• Biotechnology and Bioprocess Engineering:BBE
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• v.9 no.2
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• pp.127-131
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• 2004

A low-cost, simple strip reader system using a linear movement mechanism of CD-ROM deck has been developed to characterize a lateral flow membrane-based immunochromatographic assay. The test strip reader was assembled by a CD-ROM deck and home-made optical head especially designed for immunoassays. The optical head for detecting reflected light from the test strip surface consists of green light-emitting diode, large area silicon photodiode, and anodized aluminum mounting block providing a slit structure for cutting light from the LED. The stepping motor of the deck was operated in the full step mode, whose distance of each reading point is about 0.15mm. The performance of the strip reader was tested by analysis of HBV(hepatitis B virus) antigen test kit. This strip reader can be useful for inexpensive, disposable, and membrane-based assays that provide visual evidence of the presence of an analyte in a liquid sample.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.52-58
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• 2014

Point of care testing (POCT) is could be easily and economically performed and was widely used. In particular, the test items using immune chromatographic method has been conveniently used. But when an error occurs, we should reaffirmed the test results, but we could not reaffirm because the test line is disappeared as the time pass, and the test results are different between laboratory workers. Therefore, we developed multi-strip reader which can store images for the test results and can interpretate the test results automatically. Then we evaluated newly developed multi-strip reader for urine pregnancy test, the test results of the multi-strip reader was 100% matched with the previously results. Our newly developed multi-strip reader was convenient and economic, and will be widely used in many laboratories.

• Analytical Science and Technology
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• v.25 no.6
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• pp.388-394
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• 2012

Cyanobacterial toxins, microcystins which exist in Korean lakes show strong toxicity to fish, cattles and human. In this study, we tried to analyze cyanobacterial toxin, microcystin in the Microcystis cultivation solution using test strip, although the most common analytical methods for the detection of microcystin are HPLC and ELISA. This new anlytical method used the advantages of high specifisity and rapidness of test strip, high sensitivity of fluorescence reader. Therefore, we could analyze the trace amount of microcystin existed in various water samples without using the microcystin standards.