Type 1250 Sodium Flame Photometer   Specification and Services. Purpose To measure the concentration of a standard Na.Cl. aerosol both before and after it has passed through an air filtration device. Sensitivity. Better than 10ng/m³ giving a minimum detectable penetration of less than 0,0005%. With a challenge aerosol of 13mg/m³. Maximum Concentration. Continuous indication of mass concentrations up to 13mg/m³, but for short periods up to 20mg/m³ if calibrated to this level. Sample Flow Rate 2 l / min +/- 0.1 l / min Gas Supply. Hydrogen 0.6 l / m @ 2 bar. [when compressed gas cylinders are used a suitable 2-stage regulator is required with the maximum out put pressure of 5 bar.] Air Supply. Minimum flow 50 l/min @ 5 bar. Electrical Power. 110 to 264 Vac. 40 to 400 Hz. Single Phase. Dimensions. 0,58m long x 0,5m high x 0,29m deep. Weight. 24 Kgs. Finish. Case : - GRP colour Mid Grey. Front Panel :- Semi-Gloss White.