pH meter — portable 0–14pH

pH meter — stationary laboratory

pH meter — industrial (for process)

pH electrode — glass (standard)

pH electrode — industrial (PTFE, titanglass)

Conductivity meter (electrical conductivity) — portable

Conductivity meter — stationary

TDS meter (dissolved solids) — portable

ORP meter (redox potential)

Dissolved Oxygen (DO) meter — portable

Dissolved Oxygen — stationary

Turbidimeter (turbidity) — portable NTU

Turbidimeter — stationary

Refractometer — mechanical (sugar, salt, alcohol)

Refractometer — digital (Brix 0–32%)

Refractometer — industrial (inline)

Spectrophotometer — UV/VIS 200–1000nm

Spectrophotometer — color measurement (colorimeter)

Spectrophotometer — portable (handheld NIR)

Color analyzer (colorimeter) — L*a*b* system