The Insomniacs

Hanna Instruments Marine Master Waterproof Wireless Multiparameter Photometer - HI97115UC

Colorimeter, Multiparameter

YSI 556-02 Multiparameter Meter with Barometer

Smar Medical M6 4.3 inch Portable Veterinary Multiparameter Monitor with SPO2, ECG,NIBP, Temp, RESP and PR for Dogs, Cats and Horses etc., Grey

Hanna HI2040 Multiparameter DO Meter

Apera Instruments SX751 pH/ORP/DO/Conductivity/TDS/Salinity/Resistivity/Portable Handheld Multiparameter Meter Kit, Silver

Myron L Company 6PIIFCE Multiparameter Meter

Multiparameter Semiautomatic Polarimeter with Optical Rotation Specific Rotation Concentration International Sugar Scale +/- 90 Degree 100mm 200mm Tube USB Interface