The standard Conductivity Probe (CON-BTA) has a body made of ABS plastic. The temperature element itself is housed in a stainless steel tube. The sensing element is tin and copper portions in a graphite base.

The Go Direct® Conductivity Probe (GDX-CON) also has a body of ABS plastic. The temperature element itself is housed in a stainless steel tube. The sensing element is tin and copper portions in a graphite base.

The Platinum-Cell Conductivity Probe (CONPT-BTA) has an epoxy body. The sensing element is housed in a glass tube.

Cole-Parmer has an excellent website for determining if your chemicals are compatible with these materials: https://www.coleparmer.com/Chemical-Resistance