Pregnancy test
device · 1977 · Digital age
An immunochromatographic strip.
What it is made of
- Absorbent sample pad — has part. It receives the sample.
- Test strip membrane — has part. The liquid moves by capillary action.
- Test and control lines on a strip — has part. Antibodies colour the lines.
Principles and materials it uses
- Antibodies — uses. Immunochromatography.
- Plastic — is made of. The case is plastic.
- Cellulose — is made of. The strip is a nitrocellulose membrane.
- Capillary action — uses. Capillary flow of the liquid.
History: what it evolved from and what it influenced
- Rapid test — evolved into. The same strip technology.