There has been widespread confusion on the Net about the sensitivity of these tests. A telephone representative informs me (March 2005) that the tests do in fact measure 25 mIU. No Equate test has measured 100 mIU for 2+ years. She says they are "aware of misinformation on the Web" to this effect.

Complaints in the past about dark evaporation lines, but currently recommended.

Note: some tests were removed from their plastic cases for photographing/scanning purposes and lack the round/square windows.