Microplate Reader Applications and Troubleshooting Solutions

　　Microplate Reader Applications and Troubleshooting Solutions

　　I. Primary Applications

　　Enzyme-Linked Immunosorbent Assay (ELISA)

　　Detection of antigens and antibodies; screening for infectious diseases; analysis of hormones, tumor markers, allergens, etc.

　　Life Sciences Research

　　Protein quantification, cell proliferation assays, cytotoxicity testing, and enzyme activity determination.

　　Food and Agricultural Product Testing

　　Detection of antibiotic residues, veterinary drug residues, mycotoxins, and pesticide residues.

　　Veterinary Medicine, Disease Control, Water Quality, and Environmental Monitoring

　　Rapid quantitative and qualitative analysis of batch samples.

　　Clinical Diagnostics (Medical-Grade Microplate Readers)

　　Routine testing in hospital laboratories, health examination centers, and third-party medical laboratories. II. Common Issues and Solutions

　　1. Inaccurate Readings / Significant Value Fluctuations

　　Possible Causes:

　　Microplate placed unevenly; air bubbles present within wells

　　Inconsistent reaction times / temperatures

　　Dirty filters; dust in the optical path

　　Inaccurate sample pipetting; issues with reagents

　　Solutions:

　　Re-level the microplate; remove air bubbles from the wells

　　Standardize incubation times and temperatures

　　Clean the filters and the detection optical path

　　Ensure precise pipetting; check reagents for expiration/degradation

　　2. Poor Repeatability (High Variability within a Single Plate)

　　Possible Causes:

　　Instrument not sufficiently preheated or stabilized

　　Slow pipetting speed; inconsistent timing

　　Poor quality of the microplate

　　Optical path or filter anomalies

　　Solutions:

　　Allow the instrument to preheat for 10–15 minutes before testing

　　Increase pipetting speed to ensure simultaneous reactions

　　Replace with a certified, high-quality microplate

　　Calibrate the wavelength and filters

　　3. Startup Errors / Failed Self-Test

　　Possible Causes:

　　Unstable power supply; poor electrical contact

　　Filters not properly seated or damaged

　　Stuck mechanical moving parts

　　Internal sensor anomalies

　　Solutions:

　　Check power cords and outlets; restart the instrument

　　Open the instrument to verify correct filter installation

　　Check for foreign objects obstructing the mechanical arm

　　Contact the manufacturer for hardware inspection and repair

　　4. Failed PC Connection / Software Communication Failure

　　Possible Causes:

　　Loose USB / serial cable connection

　　Missing or incompatible device drivers

　　Incorrect communication port selection

　　Blocked by computer firewall / antivirus software

　　Solutions:

　　Reconnect the data cable; try a different port for testing

　　Install the correct drivers for the specific model

　　Select the correct COM port or USB port within the software

　　Disable the firewall and attempt to reconnect

　　5. Wavelength Errors / No Readings

　　Possible Causes:

　　Incorrect wavelength selection

　　Missing or damaged filters

　　Aged light source lamp

　　Solutions:

　　Verify the required wavelength against experimental protocols (commonly 450nm, 492nm, 630nm)

　　Check the filter model and positioning

　　Replace the light source lamp (Halogen / LED)

　　6. Printing / Data Export Error

　　Possible Causes:

　　Printer is offline

　　Incorrect format settings

　　Software parameters not configured

　　Solutions:

　　Check printer connection and paper supply

　　Reset output format settings

　　Restart the software and instrument

　　7. Key Points for Routine Maintenance (Can be directly included in after-sales documentation)

　　Maintain a dry and dust-free laboratory environment

　　Clean the sample compartment after each use

　　Periodically calibrate wavelength and repeatability

　　Avoid severe vibration

　　Power on the instrument periodically during periods of prolonged inactivity