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The Journal of Global HealthInternational Health JournalEvidence for health where it's hardest to deliver
Vol.
XXIV
No.
04
Year
2026
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Editorial Methodology

How We Grade Equipment for the Field, Not the Catalog

Global Health Equipment Review·Field Series·Evidence Desk·Peer-reviewed in spirit · Educational

Every review on International Health applies a single, published rubric — durability, portability, and field-suitability — weighted toward how a device behaves after a week on a dirt road and a failed generator, not how it reads on a spec sheet. This page sets out that method, the evidence we accept, the standards we anchor to, and the firewall between our editorial judgment and any commercial interest.

Read Our Field GuidesContact the Editors
Plate II
Fig. — field plate
Figure. Engraved reference plate — evaluating equipment on field resilience, not lab-bench ideals.
The Rubric

Durability, Portability, Field-Suitability — and Why the Order Matters

We assess every category — cold chain, field diagnostics, outbreak-response gear, WASH infrastructure — against three axes, scored independently and then reconciled.

Durability asks whether a device survives the journey and the season: ambient temperatures of 40–45°C, 90&percent; relative humidity, dust ingress, repeated freeze-thaw cycles, and the rough handling of multi-leg transport. We note IP ratings and operating-temperature envelopes where a manufacturer publishes them, but we treat those as claims to be tested against reported field behavior, not as conclusions.

Portability covers mass, packed volume, the realism of stated cold-life or battery autonomy, and whether a single health worker can carry and commission the unit without specialist tooling. A passive cool box that holds temperature for 72 hours only when pre-conditioned for six is graded on the realistic figure, not the headline one.

Field-suitability is the synthesis: can this device be deployed, used, repaired, and decommissioned by the people who will actually hold it, in the setting where it will actually be used? It is the axis we weight most heavily, because a technically superior device that needs a cold chain it cannot guarantee, or a reagent it cannot resupply, is — for our readers — the wrong device.

Plate II
Fig. — field plate
Figure. Engraved reference plate — evaluating equipment on field resilience, not lab-bench ideals.
Field-Suitability Over Catalog Specs

Why We Discount the Spec Sheet

A catalog optimizes for the procurement officer comparing rows in a spreadsheet. The field does not. We have seen WHO PQS-prequalified solar refrigerators perform exactly to specification — and others fail not on the compressor but on the door gasket, the controller firmware, or a service network that does not exist within 600 kilometres.

So when a stated specification and a credible field report disagree, the field report carries more weight in our scoring. Where a device's published performance depends on conditions a low-resource program cannot reliably reproduce — stable mains power, an unbroken cold chain for reagents, ambient temperatures below the regional norm — we say so explicitly and grade against the realistic operating envelope. This is editorial judgment, openly stated and open to correction, not a laboratory certification. We do not issue certifications, and we do not represent our grades as regulatory clearances.

Our field-equipment review method

How a Review Is Built

Each assessment follows the same sequence, so two devices in the same category are graded on comparable evidence rather than on whichever had the better brochure.

  1. 01Step

    Scope the use case

    We define the deployment context first — outbreak response, routine immunization, point-of-care diagnosis in a remote clinic — because field-suitability is meaningless without a setting. A device strong for a fixed health centre may be wrong for a mobile team.

  2. 02Step

    Map specifications to standards

    We record the manufacturer's published figures and check them against the relevant WHO PQS performance specifications and recognised international standards for the category. Standards references inform the assessment; they do not end it.

  3. 03Step

    Weigh field-failure evidence

    We gather documented field reports — program evaluations, logistician debriefs, peer-reviewed deployment studies — with particular attention to failure modes: where, why, and how often a device underperforms its catalog claim in real conditions.

  4. 04Step

    Score the three axes independently

    Durability, portability, and field-suitability are each graded on their own merits before reconciliation, so a strong score on one cannot quietly mask a disqualifying weakness on another.

  5. 05Step

    Reconcile, weighting field-suitability

    We synthesise the axes into an overall assessment in which field-suitability is the dominant factor, and we state plainly any condition under which our grade would change.

  6. 06Step

    Disclose, date, and open for correction

    Every review carries its evidence basis, the date of assessment, and an explicit invitation to challenge it. Equipment and supply chains change; an assessment is a snapshot, not a permanent verdict.

Method of review
Review criteriaBy which we judge field gear
01Criterion
3
Scoring axes applied to every device
02Criterion
4
Equipment pillars: cold chain, diagnostics, outbreak, WASH
03Criterion
100%
Reviews dated and open to documented correction
04Criterion
0
Paid placements, sponsored grades, or named endorsements
Standards of the desk
From the review desk

The rubric, broken into what we actually score

Each axis is graded independently before reconciliation, against concrete questions rather than a general impression. This is what a device is measured on, axis by axis.

