Flame Photometer LD-LFP-A10 ✓ Testing Elements : K, Na ✓ No of Channels : 2 ✓ Display Value : Optical Power Flame Photometer LD-LFP-A11 ✓ Testing Elements : K, Na ✓ No of Channels : 2 ✓ Display Value : Concentration value Flame Photometer LD-LFP-A20 ✓ Testing Elements : K, Na, Li ✓ No of Channels : 3 ✓ Display Value : Concentration value Flame Photometer LD-LFP-A21 ✓ Testing Elements : K, Na, Ca ✓ No of Channels : 3 ✓ Display Value : Concentration value Flame Photometer LD-LFP-A30 ✓ Testing Elements : K, Na, Li, Ca ✓ No of Channels : 4 ✓ Display Value : Concentration value Flame Photometer LD-LFP-A40 ✓ Testing Elements : K, Na, Li, Ca, Ba ✓ No of Channels : 5 ✓ Display Value : Concentration value