Trans® Precise Portable Cond./TDS/Sal./Temp. Meter, “HC9021”, 0~1999㎲199.9mS/999ppm/100.0ppt/120℃ with Large LCD Multiple Display, IP65 Water Proof, Real Time 99 Data Memory, 휴대용 정밀 전도도 / TDS / 염도 미터 (S19025110190401)