512M5 DS Conductivity Meter: 0-5000 micromhos/microsiemens by Myron L

EP DS Conductivity/Resistivity Meter: 0-0.5, 5, 50, 500, 5000 micromhos/microsiemens, 2-30 megohms by Myron L

512T10 DS TDS Meter: 0-10,000 ppm by Myron L

512T10NACL DS TDS Meter: 0-10,000 ppm, Calibrated to NACl by Myron L

532T2 DS TDS Meter: 0-25, 250, 2500 ppm by Myron L

532T1 DS TDS Meter: 0-50, 500, 5000 ppm by Myron L

512T5 DS TDS Meter: 0-5000 ppm by Myron L

512T5NACL DS TDS Meter: 0-5000 ppm, Calibrated to NACl by Myron L

C-1001 Filming Amines Comparator - Round by CHEMetrics

C-1006 Flat Filming Amine Comparator (Rose Bengal) by CHEMetrics

PCE-ATP 1-KIT3 Food / Hygiene ATP Testing Meter Kit for Surfaces and Water with 3.7V / 2300mAh Li-ion Battery by PCE Instruments

PCE-ATP 1-KIT2 Food / Hygiene ATP Testing Meter Kit for Water with 3.7V / 2300mAh Li-ion Battery by PCE Instruments

C-4610 Formaldehyde Comparator - Flat by CHEMetrics

C-4601 Formaldehyde Comparator - Round by CHEMetrics

C-4815 Glycol Comparator - Flat by CHEMetrics

HM-900 Handheld Oil in Water Meter by Walchem

K-6901A HR CHEMETS Kit, Nitrate 0-210 ppm by CHEMetrics

C-5005 Hydrazine Comparator - Round by CHEMetrics

C-5015D Hydrazine Comparator - Round (0-12.5 ppm) by CHEMetrics

C-5015C Hydrazine Comparator - Round (0-500 ppm) by CHEMetrics

C-5501 Hydrogen Peroxide Comparator (Ferric Thiocyanate) - Round by CHEMetrics

C-5510 Hydrogen Peroxide Comparator - Flat by CHEMetrics

C-5502 Hydrogen Peroxide Comparator - Round by CHEMetrics

I-5543 Hydrogen Peroxide Verification Kit by CHEMetrics

PH-80 HydroTester by HM Digital