Welcome To The Boston Shatnez Laboratory.
On this site you can learn all about Shatnez testing and its guidelines, including what items need testing, Shatnez Laws, and arrange for Shatnez testing. You can also find a list of clothing brands that have been found to contain Shatnez.
What is Shatnez?
The Torah teaches about the power of combinations and warns us against mixing the wrong things together. One of these prohibitions concerns wearing or deriving warmth from a mixture of wool and linen, as it is written, "You shall not wear combined fibers, wool and linen together" (Deut. 22:11). In Hebrew this forbidden mixture is called Shatnez. The mitzvah (commandment) of Shatnez is as important a mitzvah as “Do not steal,” or “Love your friend as you love yourself”.