeness.
Not Established
Not established
- Laptop boot health, PneuView software, interface communication, leakage, measurement accuracy, or current calibration.
Lotcaliper Assumption
LotCaliper assumptions
- $900–1,100 current-state resale, $1,600–1,900 tested-working resale, $0 blind ceiling, and ~$200 central conditional ceiling.
Equipment identity
Respiratory Test · quantity 1
Michigan Instruments 5600i Dual Adult PneuView
Identity confidence: High
Identity evidence
Photo label reads Dual Adult TTL, supporting a 5600i-family identification rather than the seller's second 5601i.
GSA Auctions · Image · observed August 24, 2026
Respiratory Test · quantity 1
Michigan Instruments 5601i Adult/Infant PneuView
Identity confidence: High
Identity evidence
Photo label reads Adult/Infant TTL, supporting the 5601i-family identification.
GSA Auctions · Image · observed August 24, 2026
Official manual supports the integrated PneuView software and mechanical/electronic calibration context.
Michigan Instruments · Text · observed August 24, 2026
View official reference
Configuration
Seller-described configuration: 2× 5601i Adult/Infant systems
Confirmed · High confidence
Configuration evidence
Seller-written inventory, preserved as the source claim.
GSA Auctions · Source Field · observed August 24, 2026
Photo-normalized configuration: 1× 5600i + 1× 5601i
Confirmed · High confidence
Configuration evidence
Neutral photo-derived correction based on visible product labels.
GSA Auctions · Image · observed August 24, 2026
Two laptops, interface hardware, resistance/compliance accessories, manuals, and cases
Confirmed · High confidence
Configuration evidence
Photo-derived physical-completeness observation.
GSA Auctions · Image · observed August 24, 2026
Condition
Untested
Used; parts may be missing, and functionality and calibration should be verified.
Evidence confidence: High
Condition evidence
GSA condition statement, paraphrased.
GSA Auctions · Source Field · observed August 24, 2026
Market evidence
Market evidence strength
Medium
Public auditability
Limited Legacy
Evidence recency
Not Recorded
No structured comparable-evidence metadata was preserved for this dated snapshot. Public auditability is limited; the numeric resale snapshot cannot be independently audited from comparable records on this page.
Legacy evidence counts were not preserved. Unknown is not reported as zero.
Sensitivity and robustness
Requires Verification
The scenarios show potentially workable economics, but the stated verification gate must be resolved before bidding responsibly.
Visually complete, currently unverified
- Max hammer
- $0
- Gross resale model
- $900–$1,100
The blind model is negative at the actual $104 hammer.
Both systems demonstrated working
- Max hammer
- $200
- Gross resale model
- $1,600–$1,900
Central ceiling ~$200; working sensitivity is ~$110–365.
Costs and maximum bid
| Transaction / operating cost | Amount | Basis |
|---|---|---|
| Selling Fees | $150 | LotCaliper assumption: 15% of modeled conservative resale proceeds. |
| Shipping | $350 | LotCaliper pickup, packing, and inbound-logistics reserve; not a GSA or carrier quote. |
| Testing Repair Reserve | $200 | LotCaliper cleaning, diagnostics, and functional-verification reserve. |
| Risk Buffer | $600 | LotCaliper reserve for software, calibration, interface communication, mechanical leakage, and repair risk. |
- Buyer premium
- Not modeled
- Return requirements
- $500 minimum profit · 30% minimum ROI
- Computed bid constraints
Profit floor: $0
ROI floor: $0
Binding: Profit and ROI floors
- Snapshot blind/as-is max hammer
- $0
- Modeled result at recorded bid
- -$404 profit · -32.22% modeled ROI
This is a reseller ceiling, not a prediction of the auction's closing price. Any buyer premium or other unquoted acquisition charge must be deducted before bidding.
Seller-description correction
The seller description appears inaccurate. Photo evidence indicates one 5600i Dual Adult system and one 5601i Adult/Infant system. LotCaliper normalizes the configuration without treating the discrepancy as misconduct.
The laptops may preserve PneuView software, drivers, and instrument-specific configuration. They should not be wiped or reimaged before inspection, and no software-license transferability is assumed.
Blind and tested-working economics
At $1,000 gross resale, $150 selling cost, $1,150 non-acquisition burden, and the $104 hammer, the blind model loses about $404. The blind ceiling is $0.
At the central $1,700 tested-working resale, the $104 hammer produces about $591 modeled profit and 69% ROI.
| Pair gross resale | Conditional safe max hammer |
|---|---|
| $1,600 | ~$110 |
| $1,700 | ~$195 (shown as ~$200 central) |
| $1,800 | ~$280 |
| $1,900 | ~$365 |
What qualifies as working?
A simple power-on is insufficient. The valuable evidence is that each mechanical lung, electronic interface, and PneuView software environment operates together.
- Each original laptop boots and the software recognizes the correct instrument.
- Pressure and flow channels zero; bellows do not show significant leakage; compliance and resistance controls work.
- Manufacturer-style leak/volume checks pass and any calibration/service history is recorded.
Recommendation and rationale
Snapshot decision
REVIEWThe current-state model loses about $404 at the $104 hammer and produces a $0 blind ceiling. If both systems pass integrated mechanical, electronic, and software tests, the central conditional ceiling is about $200.
Confidence
- Identity
- High
- Configuration
- High
- Condition
- Low
- Market Support
- Medium
- Costs
- Medium
Market support assesses how well the available evidence supports the resale assumption. Exact third-party marketplace records may be omitted when source-use rights are unclear. Each dimension uses the published methodology rubric; a confidence label measures the strength and boundedness of its evidence, not the likelihood of a profitable outcome.
Risks and unknowns
High · Integrated Test Not Verified
Power-on alone does not establish a functioning PneuView system.
The mechanical lung, electronic interface, laptop software, leakage, and calibration state must work together.
Sources
View cited public sources
- GSA Auctions API / Data.gov
Official provenance for the auction facts. The supplied research record did not contain a verified direct item URL, so none is invented here.
- Michigan Instruments 5601i manual
Official technical and calibration context; linked and paraphrased without reproducing manual content.