意大利哈納HI4421微電腦溶解氧測定儀量程:溶氧(DO):0.00 to 90.00 mg/L(ppm),飽和溶氧:0.0 to 600.0 %,大氣壓:450 to 850 mmHg;560 to 1133 mmHg;多項測量指標:溶解氧D.O,飽和溶解氧,生化耗氧量BOD,耗氧速率或攝氧率OUR.