hollow-cathode lamp 1. work with AAS in labs 2. full elements in warehouse, quick delivery 3. 36 years production history. ... Stability: ≤+1% to -1% baseline drift of copper lamp within 30min <1%, baseline drift of other lamps within 5min ... absorption atomic spectrophotometers.Elements We Have in Warehouse Ag,Cd,Ga, Ge, Hg,In,Mo,Si, Sr, Te, Al ... +Cu+Ca+Mg+Fe high quality Hollow-cathode Lamp used in labs