Hermetically sealed NaI(Tl) scintillation crystals for gamma-ray detection and spectroscopy. Crystals are supplied in aluminum or stainless steel housings with K9 glass, quartz or sapphire optical windows. Standard cylindrical sizes run from 25.4 x 25.4 mm to 127 x 127 mm, with custom sizes up to 150 mm diameter x 400 mm height. Square, well-type and thin X-ray formats are also available. Send crystal size, housing and window requirements for a quotation.