Science Buddies: "Ask an Expert"

hello, good night! how can I test a prototype imunocromático without using antigens and antibodies only proving that happens a color change in the presence of elements that react? There is a chromogen which reacts only in the presence of two chemical elements? Thanksss !

Please ask questions in only ONE thread so they are all together and we can keep track of what has been asked and answered.

It is not clear what you you are doing or why. Please take time and explain about your project and how these questions are related to it.

Thanks.

Sybee