We use them in genetics. Either you can taste it or not. Sometimes we send a strip home so the students can test their parents or siblings. It tastes revolting and I buy it from Southern Biol I think. P.S. Can be very funny watching this prac.
Better still... I know that I am a non-taster so I will taste a bit and get nothing and then pass onto other people. The look on their faces when they taste the PTC after seeing me not having a reaction... priceless
I was asked by a new teacher to get some PTC paper for the genetics topic in yr 10. I didn't check RiskAssess before I bought some from a supplier who made no mention of the fact that they contain poison and are not recommended to be used in schools. Is anyone else still using these strips??