0.01 - 10 ml/min - pistons connected in series
0.05 - 50 ml/min - pistons in parallel connection
0,01 - 10 ml/min - pistons connected in series
0,02 - 15 ml/min, built in unit with external controlling
0,01 - 10 ml/min ternary low pressure gradient
0.05 - 50 ml/min - pump heads in parallel