Automated ELISA Processing System

What is the Automated ELISA Processing System?

An automated ELISA processing system performs sample and reagent pipetting, incubation, washing, substrate addition and reading without operator intervention. It suits hospital and reference laboratories processing several hundred to several thousand wells per day with many different kit protocols.

Overview

The system integrates a pipetting robot, one or more incubation chambers, a plate washer and a reader, all controlled by software that holds the assay protocols. Plates are moved by a robotic arm or track, samples are transferred from tubes into plates with disposable tips or a fixed probe, and reagents are added from cooled positions. Walkaway time depends on the number of incubation steps and can reach several hours, but the sample volume of serum or plasma needed is small, typically 10 to 50 microliters per well. Traceability features include positive sample identification, reagent lot capture, control position verification and an audit trail. Because several kits may run in parallel, the software validates protocol compatibility, temperature and timing before starting a run, and it reports results as concentrations, cut-off indices or qualitative interpretations.

How does it work?

Enzyme-linked immunosorbent assay uses a plastic microplate whose wells carry a bound capture antibody or antigen. Sample is added, and any target present binds to the solid phase during incubation. After washing, a detection antibody conjugated to an enzyme such as horseradish peroxidase or alkaline phosphatase is added and binds to the captured target. A further wash removes unbound conjugate, then a substrate is added and the enzyme converts it into a coloured product. The reaction is stopped with acid or base and the absorbance is read at a defined wavelength, usually 450 nanometers with a reference wavelength between 600 and 650 nanometers. Absorbance is proportional to the amount of bound analyte, and a calibration curve, often four-parameter logistic, converts readings into concentrations or index values. Strict washing, incubation timing and temperature control determine the reliability of the result.

What are the key features?

• Robotic pipetting with disposable tips or fixed probes
• Integrated incubation chambers, washer and reader
• Walkaway operation of several hours for long protocols
• Positive sample identification with reagent lot traceability
• Protocol compatibility checks before a run starts
• Audit trail with operator and reagent data

What are the technical specifications?

A typical automated elisa processing system configuration offers throughput of Up to 400–1200 wells/h depending on protocol, incubation chambers of 2–4 chambers, 25–50 °C ±0.5 °C, sample volume of 10–50 µL per well, sample positions of 60–180 tube positions with barcode, reagent positions of Up to 40 cooled positions at 4–10 °C and plate capacity of 10–40 plates onboard. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Automated ELISA Processing System is used in hospital infectious disease serology at volume, blood donor screening laboratories, autoimmune and allergy panels and reference laboratories running many kit protocols. Across the wider ELISA Systems class, laboratories also deploy it for infectious disease serology, allergy specific IgE testing and autoimmune antibody screening.

Which standards and certifications apply?

Relevant standards and methods include ISO 15189, CLSI EP05, CLSI I/LA20, CLSI M29, IEC 61010-1 and IEC 61010-2-101. Certification candidates for this model are CE, ISO 13485 manufacturing and NMPA class II registration; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the reader and washer on a level bench away from vibration and direct light, and keep the plate carrier and optical window free of dust. Verify performance at installation with a reference dye plate for optical accuracy and with controls for each assay. Daily tasks include checking the washer manifold for blockage, priming the wash lines and running controls at two or three levels. Plates should be read immediately after stopping the reaction, since colour continues to develop and delays bias results, and consistent timing across the plate matters more than absolute speed. Replace tubing and manifold pins when flow becomes uneven, and dispose of wash waste and plates as biohazardous material.

How do I select the right Automated ELISA Processing System?

Specify an automated processor when daily volume exceeds about five hundred wells, when many protocols run in parallel, or when traceability and walkaway operation are required. In the RFQ state the number of kits and their incubation requirements, the plate throughput for your most demanding protocol, sample and reagent position counts, and whether the software can manage kit lot changes without reprogramming.

How does it compare with other ELISA Systems variants?

Define the assays first, then decide how much automation is appropriate. Laboratories running fewer than one hundred wells per day can work with a reader and washer plus manual pipetting, while larger volumes justify an automated processor with plate handling, incubation and reporting. Compare readers by wavelength range, filter set, linearity, and whether they support kinetic and dual-wavelength measurement. For washers, check residual volume, the number of wash cycles programmable, and the manifolds for 96-well and strip formats. For automated systems, check plate capacity, walkaway time, whether the software handles assay protocols centrally, and the traceability of each step with lot numbers and operator identification. Confirm the assay registration status in your market, since ELISA kits are regulated separately from the instruments.