MEDICAL AND DENTAL EQUIPMENT ; FUNCTION: HQ4100# PORTABLE OXIMETER; APPLICATION: METER, DISSOLVED OXYGEN ; ADDITIONAL FEATURE:# 1) PRODUCT SPECIFIC; 2) OPERATING CONDITION: 0-60°C; COMMERCIAL REFERENCE #: HACH HX0001-08531 ;, NOTE: 1) CAN MEASURE PH/TEMPERATURE ; 2)# CONDUCTIVITY/TDS ; 3) SALINITY AND SELECTIVE IONS; DOES NOT ACCEPT SIMILAR