Lead Shields for Instruments Lead Shields for Instruments LS038 – Lead Shield for SDA38 Sodium Iodide Detector The LS038 is manufactured to fit over the 1.5″ x 1.5″ NaI(Tl) detector (SDA38). More Information LS2000 – Lead Shield for SP78W Sodium Iodide Well Detector The LS2000 is manufactured to fit over the NaI(Tl) well detector (SD78W). More Information