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Equipping the haematology bench in a Bangladeshi hospital laboratory

By Vvon Engineering Team | Published | Updated

Plan analysers, centrifuge configurations, microscopy, reagents and specimen handling from the haematology service’s test menu and quality requirements.

Medical equipment RFQ checklist (TXT)

A haematology bench needs reliable results, controlled specimen handling and turnaround suited to the clinical service. Select the analyser, microscopy and backup arrangements together with quality control, reagent continuity and trained staff.

Size the bench against the real workload

Define the test menu with the laboratory and clinical teams, including expected volume, urgent samples, differential counts and referral arrangements. The appropriate bench depends on those needs rather than the hospital’s label alone.

Model peak specimen arrivals as well as daily totals using the laboratory’s own pattern. Include urgent work, repeat analysis and reporting deadlines.

Three part or five part differential

Three-part and five-part differential analysers provide different levels of white-cell classification. Compare the exact reportable parameters, flagging, throughput and review workflow of the offered models. Purchase price, reagent cost and maintenance must be evaluated for the anticipated test mix.

Provide competent microscopy and a defined manual-review or referral process for the haematology service. Analyser flags and automated differentials do not replace the laboratory’s approved review criteria.

Ask about reagent packaging as well as price. A pack sized for a high throughput laboratory has an open stability period that a low volume laboratory cannot use up, so you pay for reagent that goes down the drain. On a small workload, smaller packs at a higher unit price are frequently cheaper in practice.

Centrifuges, and why the haematocrit one is separate

Check the intended centrifugation tasks against the available, manufacturer-approved rotors and adapters. Capillary haematocrit work needs a suitable validated configuration; a general tube rotor cannot be assumed to accept capillaries safely. Confirm the configuration and specifications of any proposed GEMMY model.

A documented downtime plan may include selected manual tests, another validated analyser or referral. Manual haemoglobin or packed-cell-volume measurement provides limited information and does not reproduce a complete blood count. The laboratory should define which results may be issued and how clinicians are informed.

For serum, urine sediment or washing steps, select the validated tube and rotor configuration for each method. Confirm the current GEMMY model’s available rotors, RCF, containment and safety functions rather than assuming a generic universal centrifuge covers every preparation.

Microscopy, staining and the sink

Provide suitable space, microscopy, stains, lighting and chemical handling for film preparation and examination. These should be part of the service’s equipment and quality plan.

Define specimen age, storage, mixing and smear preparation through the validated method and collection-tube instructions. Provide suitable ventilation and segregated disposal for staining chemicals. Store and maintain microscopes according to their instructions, including humidity control where needed; inspection determines whether contaminated optics can be serviced.

Laying the bench out so work moves one way

Lay out specimen receipt, analysis, microscopy and reporting to minimise mix-ups and unnecessary movement. Support the route with patient identifiers and documented checks; a one-way bench layout by itself does not establish specimen traceability.

Mix anticoagulated specimens according to the tube and analyser instructions. A compatible mixer can support the workflow where appropriate, but its action and timing need validation; it should not be assumed to correct an unsuitable or clotted sample.

For coagulation testing, define the collection, centrifugation and analysis requirements separately from the CBC process. Use clear identification and sufficient workspace to meet the validated timing and preparation requirements; physical separation depends on the layout and risk assessment.

What actually breaks, in the order it breaks

Track reagent storage conditions, lot changes and opened-container expiry, together with calibrator and control availability. Compare the supply plan and waste from low-volume testing before selecting an analyser.

Use service records and manufacturer maintenance guidance to identify likely points for inspection, such as fluid paths, seals, filters and optical or mechanical checks relevant to the actual model. Do not substitute a generic fault list for the device’s service procedure.

Assign responsibilities between trained operators, biomedical engineering and the authorised service provider. Trend quality-control and downtime records so recurrent issues receive investigation rather than being attributed automatically to operators or engineering.

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