Tryptic Soy Agar (TSA) w/Lecithin & Tween® P34 Hardy Diagnostics Tryptic Soy Agar (TSA) w/ Lecithin & Tween® 15 x 60 mm plates for finger-tip and surface monitoring 60mm 10 per pack Additional shipping will apply to all cold shipments. This charge will be added after checkout.