הרב שלמה מילר שליט”א
Harav Shlomo Miller Shlita disagrees that Murex Techeiles is valid Techeiles. Among other points, he argues that, in theory, the test described in the Gemara cannot work on this Techeiles.
The periodical “Halacha Berura” published a scathing attack against Murex Techeiles. Of note is that beneath the title it states: “Reviewed by Horav Shlomo Miller”, whereas nearly all previous and subsequent editions were reviewed by Harav Yisroel Belsky – a strong supporter of Murex Techeiles.