How to Choose an Auto Chemistry Analyzer: Buyer's Guide

The chemistry analyzer is one of the highest-volume instruments in a routine laboratory. It processes liver, kidney, lipid, glucose and enzyme panels day after day, and it is often a major source of laboratory revenue. Choose the wrong model — too slow for your workload, too costly to run, or hard to integrate — and you will feel the effects for years.

This guide is written for lab managers, clinic owners, distributors and IVD importers who want a practical, spec-by-spec method for comparing auto chemistry analyzers. We end with a checklist you can use when evaluating any supplier, including ours.

Why the Chemistry Analyzer Matters for Lab Revenue & Turnaround

A chemistry analyzer directly influences two numbers that matter to any lab: turnaround time and cost per test.

• Turnaround time. Throughput determines how many patient samples you can process in a morning. If your analyzer is slower than your sample intake, results queue up and physicians wait.
• Cost per test. Reagent consumption, washing efficiency and calibration frequency all shape your running cost. A slightly cheaper instrument that wastes reagent will cost more over its lifetime.
• Revenue. In most labs, chemistry is the highest-volume routine discipline. Uptime and reliability protect that revenue stream.

This is why buyers should compare instruments on objective specifications rather than brand impressions alone.

Key Specs to Compare

Throughput (Tests per Hour)

Throughput is the headline number: how many photometric tests the analyzer completes in one hour. Bench-top instruments commonly range from around 100 to several hundred tests per hour, while floor-standing systems can reach far higher volumes.

Be careful when comparing: some manufacturers quote maximum throughput under ideal conditions. Estimate your own workload — samples per day, tests per sample — and check whether the analyzer can clear your peak morning load within your target turnaround.

Sample & Reaction Volume

Reaction volume is the total liquid in the reaction cuvette. Smaller volumes mean less reagent consumed per test, which lowers cost per test — but they also demand precise pipetting.

Sample volume matters for pediatric and geriatric patients, where small blood draws are common. An analyzer that works with small sample volumes is more practical for these populations.

Cuvette Washing System

Cuvettes can be washed and reused or used once. Washing quality affects carryover — the risk that a previous sample contaminates the next result. A structured, multi-step wash cycle (for example, a 7-step 2-stage washing process) reduces that risk between tests.

For labs that run many different assays, washing efficiency is one of the most practical reliability factors you can compare.

Reagent Channels & On-Board Reagent Positions

Reagent channels determine how many different tests you can run in one sequence. The number of on-board reagent positions defines how many reagents the analyzer holds at once, which affects how often you reload during the day.

If the manufacturer does not publish these numbers, ask for them — along with the types of reagents the system accepts.

Open vs Closed Reagent Systems

• Open systems accept reagents from different manufacturers, giving you freedom to source reagents competitively.
• Closed systems are designed to work with the manufacturer's own reagents, which can simplify quality control but ties you to one supplier.

There is no universal right answer: open systems offer flexibility, closed systems offer consistency. Confirm which model applies to the analyzer you are evaluating and calculate reagent cost accordingly.

LIS Connectivity

A laboratory information system (LIS) connection lets results transfer automatically, eliminating manual transcription errors. Bi-directional LIS support — where the analyzer receives orders and sends results — is the capability most labs want today. Check which interface standards the analyzer supports and whether the supplier helps with integration.

Benchtop vs Floor-Standing for Low-/Mid-Volume Labs

For low- and mid-volume laboratories — clinics, small hospitals, private labs — a bench-top analyzer is usually the more practical choice:

• Space. No dedicated floor footprint; it fits on a counter.
• Installation. Simpler setup in an existing room.
• Workload fit. Bench-top systems commonly cover a few hundred tests per hour, which matches the demand of most small and mid-size labs.
• Lower entry cost. Typically a smaller initial investment than a floor-standing system.

Floor-standing systems make sense when daily volume is high and the lab expects sustained growth. If your lab runs a few hundred tests per day, a capable bench-top unit will usually serve you at lower cost and complexity.

How the Chemi 200 Addresses These Priorities

Biolinkcare's Chemi 200 is a mini fully-auto bench-top chemistry analyzer. Here is how it maps to the criteria above:

• Throughput: 200 tests per hour — a realistic match for low- and mid-volume workloads.
• Reaction volume: 150 μL — a compact reaction volume that helps control reagent consumption per test.
• Cuvette washing: 7-step 2-stage — a structured multi-step wash designed to reduce carryover between samples.
• Form factor: bench-top — suits laboratories where floor space is limited.
• Fully automatic operation reduces hands-on time for operators.

Other specifications — such as on-board reagent positions, sample tray capacity and the supported test menu — should be confirmed with the manufacturer for your specific application.

Checklist for Distributors Buying for Resale

If you are a distributor or IVD importer evaluating a chemistry analyzer to resell, add these points to your evaluation:

• Documentation. Request the technical specification sheet, user manual and installation requirements before committing.
• Registration support. Ask what documents the supplier provides to support your local registration or tender.
• Spare parts & service. Confirm the spare parts list, expected service intervals and how the supplier supports overseas service.
• Training. Check what operator training materials are available in your language.
• Sample evaluation. Where possible, evaluate a sample unit in your own environment before placing a volume order.
• Reagent strategy. Confirm whether the instrument works with open reagents or is tied to a closed system, and model your margin accordingly.

A checklist forces suppliers to be specific — and specific answers protect your margin later.

About Biolinkcare

Biolinkcare Limited is a Hong Kong-based in-vitro diagnostics (IVD) company focused on analyzers, reagent production solutions and laboratory consumables. Its product line includes the Chemi 200 mini fully-auto bench-top chemistry analyzer (200 tests per hour), the Hemato 50 five-part auto hematology analyzer, the Hemato 30 three-part auto hematology analyzer, the Smartlyte 80 electrolyte analyzer and the Uniflow 100 immunofluorescence analyzer for point-of-care testing. Biolinkcare also supports IVD reagent production with industrial water purification systems, mixing, cleaning-in-place, tank room planning and packing stations, and supplies plastic disposable consumables including reagent bottles, freezing tubes, centrifuge tubes, extraction tubes, drop bottles, pipette tips, PCR/ELISA plates and cubitainers. The company shares production technology to help partners set up local reagent manufacturing and expand their business globally.

Contact us at info@biolinkcare.com or WhatsApp +86 157 1198 1557 for a quotation and product catalog. Visit www.biolinkcare.com.