  1. 01

    Durability — survives the journey and the season

    Behaviour at 40–45°C ambient and 90% relative humidity, dust ingress, repeated freeze-thaw, and rough multi-leg transport. We note published IP ratings and operating-temperature envelopes, but treat them as claims to test against reported field behaviour, not as conclusions.

  2. 02

    Portability — one worker can carry and commission it

    Mass, packed volume, the realism of stated cold-life or battery autonomy, and whether a single health worker can deploy the unit without specialist tooling. A 72-hour passive hold-over that assumes six hours of pre-conditioning is graded on the realistic figure, not the headline one.

  3. 03

    Field-suitability — the axis we weight most heavily

    Can this device be deployed, used, resupplied, repaired, and decommissioned by the people who will actually hold it, in the setting where it will actually be used? A technically superior device that needs a cold chain it cannot guarantee, or a reagent it cannot resupply, is the wrong device for our readers.

  4. 04

    Evidence basis — what the grade actually rests on

    Every score is tied to its sources: manufacturer specifications, WHO PQS performance specifications, recognised standards, peer-reviewed deployment studies, and documented field-failure reports. Thin evidence is marked provisional, and the date and basis of the assessment travel with the verdict.

Plate II
Fig. — field plate
Figure. Engraved reference plate — evaluating equipment on field resilience, not lab-bench ideals.
Independence

The Wall Between Editorial Judgment and Commercial Interest

International Health draws its grades from field evidence, not from commercial relationships. No manufacturer, distributor, or supplier pays for a review, influences a score, or receives advance approval over an assessment. We accept no per-placement fees and publish no sponsored rankings.

Where this site still carries older sourcing-advisory pages from a prior phase, those are kept separate from the editorial review apparatus and are not part of how equipment is graded. The editorial team does not act as a sales channel for any product it reviews, and a favourable assessment confers no commercial benefit on the reviewer. This standard is the operational arm of our wider publication-ethics statement; if that separation ever becomes unclear on a given page, treat it as an error to be reported and corrected under the policy below.

Who applies this method
ArticleField Series

Standards, anchored — and what they are not

These editorial standards govern how a device is graded. They sit alongside two companion policies that govern the integrity of the wider record. Our peer-review policy sets out how an assessment is independently scrutinised before it carries the journal's name; our publication ethics statement covers authorship, conflicts of interest, and the handling of allegations. Read together, the three describe a single discipline applied at three points in the process.

Our practice follows the spirit of widely-recognised publishing principles — the kind articulated in international guidance on research and publication integrity — without claiming formal membership of any standards body or accreditation we do not hold. Where we reference WHO PQS prequalification or a category-specific performance standard, we cite it by its published role and never imply a certification a device, or this publication, does not possess. The standard we ask readers to hold us to is the same one we apply to the equipment we grade: stated plainly, dated, and open to correction.

End of section
Correspondence

Queries to the desk

05 entries on file
Q1.What evidence do you accept, and what do you reject?

We accept manufacturer specifications, WHO PQS performance specifications, recognised international standards, peer-reviewed deployment studies, and documented field-failure reports from credible programs and logisticians. We reject undated anecdotes, marketing claims presented as test data, and any source we cannot characterise. Where evidence is thin, we say the assessment is provisional rather than implying a confidence we do not have.

Q2.How do WHO PQS and other standards factor into a grade?

Standards references — WHO PQS prequalification, category-specific performance standards — establish the baseline a device claims to meet and frame what we test it against. They inform the assessment but do not conclude it: a prequalified device can still fail on field-suitability, and we grade what the evidence shows in the relevant setting, not what the certificate alone implies. We reference standards by their published role and never fabricate or imply a certification a device does not hold.

Q3.Why is field-suitability weighted above catalog specifications?

Because our readers deploy in the settings catalogs do not model. A device's value to a field program is determined by whether it can be transported, commissioned, used, resupplied, and repaired in place — not by its peak performance under ideal conditions. When a spec and a credible field report conflict, the field report carries more weight. We make that weighting explicit on every review so the judgment can be examined and challenged.

Q4.How does this relate to your peer-review and ethics policies?

These standards define the rubric; the peer-review policy defines how a draft assessment is independently checked before publication; the publication-ethics statement defines the conduct expected of everyone who touches a review. A grade that fails any one of the three does not run. Together they are how an editorial judgment earns the journal's name rather than simply carrying it.

Q5.How are corrections handled?

Every assessment is dated and open to challenge. When a documented error of fact, a changed specification, or new field-failure evidence is brought to us, we re-examine the review, amend it if warranted, and append a dated correction note rather than silently editing the record. Substantive changes to a grade are flagged at the top of the affected review, and significant cases are handled under our corrections-and-retractions policy. Equipment and supply chains evolve; the correction log is how the record stays honest.

From the editorial desk

Found an error, or have field evidence we should see?

Our assessments are only as good as the evidence reaching us. If you can document a field failure, a changed specification, or a deployment outcome that contradicts a published grade, the editors want it. Corrections and field reports strengthen the whole record.

Contact the Editorial Team